---peter has already left.---whenhe?---yesterday.

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/04/30 07:48:02

---peter has already left.---when__he__?---yesterday.
我想问一下那两个空为何是did 和leave而不是has 和left?

其实你问的应该是现在完成时和一般过去式的区别
1.一般过去时表示过去某个时间发生的事、存在的状态或经常发生的动作.说话的侧重点只在于陈述一件过去的事情,不强调对“现在”产生的影响.比如你提到的例句中,乙所问的只是离开的时间,而不是离开对现在的影响.
2.现在完成时表示动作发生在过去,对现在造成了影响或产生了结果.不与确定的过去时间状语连用.
E.g.你看过这部电影吗?
Have you seen the film?（A）
Did you see the film?（B）
（A）句强调的是被问者对剧情是否了解；
（B）句强调的是看这部电影的动作是否发生过,并不强调是否知道其内容.
两种时态的区分其实有个简单的方法,就是看时间状语是”点“还是”段“：
一般过去时通常与表示过去”时间点“的状语连用.如：yesterday,last week,in May Day等；而现在完成时则常与just,already,ever,never等副词或these days,this week,since...,for...表示”一段时间“的状语连用.

---peter has already left.---when__he__?---yesterday. He has left since yesterday . --Peter has passed the driving test already.--Really?I___. Peter has already read the book.改为一般疑问句. 20道句型转换,1.Kate has already written to Peter.(改为一般疑问句)_____ K is the news that he has already left london true?的翻译是什么? 英语翻译he has already left ten minutes。这样？ten minutes前需要介词么 The Whites( )a.has already left b.is going to leave c .have He has left Shanghai for three days already.这句子对吗? Have you made sure/certain that the train has already left? (1)He has work there _____(already,just,since) he left schoo When__he__?He__an hour ago.用have/has been to/in,have gone to