傑克是班裡最高的學生英語怎麼說

① 「傑克人很好，他是班裡最受歡迎的男孩」的英語翻譯

Jack is so easy-going that he is the most popular boy in my class. 這是復合句

Jack is an easy-going person, so he is the most popular boy in my class. 這是簡單句
Jack is easy to get along with, so he is the most popular boy in my class. 這是簡單句的另一種表達

Good luck！

② (我們選傑克做我們的班長) 翻譯成英語怎麼說

We elected Jack as our monitor.