时间状语从句 常见的从属连词有：(注意其汉语意义)
when, while, as, before, after, since, until (till) once as soon as, the moment, the minute, immediately, directly, each/every time, the first time, the last time, next time, by the time, whenever等。例如：
Every/Each time I was in trouble, he would come to my help.
形容悲痛的成语I thought her nice and honest the first time I met her.
注意：（1）when, while, as的区别：
1)when引导从句时，主从句的动作有先有后，也可以同时进行,从句的动作可以是持续性的，也可以是短暂的。如：
When I got to the airport, the plane had already taken off. （主先从后）（短暂性）
When I lived there, I ud to go to the aside on Sundays. (同时) （持续性）
When the movie ended, the people went back. （从先主后）
2)while侧重主从句动作的对比，且从句的动词必须是持续性的。如：
While we were chatting she was looking at the time table on the wall．
3)as引导从句时侧重主从句动作同时或几乎同时进行，从句的动作可以是持续性的，也可以是短暂的。如：
Sometimes I watch TV as I am having breakfast．
4）when和while还可以是并列连词，意思分别是“就在这时”，“然而”。如：
I was having a rest on the sofa when the telephone rang．
They were surprid that a child should work out the problem while they couldn’t .
注：并列连词when常用与以下句型中：
①…was/were doing…when…（正在做…突然）
②…was/were about to交换英语 do…when…（刚要做…突然）
③…was/were on the point of doing…when…(刚要做…突然)
④…had just done…when….(刚一…就)
⑤Hardly/Scarcely had…done…when…(刚一…就)
(2)before引导从句时,词义非常灵活，注意下列句子中的before的词义：
1.Before I could get in a word, the tailor had measured me.(还没来得及…就)
2.We hadn’t run a mile before he felt tired.(还没…就)
3.We had sailed 4 days before we saw land.(…才…)
4.Plea write it down before you forget it.(趁还…没就)
(3)till (until) 和not…till (until)
1） till (until):主句谓语动词必须是持续性的，意思是“到…为止“如：
He remained there till/until she arrived.
2） not…till (until)…: 主句谓语动词必须是短暂性的，意思是“直到…才”如：
She won’t go to bed till/until he returns home.
3） not…until还有强调式和倒装式：
强调句：It is not until he returns home that she will go to bed.
倒装句：Not until he returns home will she go to bed.
(4)几个极易混淆的时间状语从句：
1） It was +时间点+when…（当的时候时间是）
It was 5 am when we arrived at the village.
2） It was/will be+时间段+before…(没过…就／过了…才)
It was/will be two weeks before we met/meet again.
3） It is /has been +时间段+since…（自从…以来有…）
It is/has been 3 years since we last met.
突破点：一看be动词的时态，二看时间段还是时间点。
天使导航注意：在“It is /has been +时间段+since…”句型中，从句的动词必须是短暂性的，如果是延续性的动词，时间要从从句的动作结束时算起。如：
It is 3 years since I smoked.( 我戒烟有三年了)
补充：as soon as, immediately, directly, instantly, the moment, the minute, the instant, no sooner…than…, hardly/scarcely….when….和once这些从属连接词引导的从句都表示从句的动作一发生，主句的动作随即就发生，常译为“一…就…”。从句中一般时态代替将来时态。
every time, each time, next time, the first time, any time, all the time等名词短语用来引导时间状语从句，表示“每当…..，每次…..；下次……”等。
杏花的诗练习题
葡萄酒品牌前十名
1. It was quiet ________ tho big trucks started coming through the town.
A. before B. after C. until D. unless
2. It emed only conds ________ the boy finished washing his face.
A. when B. before C. after D. even if
3. Hardly had he reached the school gate ________ the bell rang.
出现英语A. while B. when C. as D. as soon as
4.We were told that we should follow the main road _____ we reached the central railway station.
A. whenever B. until C. while D. wherever
5. I recognized you ________ I saw you at the airport.
A. the moment B. while C. after D. once
6. He was about to go to bed ________ the doorbell rang.
A. while B. as C. before D. when
7.________I listen to your advice, I get into trouble.
A. Every time B. When C. While D. Until
8. _____ John was watching TV, his wife was cooking.
A. As B. As soon as C. While D. Till
9. The children ran away from the orchard(果园) ______ they saw the guard.
A. the moment B. after C. before D. as
10. No sooner had I arrived home _____ it began to rain.
A. when B. while C. as D. than
11. Several weeks had gone by _____ I realized the painting was missing.
A. as B. before C. since D. when
12. It _____ long before we ____ the result of the experiment.
A. will not be; will know B. is; will know C. will not be ; know D. is; know
伤心难过的图片
13. –What was the party like?
favorites --Wonderful. It’s years _____ I enjoyed mylf so much.
A. after B. before C. when D. since
14. The new cretary is suppod to report to the manager as soon as she_____.
A. will arrive B. arrives C. is going to arrive D. is arriving
15. _____ got into the room _____ the telephone rang.
A. He hardly had; then B. Hardly had he; when C. He had not; then D. Not had he; when
