时间状语从句

1、个性化辅导教案授课时间：备课时间：年级:初一课时：2学生姓名：教研老师：陈小燕课题:时间状语从句教学目标正确运用时间状语从句难点重点时间状语从句各引导词间的区别时间状语从句whe n,while和as引导时间状语从句的用法这三个词的意思很简单，都有当时候”的意思一、when的用法whe n从句的动词大多是瞬时动词，多数情况下用的是一般过去时,不用正在进行时，教 学 内 容而主句的时态没有限制，根据具体情况而定。When she came into my room, I was just reading a book.Were you writi ng whe n the teacher cam

2、e in?老师进来的时候,你在与信吗？Sorry, I was教out whe n you called me.对不起，你打电话来的时候我出去了。学I had hardlyscarcely closed my eyes whe n some one kno cked at the door.内我刚一闭上眼，就有人在敲门了容二、while的用法while从句的侧重点在于描述动作正在发生的状态，它的意思是:当while事件正在发生的时候,另一件事如何如何。所以，while从句一般用正在进行时而另一件事的状态没有硬性的要求，根据具体情况而定。例如：1. While my wife was read

3、ing the n ewspaper, I was watch ing TV.当妻子正在看报纸的时候，我正在看电视。2. While Jim was mending his bike, Lin Tao came to see him.3. While they were talki ng, the bell rang.正在他们谈话的时候，上课铃响了。4. You can ' t do your homework while you' re watching TV.你不能一边看电视一边做家庭作业。5. While Joh n was sitt ing bit ing his n

4、ails, I was work ing out a pla n to get us home. 约翰坐在 那里咬指甲时，我正在制定一个回家的计划。while表示的是一段时间，是一个过程。因此，如果含有一段时间”的含义的时候，就可以用while。6. Strike while the iron is hot.趁热打铁。这句话中，是说趁着铁是热的这段时间，赶紧打铁。如果换成whe n意思就变了，相当于说铁只热了一下，打一下，然后铁就冷了。这显然不符合文意。三、as的用法as从句表示的也是一件事情正在发生，另一件事也正在进行当中。但与while从句不同的是，as从句一般不用正在进行时，而是一般过去

5、时。as从句一般可以翻译成 边边”例如：1. As my mother sang those old son gs, tears ran dow n her cheeks.当我妈妈唱起那些老歌时，眼泪顺着她的脸颊流了下来。2. The stude nts took n otes as they liste ned学生们边听课边做笔记。3. As we talked on, he got more and more excited我们继续往下谈的时候，他越来越兴奋。4. The little girls sang as they went.小姑娘们一边走，一边唱。5. Just as he ca

6、ught the ball, there was a teari ng sound.当他抓住球的时候，有一种撕裂的声音。as表达的事件，往往只是主句动作发生的背景或条件时，as只是一个次要的时间说明，不像while从句，有强调 while动作本身的意思。因此，as常常翻译成随着”之意。1. As the time went on, the weather got worse.随着时间的推移，气候更加糟糕。2. The atmosphere gets thinner and thinner as the height in creases.随着高度的增加，大气越来越稀薄。3. As years

7、go by China is getting stronger and richer.随着时间一年一年过去，中国变得越来越富强了。少数情况下，如果强调动作正在发生，as从句也可以用正在进行时。这只能算是特例 了。1. The sad mother sat on the roadside, shouti ng as she was crying.伤心的妈妈坐在路边，边哭边叫喊。2. As we were going out, it bega n to snow.正当我们出门时，雪开始下起来。3. He came in as I was going to bed.我正要上床睡觉，他进来了。四、wh

8、en, while, as 的互换如果从句动作和主句动作同时发生，并且从句动作为延续性动词时，when，while，as可以互换使用。1. Whe n /While /As we were dancing, a stra nger came in.当我们跳舞时，一位陌生人走了进来。danee为延续性动词2. Whe n /While /As she was mak ing a phone call, I was writ ing a letter.当她在打电话时，我正在写信。make为延续性动词3. While/When/ As I was walking down the street, I

9、 noticed a police car in front of thebank.我顺着马路往前走时，发现银行门前停着一辆警车。五、比较 while, when, as1) as, when引导短暂性动作的动词。Just as / Just whe n / Whe n I stopped my car, a man came up to me.我刹车后，有一个人向我走来。2） 当从句的动作发生于主句动作之前，只能用whe n引导这个从句，不可用as或while oWhe n you have fini shed your work, you may have a rest.干完活后，你可以休

10、息一下。3） 从句表示随时间推移”连词能用as,不用when或while。As the day we nt on, the weather got worse.日子一天天过去，天气越变越坏。2）比较 until 和 till此两个连词意义相同。肯定形式表示的意思是做某事直至某时”，动词必须是延续性的。否定形式表达的意思是直至某时才做某事”。动词为延续性或非延续性都可以。正确使用这两个连词的关键之一就在于判断句中的动词该用肯定式还是否定式。肯定句：I slept un til mid night.我一直睡到半夜时醒了。Wait till I call you.等着我叫你。（在肯定句中可用 bef

11、ore 代替。例如：Let's get in the wheat before the sun set）.否定句：She did n't arrive un til 6 o'clock.她直到 6 点才到。Don't get off the bus un til it has stopped.公共汽车停稳后再下车。I did n't man age to do it un til you had expla ined how.直到你教我后，我才会做。区别：1） until可用于句首，而till通常不用于句首。Un til you told me, I h

12、ad heard nothing of what happe ned.直到你告诉我以前，出了什么事我一点也不知道。3） until when疑问句中，until要放在句首。例如：-Until when are you staying? 你呆到什么时候？-Un til next Mo nday.呆到下周一。注意：否定句可用另外两种句式表示。4) Not until 在句首，主句用倒装。Not until the early years of the 19th century did man know what heat is.直至U 19 世 纪初，人类才知道热为何物。Not until I b

13、egan to work did I realize how much time I had wasted.直至U工作，才认识至U 我已蹉跎了许多岁月。5) It is notun tilthatIt was not until I began to work that I realized how much time I had wasted.6) 表示一就”的结构hardly/scarcelywhen/before, no soone和 as soon s都可n以表示 一就”的意思。I had hardly / scarcely got home when it began to rain

14、.刚回家，就下起雨来了。I had no sooner got home tha n it bega n to rain.As soon as I got home, it bega n to rain.注意：如果 hardly, scarcely 或 no sooner置于句首，句子必须用倒装结构。Hardly / Scarcely had I got home when it began to rain.No sooner had I got home tha n it bega n to rain.练习在下列各句的空格中填入适当的连词1. he comes tomorrow, I sha

15、ll ask where he has been.2. he was speaking, everybody listened carefully.3. I saw her justshe was getting off the train.4. Have a good look at that manyou pass him.5. It was already eight o'clockwe got there.a visitor came.6.1 was about to go out7. We'll go to the country at the beginning o

16、f June,the summer harvest will start8. He lear ned to speak Germa nhe was in Berl in.9. Henry is in charge of the officeMr. Smith is away.10. I liste n to the recorderI have time.11. He had lear ned Chin esehe came to Chi na.12. the work was done, we sat dow n to sum up experie nee.13. I have n'

17、t see n himhe moved to the other side of the tow n.14. I waitedhe came back.15. It was nothe took off his eyeglasses that I recog ni zed him.16. She likes everyth ing to be in placeshe starts to work.17. The thieves ran awaythey caught sight of the police.18. They decided to go back hometheir money

18、ran out.19. We played outside till sun set,it bega n to rain20. I get to the airport, I will phone you to pick me up.21. They were about to leaveit bega n to rain.22. He always stay in bedlunch time.23. I like play ing tennismy youn ger sister prefers watch ing ball games.24. I understand your viewp

19、oint, I don' t agree with25. she grew older, she became more resp on sible.Key:1. When 2. While / When 3. as4. whe n/as5. whe n6. whe n 7. whe n8. while 9. while 10. whe never11. before12. After 13.sin ce14. till/u ntil15. until 16. before 17. as soo n as 18. before 19. when20. As soo n as22. un

20、 til23. while24. While 25. As单项选择。()1.My house isthe post office and the ban k.AonB inC betwee nD over()2. What' s your favorite music ? .A I like pop music bestB My favorite sin ger is Liu Hua nC I ofte n play basketball with you D My favorite is En glish()3.? I like a small one.A Where is the

21、countryB What size pizza would you likeC Why do you like panda best D Where are elephants from()4. Did you go shopping yesterday? .A Yes, I do B Yes, I did C Yes, I am D No, I couldn ' t()5. Do you like country ? Yes,.A Yes, I am a country fanB Yes, I am a pop fanC Yes, I am in terested in class

22、ical musicD Yes, he is a fandoes the? He is tall a nd thin.AlookB look likeC looks likeDlike()7. The girl isquiet.Aa bit little B a little bit C little a bitDbit a little()8. My frie nd is agirl.Agood-look ingBgood-lookClook ing-goodD look-good()9.? Go upstairs and turn right.A What are the jazz CDs

23、B Where are the CDsC Who is the woma nDHow can you si ng the song()10. ? He is thirteen years old.A Where is he from B Why do you like him C How old is he D Is he very smart()11. Do you like a small, medium or large pizza?.AI ' d like a medium pizza BYes, I likeCI ' d like some cheese on it

24、DI want buy some()12. I don ' t like hot dogshamburgers.A andB orC withD but()13. a bottle of milk, some hot dog ,and hamburgers on the table.A There are B There is C There haveD There has()14. ? She is a nurse.AWhere does your mother doBWhat does your mother doCWhat is your mother doingDWho is

25、your mother()15. Where do you work ?.AI work in a schoolBI am a teacherCI want to be a teacher DI go to school every day句式转换。1. We had eggs and milk for breakfast.(改为一般疑问句)2. There was a beautiful girl in the park.(画线提问)3. David went to the summer camp last week.(改为否定句)4. They usually does homework at home.(用 now 改写)5. He went for a walk every morni ng.(画线提问)6. The Japa nese woma n was 70 years old (.画线提问)写出下列名词的复数形式：toyorangechairc