２０１4高三英语复习：英语必备经典句型
1.as soon as…一…就…=directly/immediately/instantly…
=the second/the minute/the moment/the instant…
Eg. He came around to see me as soon as/the moment/immediately he checked in the hotel. 他刚一入住宾馆就来看我.
They informed us the news immediately/directly they got it.
他们一得到消息就通知了我们.
The policeman came to the spot the moment/the instant/the minute she heard of the accident.一听说事故，这位警察就到了现场.
2.….before….
(1).没来得及…就…
The roof fell before he had time to dash into the room to save his baby.
他还没有来得及冲进房间把孩子就出来，房顶就塌了.
He ran off before I could stop him.
To my great disappointment，my favorite singer left the concert before I could have a word with him.
(2).过了多久才怎么样，动作进行到什么程度才怎样
They walked about thirty miles to the west before they saw a village.
They worked day and night about three days before everything returned to normal. Three years passed before I knew it.
3.It was+时间段+before….过了多久才….；
It was not long before…不久就…
It will(not)be+时间段+before…要过多久(不久)…..才…..
Eg.It was not long before he sensed the danger of the position.
It was three years before he came back.
It will be half a year before you graduate from this school.
4.no sooner…than…=hardly…when…一…就….，刚刚…就…
No sooner/hardly+过去完成时，than/when+一般过去时
如果no sooner，hardly位于句首，主句要倒装.
He had hardly sat down to have a rest when the doorbell rang and in came Allan.
No sooner had he got off the train than his daughter ran towards him.
Hardly had we arrived when she started crying to go home.
5.once一旦….，表示时间和条件
Once you understand this rule，you will have no further difficulty.
Once you have decided to do something，you should do it well.
Once you enter the chemistry lab，you should follow the teacher?s instructions.
6.since…自从….以来
Since引导的从句不论是延续性或非延续性动词，都表示的是动作或状态的完成或结束. 注意一下句子翻译：
Since he lived in Nanjing，I have not heard from him.(=since he left Nanjing…)
自从他离开南京以来，我没有收到过他的信.
Since she was in Yangzhou，she has kept in touch with her former friends.(since she left Yangzhou…)
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