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. 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 used to go to the seaside 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，
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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 surprised 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 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)
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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.Please 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）
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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。
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。
练习题
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1. It was quiet ________ those big trucks started coming through the town.
A. before B. after C. until D. unless
2. It seemed only seconds ________ 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.
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.
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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
13. –What was the party like?
--Wonderful. It’s years _____ I enjoyed myself so much.
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A. after B. before C. when D. since
14. The new secretary is supposed 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
16. No sooner had he finished his talk _____ he was surrounded by the workers.
A. as B. then C. than D. when
17. –Did you remember to give Mary the money you owed her?
--Yes, I gave it to her _____ I saw her.
A. while B. the moment C. suddenly D. once
18. I thought her nice and honest _____ I met her.
A. first time B. for the first time C. the first time D. by the first time
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19. He will have learned English for eight years by the time he _____ from the university next year.
A. will graduate B. will have graduated C. graduates D. is to graduate
20. The moment the 28th Olympic Games _____ open, the whole world cheered.
A. declared B. have been declared C. have declared D. were declared
答案：CBBBA DACAD BCDBB CBCCD
状语从句
一、时间状语从句 1、 as soon as “一、、、、、、就、、、、、、”引导时间状语从句的连词有
The moment The minute directly instant immediately
No sooner than
Hardly had sb , done… when ….did ….. Scarcely when
The moment she comes, I’ll call you.
She left immediately the meeting was over.
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Hardly had he got off the bus when he heard a loud noise
2、when ,while , as 引导时间状语从句时间点段时间 区 别 When 主从同时先后While 主从同时 对比 As 主从同时 （一边、、、一边）
It was raining when we arrived.
My mother came in when I was doing my homework.
While /when I was doing my homework, my mother came in. I am safe while I am here.
He hurried home, looking behind as he went. As I left the house, I forgot the key. 主从句时
态 Will you please bring me your book when you come here tomorrow?
I will go home when I have finished my work . When / while 连词引导并列句 Was/ were about to do … Was /were going to do …. Was/were on one’s way…
Was .were on the point of doing…. When ….
Was/were doing…. (“这时” 表同时) Had done …
Jasmine was holidaying with her family in a wildlife park when she was bitten on the leg by a lion. …….while …….(“然而” 表反比)
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I do every single bit of housework while my husband Bob just does the dishes now and then. 3、before 引导时间状语从句 1）“还没等”（谓语不用否定式）
Before they got to the bus stop, the bus had gone.
2) “….. (之后)才/就”
It was evening before we reached the little town of Winchester. 3)固定句型：
It will (not) be some time before ……
do …… It was (not) some time before ….did ….. It won’t be long before ……do……
It wasn’t long before ……did…..
4 . until /till （ till 不用于句首或强调句） 引导时间状语从句 1）…..not ….until/till…直到……才
He didn’t go to bed until he had finished his work 2) …...until /till …..直到……为止
We were told that we should follow the main road until we reached the railway station .
3)强调句式
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It is not until …that …
It was not until midnight that he went back home after the experiment.
4) not until 放在句首时，主句半倒装。
Not until he came close to me did I recognize him. 5. since 引导时间状语从句
1）主句（现在完成时）+（ever）since +状从（过去时） Mr. Li has been here ever since he came back
2) it is has been )+段时间+since 装从（过去
时） It is five years since they got married. It is over ten years since he worked here. 6.还有部分连词引导时间状语从
句 The first time each time The last time every time Next time by the time (Shortly) after (Soon) after Once
By the time + 状从（过去时），主句（过去完成时） By the time + 状从 （现在时），主句（将来完成时）
By the time she came back, all the guest had left.
By the time the class is over, we will have finished learning the whole passage. The first time I went to New York City, I was completely lost. He would bring me something good to eat each time he came. Shortly after he had finished school, he found a job in the company.
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练习题
1.It was quiet ________ those big trucks started coming through the town.
A. before B. after C. until D. unless
2. It seemed only seconds ________ 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.
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
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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
13. –What was the party like?
--Wonderful. It’
s years _____ I enjoyed myself so much. A. after B. before C. when D. since
14.The new secretary is supposed 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.
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A. He hardly had; then B. Hardly had he; when C. He had not; then D. Not had he; when
16. No sooner had he finished his talk _____ he was surrounded by the workers. A. as B. then C. than D. when
17. –Did you remember to give Mary the money you owed her?
--Yes, I gave it to her _____ I saw her. A while B. the moment C. suddenly D. once
18. I thought her nice and honest _____ I met her.
A. first time B. for the first time C. the first time D. by the first time
19. He will have learned English for eight years by the time he _____ from the university next year. A. will graduate B. will have graduated C. graduates D. is to graduate
20. The moment the 28th Olympic Games _____ open, the whole world cheered. A. declared B. have been declared C. have declared D. were declared
答案：CBBBA DACAD BCDBB CBCC
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