昨天已是過去英語怎麼翻譯成英文

① (開心只為今天,昨天的已過去,明天開不開心是明天的事情)的英文怎麼翻譯

Happy only for today, yesterday has past, tomorrow is tomorrow, not happy about that

② 昨天已經成為過去，一切從今天開始。用英語怎麼說

Yesterday has already past. Today is the new beginning of everything.

③ 昨天已經過去用英語怎麼說

yesterday is history

或者
yesterday has gone

④ <昨天已經過去,明天還沒到來,我所能把握的只有今天>這段話幫忙翻譯成英文

<Yesterday the past, not come tomorrow, I can only grasp today>