1、時間狀語從句常見的從屬連詞有：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 ho

2、nest the first time I met her.注意：（1） when, while, as 的區別：,從句的動作可以是（主先從后）同時）（持1）when引導從句時，主從句的動作有先有后，也可以同時進行 持續性的，也可以是短暫的。如：When I got to the airport, the plane had already taken off.（短暫性）When I lived there, I used to go to the seaside on Sundays.（續性）（從先主后）When the movie ended, the people went back.2

3、）while側重主從句動作的對比，且從句的動詞必須是持續性的。如:While we were chatting she was looking at the time table on the wall 3）as引導從句時側重主從句動作同時或幾乎同時進行，從句的動作可以是持續性 的，也可以是短暫的。如：Sometimes I watch TV as I am having breakfast .4） whenft while還可以是并列連詞，意思分別是“就在這時”，“然而”。如: I was having a rest on the sofa when the telephone rang.T

4、hey were surprised that a child should work out the problem while they couldn ' t .注：并列連詞when常用與以下句型中：was/were doing when -（正在做突然）was/were about to do -when （剛要做突然）was/were on the point of doing when（要做突然 ）had just done- when-.(剛一就) Hardly/Scarcelyhaddonewhen(剛一就)(2)before 引導從句時, 詞義非常靈活，注意下列句子中的

5、before 的詞義：1.Before I could get in a word, the tailor had measured me.(還沒來得及就)2 .We hadn' t run a mile before he felt tired.(還沒就)3 .We had sailed 4 days before we saw land.( 才.)4 .Please write it down before you forget it.(趁還沒就)(3)till (until) 和 not - till (until)1) till (until):主句謂語動詞必須是持續性的，意思

6、是“到為止”如：He remained there till/until she arrived.2) not - till (until) ：主句謂語動詞必須是短暫性的，意思是“直到才” 如：She won t go to bed till/until he returns home.3) not - until還有強調式和倒裝式：強調句：It is not until he returns home that she will go to bed.倒裝句：Not until he returns home will she go to bed.4) ) 幾個極易混淆的時間狀語從句：1) I

7、t was + 時間點+when(當的時候時間是)It was 5 am when we arrived at the village.2) It was/will be+ 時間段+before(沒過就/過了才)It was/will be two weeks before we met/meet again.3) It is /has been + 時間段+since(自從以來有)It is/has been 3 years since we last met.突破點：一看be 動詞的時態，二看時間段還是時間點。注意：在“It is /has been + 時間段+since”句型中，從句的

8、動詞必須是短暫性的，如果是延續性的動詞，時間要從從句的動作結束時算起。如：It is 3 years since I smoked.（ 我戒煙有三年了）補充： as soon as, immediately, directly, instantly, the moment, the minute , the instant, no sooner than ，hardly/scarcely .when.和 once 這些從屬連接詞引導的從句都表示從句的動作一發生，主句的動作隨即就發生，常譯為“一就”。從句中一般時態代替將來時態。every time, each time, next time,

9、the first time, any time, all thetime等名詞短語用來引導時間狀語從句，表示“每當.，每次.；下 次”等。（一）鞏固練習題1. It was quiet those big trucks started coming through thetown.A. before B. after C. until D. unless1.1. Hardly had he reached the school gate the bell rang.A. while B. when C. as D. as soon as3. He was about to go to bed

10、 the doorbell rang.A. while B. as C. before D. when4. John was watching TV, his wife was cooking.A. As B. As soon as C. While D. Till5. The children ran away from the orchard（ 果園 ） they saw theguard.A. the moment B. after C. before D. as6. No sooner had I arrived home it began to rain.A. when B. whi

11、le C. as D. than7. Hardly had he arrived in Hongkong she rang me up.A. when B. than C. that D. and8. Someone called me up in the middle of the night ， but they hung upI could answer the phone.A. as9. The roof fell baby.A. beforeB. since he hadB. asC. untiltime to dash intoC. afterD. beforethe room t

12、o save hisD. until10. Scientists say it may be five or ten years it is possible totest this medicine on human patients.A. since B. beforeC. afterD. when11. Several weeks had gone by I realized the painting was missing.A. as B. before C. sinceD. when12. It long before we the result of the experiment.

13、A. will not be; will knowB. is; will knowC. will not be ;know D. is; know13. - What was the party like?-Wonderful.It s years I enjoyed myself so much.A. after B. before C. when D. since14. The new secretary is supposed to report to the manager as soon as she.A. will arrive B. arrives C. is going to

14、arriveD. isarriving15. got into the room the telephone rang.A. He hardly had; thenB. Hardly had he; when C. He had not;then D. Not had he; when16. No sooner had he finished his talk he was surrounded by theworkers.A. as B. then C. than D. when17. - Did you remember to give Mary the money you owed he

15、r?-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 timeC. the first time D. by thefirst time19. He will have learned English for eight years by the time he from the university next year.A. will grad

16、uate B. will have graduated C. graduates D. is to grad20. He got excited at the news ， I was calm.A. when B. while C. because D. after21. I saw Mr. Smith last Sunday. We had not seen each other Ileft London.A. asB. beforeC. sinceD. till22. I ll be back before you .A. will leave B. will have left C.

17、leaveD. would leave1. I used to love that film I was a child, but I don't feel itthat way any more. （2008 遼寧卷 ）A. onceB. whenC.sinceD. although2. Nancy enjoyed herself so much she visited her friends in Sydneylast year. （ 2008福建）A. thatB. whichC.whenD. where3. There were some chairs left over ev

18、eryone had sat down.（ 2008四川卷）A. whenB. untilC.thatD. where4. In some places women are expected to earn money men work at homeand raise their children.A. butB. whileC.becauseD. though5. the Internet is of great help, I don't think it's a good ideato spend too much time on it. （2008 卷 ）A. IfB. WhileC.BecauseD. As6. I'm sorry you've been waiting so long, but it'll still be some timeBrian get back.