问两个时间状语的句子After dinner we waited for the concert to begin为什么

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问两个时间状语的句子
After dinner we waited for the concert to begin为什么不用wait
By the time you read this,I have left.为什么不是 I will leave或者I had left?

因为这是一个发生在过去的动作,所以用waited
第二句很明显,有一个时间状语By the time,到……的时候
整句的意思：到你阅读这个的时候,我已经离开了.
另外read 原型同过去式一样,只是读音不一样,如果这儿的read 是一般现在时,就用have left,
如果是过去时,就用had left,但是绝对不会用will leave
希望回答对你有用!

问两个时间状语的句子After dinner we waited for the concert to begin为什么 How about _____ we go to the concert after dinner? --- How about ____ we go to the concert after dinner ? --- A 在The pianist waited for silence _he began to play .中填时间状语 how about _we go to the concert after dinner? After the mini concert,we had a late dinner.It was terrific We waited for the traffic lights to turn g___ how abou ___we go to the concert after dinner?A.when B.if C. We are going to play computers games for( ) after dinner ( ) 16. They waited silently _______. A. for the film begin I waited for the rain to stop .After two hour,I came bake ho 改错题I waited for the rain to stop.After two hour,I came back