大学英语四级阅读从句
大学英语四级阅读真题长难句型分析
引导语：下面我就给大家带来大学英语四级阅读真题长难句型分析，谢谢您的阅读，祝您阅读愉快。
长难句一
Although some of the more ambitious programs require new investments in servers and networks to support collaborative software, most distance learning courses can run on existing or minimally upgraded ( 升级) systems. (07.12 Passage 1)
分析主干：courses can run (on...)
Although 引导让步状语从句。investment in...表示“在......方面的投资”。不定式to support... 是宾语investment 的补足语，“项目需要投资来支持相关软件”(因为)support 的逻辑主语不是programs 而是investment，所以该不定式应该是补语，而非目的状语)。译文：虽然一些规模更大的课程需要斥资增加新的服务器、扩建网络来支持配套的软件，但大部分远程教育课程可以在现有的或稍加升级的系统上运行。
长难句二
While many good and useful claims are being made, it is clear there is a long way to go in ensuring shoppers are adequately informed about the environmental impact of the procts they buy. (05.6 Passage 2)
分析主干：it is clear that...
句首的While 引导让步状语从句，“尽管”......。it is clear......中，it 是形式主语，省略连接词that 的从句there is...才是句子的真正主语。in ensuring...是there be 句型的状语成分，“在确保......方面”。ensuring 后面接的是省略that 的宾语从句。
译文：虽然有许多好而有用的声明，但是，很明显，要确保购买者完全知晓所购产品对环境的影响还需要很长的时间。
长难句三
They only come in when a friend drops dead on the golf course and they think, "Geez, if it could happen to him,..."(08.12 Passage 1)
主干：They only come in
1.when引导时间状语从句，而且引导两个并列的从句：a friend drops dead...以及they think...。引号中的是直接引语，作think的宾语。
2.本句在理解上的一个难点是，they think究竟是与they come in并列还是与a friend drops dead并列。从语言形式上看，两种理解都可以;但从语义逻辑上看，应该是“他们只有在想到...的时候才来”，把they think归到时间状语从句中更合理。
译文：只有当一位朋友在高尔夫球场猝死时，他们才来看医生。他们会想到：“哎呀，如果这样的事能发生在他身上，...”
长难句四
Sometimes, when I was pushed into an argument on left brain versus (相对于) right brain, or nature versus nurture (培育), I would instantly fight fiercely on my behalf and all womankind. (07.6 Passage 1)
分析主干：I would fight...
when 引导时间状语从句。本句理解上的难点不在语法结构，而在语言本身所表达的'内容。was pushed into...表明作者不是主动参与这类争论的。an argument on...“在......方面的争论”。on my behalf “代表我自己，为我自己。”
译文：有时候，当我与别人争论左脑与右脑的问题，或者是先天天赋与后天培育的问题时，我会马上站在我的立场以及所有女性同胞的立场上给予狠狠的反驳遥。
长难句五
As the words begin to flow, the ideas will come out from the shadows and let themselves be captured on your notepad or your screen. (07.6 Passage 2)
分析主干：the ideas will come out and let themselves be captured...
句首的as 引导时间状语从句。主句部分是复合谓语，有两个由and 连接的并列谓语。
译文：随着话语开始流淌，思想也会逐渐明朗化，使自己呈现在你的笔记本或者屏幕上。
长难句六
While she awaits the outcome, the government has granted her permission to work here and she has returned to her job at Ben & Jerry‘s. (06.6 Passage 2)
分析主干：the government has granted her permission and she has returned to...
While 引导时间状语从句。本句主句是由and 连接两个分句构成的并列句，两个分句都用了现在完成时，与状语从句的一般现在时对照来看，表明主句中的两个动作都是在await 期间完成。grant 后面接了双宾语，间接宾语是her，直接宾语是permission。
译文：在她等待结果出来期间，政府给予她在美国的工作许可，她已经返回到她在Ben & Jerry 冰激凌连锁店的工作岗位。
长难句七
Because I know very little about farm animals who use tools or angels who go to first grade, I had to accept the fact that I was co-opting (借用) my daughter‘s experience. (07.12 Passage 2)
分析主干：I had to accept the fact...
Because 引导原因状语从句。该从句用了know little about...结构，about 有两个宾语。that 引导的从句是即farm animals 和angels，中间用or 连接，两个名词分别都有定语从句加以修饰。主句部分fact 带有that 引导的同位语从句。
译文：因为我对会使用工具的家畜和上一年级的天使一无所知，所以我得承认这样的事实：我在借用我女儿的经验。
长难句八
The I SO labeling standards ban vague or misleading claims on proct packaging, because terms such as “environmentally friendly”and “non-polluting”cannot be verified. (05.6 Passage 2)
分析主干：院The standards ban claims本句只含一个原因状语从句，结构上较为简单。值得注意的是，句中的名词词组大多含有修饰成分，如：The ISO labeling standards, claims on proct packaging, terms such as...。
译文：ISO 标识标准禁止在商品的包装上出现模糊的或会引起误导的产品说明，因为我们无法证明类似“环保”、“无污染”等这样的字样。
长难句九
While the kinds of instruction offered in these programs will differ, distance learning usually signifies a course in which the instructors post syllabi (课程大纲), reading assignments, and scheles on Websites, and students send in their assignments by e-mail. (07.12 Passage 1)
分析主干：distance learning signifies a course
1.句首While 引导状语从句，有让步、对比之意。
2.in which 引导定语从句修饰a course，该从句本身是and 连接两个分句构成的并列结构，两个分句分别讲到有关老师和学生的情况。post... on Websites 结构中，post 含有3 个宾语。
译文：虽然网络课程提供的教学形式会各不相同，但远程学习通常都表现为这样一种课程：教师将课程大纲、阅读作业及课程进度安排在网站上公布，学生通过电子邮件提交作业。
长难句十
While you need to employ both to get to a finished result, they cannot work in parallel no matter how much we might like to think so. (07.6 Passage 2)
分析主干：they cannot work...
While 引导让步状语从句，“尽管......”。从句中的employ 表示“采用”，不定式to get...作目的状语。work in parallel“并行不悖地起作用”。no matter how 也引导让步状语从句，表示“无论多么......”。
译文“尽管要完成定稿这两种思维都不可或缺，可是它们却不能并行着参与写作过程-----无论我们多么认为原本如此。
长难句十一
Even people who have a physical disease or handicap (缺陷) may be "well,"in this new sense, if they make an effort to maintain the best possible health they can in the face of their physical limitations. (06.12 Passage 2)
分析主干:people may be "well"
主句的主语people 有一个who 引导的定语从句修饰。if 引导条件状语从句，从句中的they can 是省略形式的定语从句(相当于they can maintain)，修饰health。
译文：在这种新的意义上来说，甚至有生理疾患或缺陷的人也是“健康的”，如果他们在面对身体缺陷时尽力去达到可能的最好健康状况的话。
长难句十二
Even people who have a physical disease or handicap (缺陷) may be "well,"in this new sense, if they make an effort to maintain the best possible health they can in the face of their physical limitations. (06.12 Passage 2)
分析主干:people may be "well"
主句的主语people 有一个who 引导的定语从句修饰。if 引导条件状语从句，从句中的they can 是省略形式的定语从句(相当于they can maintain)，修饰health。
译文：在这种新的意义上来说，甚至有生理疾患或缺陷的人也是“健康的”，如果他们在面对身体缺陷时尽力去达到可能的最好健康状况的话。
长难句十三
Most likely, you will believe that this will take more time than you actually have and you will end up staring blankly at the page as the deadline draws near. (07.6 Passage 2)
分析主干：you will believe that... and you will end up staring...
本句主句是and 连接两个分句构成的并列句。前一个分句中，that 引导的从句作believe 的宾语，该宾语从句中又包含一个由than 引导的比较状语从句。后一个分句中，谓语部分是end up doing 结构，staring...作主语补足语。
译文：你很有可能会以为这样加工整理素材会让你时间不够用，结果是最后随着交稿日期的逐渐临近，你将只是盯着稿件发呆。
长难句十四
Organized by the New York-based nonprofit Earth Pledge, the show inspired many top designers to work with sustainable fabrics for the first time. (09.6 Passage 1)
分析主干：the show inspired designers
本句是简单句。过去分词短语Organized by...在句中作状语，用以补充说明主语的背景信息。谓语部分用了inspire sb. to do 结构，不定式短语to work with...是宾语补足语。
译文：这次时装秀由总部位于纽约的非盈利组织Earth Pledge 主办，激发了许多顶尖设计师第一次使用不破坏生态平衡的布料设计时装。
长难句十五
This week Wal-Mart is set to announce a major initiative aimed at helping cotton farmers go organic: it will buy transitional (过渡型的) cotton at higher prices, thus helping to expand the supply of a key sustainable material. (09.6 Passage 1)
分析主干：Wal-Mart is set to announce a (major) initiative: it will buy (transitional)cotton...
1.本句冒号后的内容是对前文initiative 的详细阐述，相当于一个同位语从句。
2.冒号前的分句中，谓语动词用了be set to do 结构，过去分词短语aimed to...是initiatives 的后置定语，相当于一个定语从句。
3.冒号后的分句中，结构简单，其中helping to...是现在分词短语，作谓语动词buy 的状语，表示目的。
译文：本周沃尔玛超市准备出台一项重大举措，目的在于帮助棉农种植有机棉：沃尔玛将以更高的价格收购过渡型的棉花，以此帮助扩大一种重要有机原材料的供应。
长难句十六
Telling myself that I was merely an experienced writer guiding the young writer across the hall, I offered suggestions for characters, conflicts and endings for her tales. (07.12 Passage 2)
分析主干：I offered suggestions (for...)
句首的Telling 是现在分词，作状语，表示伴随动作：它带了一个宾语从句，从句的表语writer 后接了一个作定语的现在分词guiding...。主句部分的介词for 带有三个名词作宾语，与suggestion 连用，表示“对.......的建议”。
译文：我对自己说，我只是一个有经验的作家，在指导身边的一位年轻作家。我对她的那些故事中的人物尧冲突及结局提出建议。
长难句十七
Some expected emailers to be the biggest liars, reasoning that because deception makes people uncomfortable, the detachment (非直接接触) of emailing would make it easier to lie. (06.6 Passage 1)
分析主干：Some expected emailers to be the biggest liars...
不定式to be the biggest liars 在句中作宾语emailers 的补语。现在分词reasoning在句中作伴随状语。that 引导从句作reasoning 的宾语。该宾语从句又包含一个原因状语从句，由because 引导。
译文：有些心理学家原以为人们在电子邮件中最容易撒谎，理由是：欺骗使人感到不舒服，所以电子邮件这种非直接接触的媒介能让人的谎言更容易说出口。
长难句十八
Consumers are being confused and misled by the hodge-podge ( 大杂烩) ofenvironmental claims made by household procts, according to a “green labeling” study published by Consumers International Friday. (05.6 Passage 2)
分析主干：Consumers are being confused and misled by...
本句用了现在进行时的被动语态，含两个谓语动词confused 和misled。过去分词短语made by...和published by...分别修饰前面的名词claims 和study。
译文：根据消费者国际组织在星期五发表的野绿色商标冶研究报告，消费者受到了各种家居产品五花八门的环保声明的误导，都被搞糊涂了。
长难句十九
I have also witnessed a player reacting to his opponent蒺s intentional and illegal blocking by deliberately hitting him with the ball as hard as he could ring the course of play. (05.6 Passage 1)
分析主干：I have (also) witnessed a player reacting
reacting 在句中是现在分词，作宾语a player 的补语;by... hitting...是reacting 的方式状语，hitting 作介词by 的宾语。as hard as he could 是比较结构，表示“尽力”。
译文：还有一次我看到过一个球员在比赛中因为对方的一个有意犯规阻挡，而故意使足了力气把球砸向对方。
长难句二十
Or perhaps someone will casually glance through your credit card purchases or cell phone bills to find out your shopping preferences or calling habits. (08.6 Passage 2)
分析主干：someone will glance...
本句是个简单句，谓语动词glance 后接介词短语through purchases or bills。不定式短语to find out...在句中作状语，表示“无意中一瞥”的结果。
译文：或者有人会随意翻阅你的信用卡购物单或手机话费单，以此来了解你的购物喜好或通话习惯。
;⑵ 2019年6月大学英语四级阅读理解训练三篇
2019年6月大学英语四级阅配歼读理解培猛冲训练：梦
Of all the components of a good night's sleep, dreams seem to be least within our control. In dreams, a window opens into a world where logic is suspended and dead people speak. A century ago, Freud formulated his revolutionary theory that dreams were the disguised shadows of our unconscious desires and fears; by thelate 1970s, neurologists had switched to thinking of them as just "mental noise"-the random byprocts of the neural repair work that goes on ring sleep. Now researchers suspect that dreams are part of the mind's emotional thermostat, regulating moods while the brain is "off line." And one leading authority says that these intensely powerful mental events can be not only harnessed but actually brought under conscious control, to help us sleep and feel better. "It's your dream," says Rosalind Cartwright, chair of psychologyat Chicago's Medical Center, "if you don't like it, change it."
he link between dreams and emotions shows up among the patients in Cartwright's clinic. Most people seem to have more bad dreams early in the night, progressing toward happier ones before awakening, suggesting that they are working through negative feelings generated ring the day. Because our conscious mind is occupied with daily life we don't always think about the emotional significance of the day's events-until, it appears, we begin to dream.
知脊And this process need not be left to the unconscious. Cartwright believes one can exercise conscious control over recurring bad dreams. As soon as you awaken, identify what is upsetting about the dream. Visualizehow you would like it to end instead; the next time it occurs, try to wake up just enough to control its course. With much practice people can learn to, literally, do it in their sleep.
At the end of the day, there's probably little reason to pay attention to our dreams at all unless they keep us from sleeping or "we wake up in panic," Cartwright says. Terrorism, economic uncertainties and general feelings of insecurity have increased people's anxiety. Those suffering from persistent nightmares should seek help from a therapist. For the rest of us, the brain has its ways of working through bad feelings.Sleep-or rather dream-on it and you'll feel better in the morning.
练习题：
Choose correct answers to the question:
1.By saying that “dreams are part of the mind's emotional thermostat," (Lines 4-5, Para. 1) the researchers mean that _______.
A.we can think logically in the dreams too
B.dreams can be brought under conscious control
C.dreams represent our unconscious desires and fears
D.dreams can help us keep our mood comparatively stable
2.What did Cartwright find in her clinic?
A.Most bad dreams were followed by happier ones.
B.Divorced couples usually have more bad dreams.
C.One’s dreaming process is related to his emotion.
D.People having negative feelings dream more often.
3.Cartwright believed with much practice，we can learn to _____.
A.control what dreams to dream
B.sleep well without any dreams
C.wake up in time to stop the bad dreams
D.identify what is upsetting about the dreams
4.The author points out that a person who has constant bad dreams should ______
A.learn to control his dreams
B.consult a doctor
C.sleep and dream on it
D.get rid of anxiety first
5.The author most probably thinks that controlling dreams is ______.
A.a good practice
B.a new discovery
C.helpful for everyone
D.not essential for everyone
参考答案及解析
1.[D] 词义理解题。在第1段第4句中，逗号后面的regulating moods是对emotional thermostat的功能进行解释说明，因此可以推断出选项D正确。
2.[C] 事实细节题。最具干扰的是选项A，因为其陈述与第2段第2句的陈述有点相似,但是，此长句说的是大多数人上半夜做噩梦，之后都会做好梦，而不是像选项A中所说大多数噩梦之后是好梦。而且，根据本段第1 句，很明显，选项C是这一句的近义替换。
3 [C] 推理判断题。本题考査对代词的理解。在第3段的最后一句中，代词it应指上文说到的控制噩梦，及时醒来等做法，因此只有选项C涉及了其中一个做法。选项A太泛了，选项B和D在文中并无提及。
4.[B] 事实细节题。本题考查根据构词法猜测词义的能力。解题关键是推断最后一段第3句中therapist的意义，在考纲词汇表中，therapy是“治疗”的意思，因此，therapist应该是专门负责某种治疗的医生，由此可见，选项B是对原文seek help from a therapist的近义替换。
5.[D] 观点态度题。根据最后一句可以推断作者认为如无必要，梦还是不要控制的好。做梦会让你早上感觉舒服一些，因此本题应选D。
2019年6月大学英语四级阅读理解训练：机器人跳舞
The dancers stand motionless at their position and the room grows silent. But as the music starts, they began to move, bending, turning and waving their fans gracefully as they perform. a traditional Japanese dance. Yoshihiro Kuroki watches in silence, occasionally making notes. But as the dance ends, he beams with happiness. The performance has been flawless.
There have been many performances of traditional Japanese dances over the centuries, but this one is unique,because it is performed not by human dancers but by robots. And the performance takes place not in a dance studio but in a laboratory of Sony Corp.'s Entertainment Robot Co. in Shinagawa, Japan, where Kuroki isgeneral manager. He is the mastermind behind a series of even more capable humanoid entertainment robots,starting with the Sony Dream Robot, or SDR, in 1997, up to the current QRIO in 2003.
These delightful machines are only 58 cm tall, about the size of a newborn infant, weigh about 7 kg, and move with 38 degrees of freedom, each with its own servomotor(辅助马达).
QRIO's predecessor, the SDR4X, announced in 2002, can walk, dance, sing, speak, recognize faces, and understand continuous speech. Each robot has two charge-coupled-device cameras to detect color and position andcan locate a colored ball, move toward it, and kick it into a goal. It also has contact sensors in severaljoints to avoid pinching real human fingers. Seeing the robot perform, it is difficult to remember that there is no sentience(知觉)behind those glass eyes.
练习题：
Choose correct answers to the question:
1.Which of the following is the most suitable title of this passage?
A.New Entertainment Robots Proced in Japan.
B.QRIO the Robot Dancers.
C.Robots Man's Best Friend.
D.An Extraordinary Performance in Sony's Lab.
2.Yoshihiro Kuroki ______.
A.is excited when the robots are performing a traditional Japanese dance
B.keeps silent because he is a little unsatisfied with the new proct
C.witnesses the creation of a series of entertainment robots
D.is an executive manager of Sony Corp.
3.Which aspect of the robots is NOT mentioned in the passage?
A.The vividness of their motion.
B.Their pleasant appearance.
C.Their smart designing principles.
D.Their communicative ability.
4.The Sony Dream Robot was___
A.the first human-like entertainment robot developed by the Sony Corp
B.as capable as the QRIO of speaking,dancing,singing and walking
C.largest among all the entertainment robot developed by the Sony Corp
D.the first entertainment robot sold at the market by the Sony Corp
5.The robot can locate colored balls by mens of ____
A.a charge-coupled device
B.two cameras
C.two contacts sensors
D.a digital detector
参考答案及解析
1.[A] 主旨大意题。标题需要既全面又突出地概括文章的主题。本文先是描述“舞蹈演员”，然后揭晓这是些“机器人”(第2段第1句)，接着对Sony公司的一些机器人产品进行详细介绍。选项A比较全面地概括了文章内容。选项B、D只是涉及细节，不能全面地概括本文的内容。而C又过于笼统，不具有针对性。
2.[C] 事实细节题。选项C符合第2段最后一句“He is the mastermind behind a series of... robots...”。仔细阅读有关的细节信息会发现,第1段第3句可帮助否定选项A。第1段最后两句可帮助否定选项B。另外，根据第2段倒数第2句可否定选项D。
3.[D] 事实细节题。全文分四段，分别讨论机器人三方面的特点：第1段和第2段描述机器人舞蹈演员栩栩如生的表演，即选项A;第3段描写它们的外表，即选项B;第4段介绍它们巧妙的设计，即选项C;只有选项D是没有提到的，故为答案。
4.[A] 推理判断题。该句中的分词结构“starting with...”表明the Sony Dream Robot是第一个人形娱乐机器人，因此选项A正确。文章在最后一段的第1句提到两种能说话、跳舞的机器人，但没有提到SDR是否和它们一样，由此可否定选项B。在第3段讨论机器人大小的时候也没有提到SDR体型最大，因此选项C不正确。选项D在文中没有讨论到。
5.[B] 事实细节题。该句中“two…cameras to...”的结构表明这两个摄像头可以用于定位，所以选项B正确。选项A在该句中也有提到，但它只是摄像机的工作机制，而不是用于定位的装置。选项C在下一句提到，但与题干提到的定位功能无关。选项D在文中并未提及。
2019年6月大学英语四级阅读理解训练：决定婴儿性别
Henry III didn't know much about biology. He went through six wives back in the 1500s, looking for one whocould bear him a son. Scientists now know that it's the father's sperm, not the mother's egg, which determines whether a baby is a boy or a girl. And last week researchers at the Genetics and IVF Institute, a private fertility(生育能力)center in Virginia, announced a new technique that will allow parents to choose the sex of their baby-to-be, before it has even been conceived. The scientist used a tiny laser detector to measure the DNA in millions of sperm cells as they pass single file through a narrow tube, like cattle being herded through a corral(牲口栏). In a study published last week, "girl sperm," which has more DNA—the genetic material— in each cell, was collected, while "boy sperm" was discarded. And when purified girl sperm was used to impregnate(使受孕)a group of mothers, 15 of 17 resulting babies turned out to be girls.
The researchers say that "sex selection" can also double a mother's chance of having a son and can be usedto avoid genetic diseases that affect only one gender, such as hemophilia(血友病). But some experts, like New York University fertility specialist Dr. Jamie Grifo, worry that sex selection could lead to a kind ofin uteri(子宫)discrimination, especially in cultures where sons are considered superior to daughters. "It's valuing one gender' over another," Grifo says. "I don't think that's something we should be doing." So far, patients at the institute have been asking for both boys and girls, in order to "balance" their families. And some ethics experts say that's fine, as long as parents are just looking for a little gender variety. "If you have three boys, and you want a girl," says University of Texas reproctive-law professor John Robertson, "that's not gender bias at all."
练习题：
Choose correct answers to the question:
1.The DNA in the sperm cells can be measured ______.
A.in the same way how the cattle are herded
B.when they pass through a tube one behind the other
C.after they pass through a laser tube
D.when they are scanned by a laser detector all at a time
2.The gender of the baby is decided by ______.
A.the father's DNA
B.the mother's DNA
C.the father's sperm
D.the mother's egg
3.According to this passage, the practice of "sex selection" ______.
A.can help to prevent all genetic problems
B.is totally unacceptable to ethics experts
C.was already realized five hundred years ago
D.will benefit families with certain inheritable diseases
4.Girl sperm was preferred to boy sperm in the research most probably because____
A.girl sperm contains more genetic material
B.more mother want to have girl babies
C.girl sperm is healthier and more active
D.girl sperm is more easily purified
5.It can be concluded from the passage that author’s toward”sex selection”is____
A.negative
B.positive
C.neutral
D.favorable
参考答案及解析
1.[B] 推理判断题。解答本题的关键在于推断single file的意思。该句把精子通过试管的情形与牛群被赶入牲口圈的情形作对比，结合single一词本身的意思，可以推断single file是“一个接一个”的意思，只有选项B能表达这个意思，由此也可否定选项D。选项A最具干扰性，原句是把精子通过试管的情形比作牛群被赶人牲口圈的情形，而选项A说的是测定精子内DNA的方法与放牧的方法相同，显然选项A只是引用了原文的某些词语，但表达的意思与原文却截然不同。
2.[C] 事实细节题。第1段第3句which引导的非限制性定语从句修饰的是the father's sperm，而不是插入语the mother’s egg,因此选项C正确。
3.[D] 推理判断题。第2段第1句中的genetic暗示有些疾病是遗传的，即如选项D所述。第2段第1句同时表明选项A的说法是不全面的。选项B与第2段最后两句正好相反。第1段前两句说明选项C是错误的。
4.[A] 事实细节题。第1段倒数第2句中的由which引导的定语从句表明选项A的叙述正确。
5.[C] 观点态度题。文章第2段中作者给出了一些反对者和赞成者的观点，但是没有加以评论，可以看出作者的态度是中立的，故选项C正确。
⑶ 大学英语四级常用的语法
有关大学英语四级常用的语法精选
大学英语四级常用语法精选(12)
Ⅴ 连词
并列连词
表示意义的引申: and, both…and, not only…but(also), as well as, and …as well, neither…nor
表示选择: or, either…or
表示转折: but, while, whereas, yet, however/nevertheless(也可认为是副词)
表示因果: for, so, therefore, hence
从属连词
表示时间: when, while, as, after, before, since, until(till), as soon as, once
表示原因: because, as, since, now that, seeing that
表示条件: if, unless, in case, provided(that), suppose, as long as, on condition (that),
表示其他关系: (al)though, than, as/so…as, lest, in order that, so…that
Ⅵ 定语从句
限制和非限制性定语从句: 限制性定语从句是名词词组不可缺少的一个组成部分, 去掉了会造成病句或意义不明确; 非限制性定语从句属于补充说明性质, 去掉了不会影响主要意义, 通常用逗号与它的先行词分开.
The boys who wanted to play football were disappointed when it rained.
The boys, who wanted to play football, were disappointed when it rained.
如果定语从句的先行词是专有名词, 或是带有形容词性物主代词(my, his, etc)或形容词性指示代词(this, that, etc)作限定词, 其后的定语从句通常都是非限制性的:
Mary Smith, who is in the corner, wants to meet you.
Her mother, who had long suffered form arthritis, died last night.
All these books, which have been donated by visiting professors, are to be used by the postgraates.
在非限制性定语从句中只能用who/whom指人, 用which指物,通常不用that替代.
My father, who had been on a visit to America, returned yesterday.
All the books, which had pictures in them, were sent to the little girl.
定语从句的引导词
that, who, whom: 非限制性定语从句, 如果修饰人, 一般用who, 有时用that (作主语时用who较多). 如果关系代词在从句中作宾语, 就应当用宾格 whom 或that, 但在大多数情况下都可以省略掉, 在口语中可用who代替whom.
Here is the man (whom) you've been looking for.
He is a man (that) you can safely depend on.
The people (who/that) you were talking to were Swedes.
There are some people here who I want you to meet.
但在介词后只能用whom:
This is the man to whom I referred.
但在口语中一般都把介词放到句子后面去, 这时可用that, 但省略时更多一些.
Have you met the person about whom he was speaking?
Have you met the person (that) he was speaking about
The girl to whom I spoke is my cousin.
The girl (who/that) I spoke to is my cousin.
限制性定语从句如果修饰“物”, 用关系代词that的时候较多, 也有时用which.. 当这个代词在从句中是用作宾语时, 在绝大多数情况下都是省略的, 特别是口语中(尤其是当被修饰的词是all, everything等词时):
Have you everything you need?
(Is there) anything I can do for you?
All you have to do is to press the button.
2016年大学英语四级语法指导(4)
1. The children went there to watch the iron tower _D_.
A to erect B be erected C erecting D being erected
watch 看电视用，看比赛用; see 看电影用;
感官动词watch， see， hear; 感官动词 + 名词(代词)+ do
be erected 强调的是动作的结果; being erected 强调的是动作的过程。
2. The engine _D_ smoke and steam.
A gives up B gives in C gives away D gives off
give up 放弃; give in 屈服，让步; give off 释放，放出(烟和气体);
give away 泄露，走漏风声;婚礼中新郎的父亲把新娘的手交给新郎的过程;赠送礼品。
3. The manager promised to keep me _C_ of how our business was going on.
A to be informed B on informing C informed D informing
keep sb. + 分词; inform v. 通知，告知; inform sb. of sth. 通知某人某件事情
keep me informed 使我被告知。
4. The goals _B_ he had fought all his life no longer seemed important to him.
A after which B for which C with which D at which
fight with sb. (注意要看整个句子); fight with + 工具 用该工具来打仗。 fight for 为…而战。
I fight with him. 我和他打起来了。 I fight with him against her. 我和他并肩对付她。
5. They _C_ in spite of the extremely difficult conditions.
A carried out B carried off C carried on D carried forward
in spite of 尽管; carry on 坚持，继续。
6. I should like to rent a house， modern， comfortable and _B_ in a quiet neighborhood.
A all in all B above all C after all D over all
all in all 总而言之;above all 首先，尤其是;after all 毕竟，终究;overall 全面的'，总体的
in a word 总之，in short 简而言之，in conclusion 最后，总之，to sum up总之，总而言之。
7. _B_ we have finished the course， we shall start doing more revision work.
A For now B Now that C Ever since D By now
now that 既然，由于(相当于since); ever since 自从…以来。
与that搭配且后面可以加句子的几个表达形式：
now that 既然，由于; in that 因为; except that 除…之外。
except后面加名词或代词;except that后面加句子。
8. What you have done is _D_ the doctor’s orders.
A attached to B responsible to C resistant to D contrary to
be attached to 连接，附属; This school is attached to Beida. 这所学校附属于北大。
responsible to 对…负有责任; resistant adj. 反抗的，抵抗的; water resistant 防水的。
be contrary to 与。。相反(相违背)。
9. John regretted _A_ to the meeting last week.
A not going B not to go C not having been going D not to be going
regret doing 后悔做过某事; regret to do sth. 遗憾的做某事(应用语境非常有限)。
10. We regret to inform you that the materials you ordered are _B_.
A out of work B out of stock C out of reach D out of practice
out of work 失业; out of reach 够不着 within reach 够得着; out of practice 缺乏练习。
2016年大学英语四级语法指导(3)
动名词的复合结构：凡是一个动词的后面可以加动名词，就可以加动名词的复合结构。
动作发出者 + 动名词;当动作发出者名字给出时：名词所有格 + 动名词;当动名词的复合结构在文章中出现，且动作发出者在前文中提过时：形容词物主代词(宾格)+ 动名词。
形容词物主代词：his， her， my， your， their， our。代词宾格：him， her， me， you， us， them。
第二点：want 想要; want to do sth. 想做某事; want doing 客观需要或缺乏。
例. Your hair wants _B_. You’d better have it done tomorrow.
A cut B cutting C to cut D being cut
注意：want doing 中doing表示的是被动含义。
例. This room is so dirty that it wants _A_.
A cleaning B to clean C being cleaned D cleaned
第三点：mean 意味; mean to do sth. 打算做某事，意欲… ;mean doing 意味着，…的意思是…
例. There’s a man at the reception desk who seems very angry and I think he means _B_ trouble. [reception desk 接待台]
A making B to make C to have made D having made
1. The children went there to watch the iron tower _D_.
A to erect B be erected C erecting D being erected
watch 看电视用，看比赛用; see 看电影用;
感官动词watch， see， hear; 感官动词 + 名词(代词)+ do
be erected 强调的是动作的结果; being erected 强调的是动作的过程。
2. The engine _D_ smoke and steam.
A gives up B gives in C gives away D gives off
give up 放弃; give in 屈服，让步; give off 释放，放出(烟和气体);
give away 泄露，走漏风声;婚礼中新郎的父亲把新娘的手交给新郎的过程;赠送礼品。
3. The manager promised to keep me _C_ of how our business was going on.
A to be informed B on informing C informed D informing
keep sb. + 分词; inform v. 通知，告知; inform sb. of sth. 通知某人某件事情
keep me informed 使我被告知。
4. The goals _B_ he had fought all his life no longer seemed important to him.
A after which B for which C with which D at which
fight with sb. (注意要看整个句子); fight with + 工具 用该工具来打仗。 fight for 为…而战。
I fight with him. 我和他打起来了。 I fight with him against her. 我和他并肩对付她。
5. They _C_ in spite of the extremely difficult conditions.
A carried out B carried off C carried on D carried forward
in spite of 尽管; carry on 坚持，继续。
2016年大学英语四级语法指导(2)
短语部分没有独立主语，则短语结构称为非谓语动词。
非谓语动词的结构：分词(分词短语)
句子的主语决定非谓语动词中的分词是用主动还是被动形式。如果是句子的主语发出动作，则使用现在分词;如果动作不是由句子的主语发出，则使用过去分词。
1.No matter how frequently _A_， the works of Beethoven always attract large audiences.
A performed B performing C to be performed D being performed
perform vt. 表演，演出，演奏;
to be performed 将要被演奏; being performed 正在被演奏;
一些特殊的动词：
第一点：forget 忘记; [反义] remember 记得;
这两个词后加动词不定式表示将要进行的行为;这两个词后加动词ing形式表示已经做过的事情。
注意：动名词与现在分词形式一样，但含义不同。这两个词后加动词ing形式都是动名词。
forget to do sth. 忘记要去做某事; forget doing sth. 忘记做过某事;
remember to do sth. 记得要去做某事; remember doing sth. 记得做过某事;
2. I remember _B_ to help us if we ever got into trouble.
A once offering B him once offering C him to offer D to offer him
offer vt. 提出，提供; offer sb. sth. / offer to do sth.
him once offering 如果改成 his once offering 也正确。
动名词的复合结构：凡是一个动词的后面可以加动名词，就可以加动名词的复合结构。
动作发出者 + 动名词;当动作发出者名字给出时：名词所有格 + 动名词;当动名词的复合结构在文章中出现，且动作发出者在前文中提过时：形容词物主代词(宾格)+ 动名词。
形容词物主代词：his， her， my， your， their， our。代词宾格：him， her， me， you， us， them。
第二点：want 想要; want to do sth. 想做某事; want doing 客观需要或缺乏。
例. Your hair wants _B_. You’d better have it done tomorrow.
A cut B cutting C to cut D being cut
1. The children went there to watch the iron tower _D_.
A to erect B be erected C erecting D being erected
watch 看电视用，看比赛用; see 看电影用;
感官动词watch， see， hear; 感官动词 + 名词(代词)+ do
be erected 强调的是动作的结果; being erected 强调的是动作的过程。
2. The engine _D_ smoke and steam.
A gives up B gives in C gives away D gives off
give up 放弃; give in 屈服，让步; give off 释放，放出(烟和气体);
give away 泄露，走漏风声;婚礼中新郎的父亲把新娘的手交给新郎的过程;赠送礼品。
3. The manager promised to keep me _C_ of how our business was going on.
A to be informed B on informing C informed D informing
keep sb. + 分词; inform v. 通知，告知; inform sb. of sth. 通知某人某件事情
keep me informed 使我被告知。
4. The goals _B_ he had fought all his life no longer seemed important to him.
A after which B for which C with which D at which
fight with sb. (注意要看整个句子); fight with + 工具 用该工具来打仗。 fight for 为…而战。
I fight with him. 我和他打起来了。 I fight with him against her. 我和他并肩对付她。
5. They _C_ in spite of the extremely difficult conditions.
A carried out B carried off C carried on D carried forward
in spite of 尽管; carry on 坚持，继续。
注意：want doing 中doing表示的是被动含义。
例. This room is so dirty that it wants _A_.
A cleaning B to clean C being cleaned D cleaned
第三点：mean 意味; mean to do sth. 打算做某事，意欲… ;mean doing 意味着，…的意思是…
例. There’s a man at the reception desk who seems very angry and I think he means _B_ trouble. [reception desk 接待台]
A making B to make C to have made D having made
2016年大学英语四级语法指导(1)
非谓语动词与独立主格：短语，句子(或者句子，短语)
当短语部分有独立主语，并且该主语不同于句子主语，这时短语结构称为独立主格。(它最明显的特点是短语部分有独立的主语)。
独立主格的结构1：名词(代词)+ 分词 [现在分词、过去分词]
现在分词表示主动的，正在进行的行为;过去分词表示被动的，已经完成的行为。 作题时要通过判断动作与名词(代词)之间的关系来确定是使用现在分词还是过去分词。当动作由名词(代词)发出时使用现在分词，而名词(代词)是受动者时则用过去分词。
1. Silver is the best conctor of electricity， copper _B_ it closely.
A followed B following C to follow D being followed
2. All things _A_， the planned trip will have to be called off.
A considered B be considered C considering D having considered
call off 取消; cancel vt. 取消; 四级中的考点就是现在分词和过去分词的区别。
独立主格的结构2：with + 名词(代词)+ 分词 [句子当中作状语]
3. After the Arab states won independence， great emphasis was laid on expanding ecation， with girls as well as boys _C_ to go to school.
A to be encouraged B been encouraged C being encouraged D be encouraged
as well as 和(相当于and); be encouraged不会考。
动词不定式有预示将来行为的含义。to be encouraged 将要被鼓励;
been encouraged 已经被鼓励完了，与主句的谓语动词相对;being encouraged 正在被鼓励
短语部分没有独立主语，则短语结构称为非谓语动词。
非谓语动词的结构：分词(分词短语)
句子的主语决定非谓语动词中的分词是用主动还是被动形式。如果是句子的主语发出动作，则使用现在分词;如果动作不是由句子的主语发出，则使用过去分词。
1.No matter how frequently _A_， the works of Beethoven always attract large audiences.
A performed B performing C to be performed D being performed
perform vt. 表演，演出，演奏;
to be performed 将要被演奏; being performed 正在被演奏;
一些特殊的动词：
第一点：forget 忘记; [反义] remember 记得;
这两个词后加动词不定式表示将要进行的行为;这两个词后加动词ing形式表示已经做过的事情。
注意：动名词与现在分词形式一样，但含义不同。这两个词后加动词ing形式都是动名词。
forget to do sth. 忘记要去做某事; forget doing sth. 忘记做过某事;
remember to do sth. 记得要去做某事; remember doing sth. 记得做过某事;
2. I remember _B_ to help us if we ever got into trouble.
A once offering B him once offering C him to offer D to offer him
offer vt. 提出，提供; offer sb. sth. / offer to do sth.
him once offering 如果改成 his once offering 也正确。
2016大学英语四级听力10大常考场景总结（4）
场景四：购物
1.采购衣服
必备词汇表
size 型号 come in all sizes 号全
2.采购电器
必备词汇表
model 款 discount 折扣
latest technology 最新的科技 rece 减少
;⑷ 四级作文中怎么增加从句的使用
首先，从句分为很多种，主语，宾语，定语，状语，等等，收先我觉得得先了解各个从句的意思。
1，主语从句
常规主语从句，即句子在复合句中充当一个主语
主语从句的时态：不受主句的时态影响和限制。
（1）That he finished writing the composition in such a short time surprised us all.
（2）What we need is time.
（3）What we need are good doctors.
小结:
（1）引导主语从句连词有that,whether,who,what,whatever等
（2）连词位于句首不能省略
（3）主语从句大多数情况下视为第三人称单数，但也有例外，如例（9）
注意： 当what引导的名词性分句作主语时，主谓一致问题极为复杂。著名学者周海中教授在论文《关于what-分句作主语的主谓一致问题》中就这一问题做了深入研究，并给出了10种的主谓一致关系。这些一致关系值得英语学习者和使用者特别注意。[1]
第二部分
为了防止句子头重脚轻，通常把形式主语it放在句首位置，真正主语搁置于句末
（1）It is certain that he will win the match.
（2）It is said that he has gone to shanghai.(=He is said to have gone to shanghai)
（3）It is known to all that the gun powder was first invented by the Chinese.
（4）It is suggested that the work should be done with great care.
小结:
（1）为避免头重脚轻，常以形式主语it引导从句。 It+形式主语谓语+从句。
（2）由于主语从句一般被认为是单数形式，形式主语的谓语动词、be动词+表语 均为单数第三人称形式或过去式.（这种主语从句可以多使用点）
2，宾语是一个动作的承受者，多分为直接宾语(动作直接承受者）和间接宾语（动作间接承受者），下面的例子多使用在作文中，可以参考
动宾从句
大多数及物动词都可以带宾语从句
We all expect （that ）they will win,for members of their team are stronger.
我们都预料他们会赢，因为他们的队员更强壮.
He told us （that） they would help us through the whole work.
他告诉我们在整个工作中，他们都会帮忙的.
部分“动词+副词”结构也可以带宾语从句
I have found out （that） all the tickets for the concert have been sold out.
我发现这场音乐会的所有票都卖光了.
动词短语也可以带宾语从句
常见的这些词有：
make sure确保 make up one’s mind下决心 keep in mind牢记
Make sure that there are no mistakes in your papers before you turn them in.
3.定语从句，在作文中可以多使用的，比较简单，已不容易犯错的， 定义从句死用来休息一个名词的，
定语氛围限定性和非限定性的，相比较而言，限定性的比较容易，for example
he is the guy who i met yesterday.在这个句子中who i met yesterday 就是用来限定“he'的，意思是他是我昨天遇到的那个人。换句话说，他只是我昨天遇到的，不是前天或者大前天遇到的， 这样的的从句其实可以在作文中多用，
4.状语
所谓状语是指时间，地点 方式等，状语从句比较复杂，不建议在作文中使用，状语从句多用于叙述故事等等。其中目的状语可以使用，for example
To help my disabled aunt , I spend an hour working in her house every day . 类似这样的！
希望可以帮你啊哈！
⑸ 英语四级阅读出题点是什么呢—北外网课
常见英语四级阅读出题点有以下几种：
一、转折
英语四级大纲在阅读理解部分都指出：测试学生通过阅读获取书面信息的能力。因此，为了有针对性的考查大家对书面信息的获取能力，经过对历年真题的归纳总结发现，英语四级考点出处有一定特征。其中第一大特征就是在逻辑关系处出考题。
先带大家看看大家最熟悉的考点出处：转折处出考点。常见转折关联词有：but, however, yet, nevertheless, while(然而), on the contrary等等。
真题再现
大家先试试身手，不会的话，记得找出真题再做一遍哟！
例1：A few months ago, it wasn't unusual for 47-year-old Carla Toebe to spend 15 hours per day online. She'd wake up early, turn on her laptop and chat on Internet dating sites and instant-messaging programs – leaving her bed for only brief intervals. Her household bills piled up, along with the dishes and dirty laundry, but it took near-constant complaints from her four daughters before she realized she had a problem.(2010.6, cet4 )
51. What eventually made Carla Toebe realize she was spending too much time on the Internet?
A. The poorly managed state of her house.
B. The high financial costs adding up.
C. Fatigue resulting from lack of sleep.
D. Her daughter's repeated complaints.
【答案】D
【解析】本段主要描述了Carla Toebe因上网严重影响到生活，最后一句后半句通过转折指出，是她4个女儿的不停抱怨才让她最终意识到自己有了问题(had a problem)，而这一问题正是题干中提到的“spending too much time on the Internet”。
二 、并列因果
除了最熟悉的转折以外，逻辑关系还包含：并列、举例、因果、递进等等。而紧排在转折之后，相对在历年真题中较多出现的考查处，分别是：并列和因果。
常见表并列的词语：and, while(同时), meanwhile, also;
值得注意的是：两个句子之间用分号(;)隔开，也表并列。
常见表因果的词语：because, why, the reason, for, so, since, as a result等。
同样值得注意的是：当why引导一个问句时，考点出处往往是紧接着回答此问题的句子或相邻的几个罗列点或相连几段话的首句。
并列和因果都比较难以察觉，需要同学平时练习过程中就有意识地对这两种逻辑关系进行关注。
真题再现
大家先试试身手，不会的话，记得找出真题，再做一遍哟!
例1：(并列)They weren't looking for cured meats, organic proce or beautiful presentation; they were looking for whatever they could get their hands on, and this prioritisation of quantity over quality prevailed for decades, meaning a generation was brought up with food that couldn't compete with neighbouring France, Italy, Belgium or Spain.(2011.6, cet 4)
53. Why couldn't Britain compete with some of its neighbouring countries in terms of food in the post-war decades?
A. Its food lacked variety.
B. Its people cared more for quantity.
C. It was short of well-trained chefs.
D. It didn't have flavourful food ingredients.
【答案】B
【解析】本段后半部分提到，这种只重数量不重质量的习惯持续了几十年，这意味着一代英国人是被无法和邻近的法国、意大利、比利时和西班牙相媲美的食物养 大的。由此可知，英国食物无法跟邻国竞争是因为英国人只重数量不重质量。B选项是对原文中“prioritisation of quantity over quality”的同意转述。
三 、特殊标记
细心的同学会在以前的英语四级大纲中发现，快速阅读部分写到：“要求考生运用略读和查读的技能从篇章中获取信息。“考核学生利用各种提示，快速查找特定信息的能力。这些提示包括文中的以下信息：
1. 数字
2. 大写单词
3. 段首或句首词等
很显然，这一条不仅适用于快速阅读，也适用于仔细阅读。
真题再现
例1：Richard Got professor of astrophysics at Princeton, hopes man will set up a self-sufficient colony on Mars, which would be a “life insurance policy against whatever catastrophes, natural or otherwise, might occur on Earth. (2008.6, cet6)
66. According to Princeton professor Richard Gott, by setting up a self-sufficient colony on Mars, Humans_____.
A. might survive all catastrophes on earth
B. might acquire ample natural resources
C. will be able to travel to Mars freely
D. will move there to live a better life
【答案】A
【解析】题干中setting up a self-sufficient colony on Mars可在原文中直接找到，原文中which引导的定语从句表示的内容就是setting up a self-sufficient colony on Mars所带来的影响：人类能够应对地球上各种各样的灾难从而幸存下来。A选项中的survive all catastrophes on earth 是对原文的同义转述。
四、标点符号
下面讲解阅读考点常考出处的最后一个特征：总有部分题目出自引人注目的 —— 标点符号处。在四六级阅读过程中，引人注目的标点符号，不得不关注的标点符号主要有两类：1. 引号;2. 小括号。
1. 引号
1)尤其是当引号表示着重强调时
如：They are using fewer of the very deferential “women’s” forms, and even using the few strong forms that are know as “men’s” .
2)某人说的话，能够集中表达一个事实或观点时
如："If it's a loss [where] you're not getting to work, and family relationships are breaking down as a result, then it's too much." said Maressa Orzack, a Harvard University professor.
2. 小括号
小括号中间加一个汉语注释，非常容易引起大家的注意。此处就不赘述。我们还是通过真题举例来看具体考察情况吧。
真题再现
例1(引号)：Toebe also regularly visits a site where posters discuss Internet overuse. In August, when she first realized she had a problem, she posted a message on a Yahoo Internet addiction group with the subject line: "I have an Internet Addiction."(2010, 6, cet4)
8. In one of the messages she posted on a website, Toebe admitted that she ______.
【答案】had an Internet Addiction
【解析】首先分析结构可知，本空所填内 容是充当that宾语从句的谓语，主句的admitted表明谓语应用过去时。原文提到Toebe在雅虎的一个上网成瘾群里发了一条消息，引号中的内容为 这条小的的主题：“我有网瘾”。由此可知，Toebe承认自己“上网成瘾”。故答案根据时态要求进行修改为：had an Internet Addiction.
⑹ 英语四级语法辨析：when, while与as的用法区别
英语四级语法用法辨析：when, while与as的用法区别
1. 根据从句动作的持续性来区分
若是“主短从长”型，即主句是一个短暂性的动作，而从句是一个持续性动作，此时三者都可用。如：
As [When, While] she was waiting for the train, she became very impatient. 她在等火车时，变得很不耐烦。
若是“主长从长”型，即主句和从句为两个同时进行的动作或存在的状态，且强调主句动作或状态延续到从句所指的整个时间，此时通常要用while。如：
I always listen to the radio while I'm driving. 我总是一边开车一边听收音机。
但是，若主句和从句所表示的两个同时进行的动作含有“一边……一边”之意时，则习惯上要用as。如：
He swung his arms as he walked. 他走路时摆动着手臂。
若是“主长从短”型，即主句是一个持续性动作，而从句是一个短暂性动作，此时可以用as或when，但不能用while。如：
It was raining hard when [as] we arrived. 我们到达时正下着大雨。
2. 根据主句与从句动作是否同时发生来区分
若主句与从句表示的是两个同时发生的短暂性动作，含有类似汉语“一……就”的意思，英语一般要用as (也可用when)。如：
The ice cracked as [when] I stepped onto it. 我一踩冰就裂了。
He jumped to his feet as the boss came in. 老板一进来他立刻站了起来。
若主句与从句表示的是两个几乎同时发生的短暂性动作，含有类似汉语“刚要……就”“正要……却”的意思，英语一般要用as(也可用when)，且此时通常连用副词just。如：
Just as [when] the two men were leaving, a message arrived. 就在这两个人要离开的时候，突然有了消息。
3. 根据是否具有伴随变化来区分
若要表示主句动作伴随从句动作同时发展变化，有类似汉语“随着”的意思，英语习惯上要用as，而不用when或while。如：
The room grew colder as the fire burnt down. 随着炉火逐渐减弱，房间越来越冷。
As time goes by my memory seems to get worse. 随着时间的流逝，我的记忆力似乎越来越差。
若不是引导从句，而是引出一个短语，则用with，不用as。如：
With winter coming on, it's time to buy warm clothes. 随着冬天到来，该买暖和衣裳了。
The shadows lengthened with the approach of sunset. 随着太阳下落，影子也逐渐伸长。
4. 根据从句动作的规律性来区分
若暗示一种规律性，表示“每当……的时候”，英语一般要用when。如：
He smiles when you praise him. 你夸奖他时他总是笑笑。
5. 根据主从句动作的先后顺序来区分
若主句与从句所表示的动作不是同时发生，而是有先后顺序时，一般要用when。如：
When he arrives he'll tell us all about the match. 等他到了，他会好好给我们讲讲那场比赛的情况。
When she had finished she waited as though for a reply. 她讲完之后等了等，仿佛是在等候回答似的。
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