初二英语时间状语从句讲解与理解练习Word文档下载推荐.docx

1、也就是说，when 从句的重点不在动作本身发生的状态，而只是把它作为一个时间点，所以when 多数情况下用的是一般过去时，则不用正在进行时。因为如果用正在进行时，它表示的就是一段时间而不是一个时间点了。根据这一点，有的文章补充说：when 从句的动词大多是瞬时动词。这种说法也可以参照。实际上，when 从句也可以有其它的时态，但几乎也不用进行时，因为它也只是作为一个时间参照点。例如：1. When I got to the airport, the guests had left. 当我赶到飞机场时，客人们已经离开了。2. When he had finished his homework,

2、he took a short rest. 当他完成作业后，他休息了一会儿。3. Why do you want a new job when you have got such a good one already? 你已经找到如此好的工作，为何还想再找新的？4. You shall borrow the book when I have finished reading it. 在我读完这本书后，你可以借阅。5. When the manager comes here for a visit next week, Ill talk with him about this. 下周，经理来这参

3、观时，我会和他谈谈此事。二、while 的用法相比于when 来说，while 从句的侧重点就不一样了。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 从句一般用的是正在进行时。而另一件事的状态没有硬性的要求，根据具体情况而定。1. While my wife was reading the newspaper, I was watching 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. 正

4、当吉姆修自行车时，林涛来看他。3. While they were talking, the bell rang. 正在他们谈话的时候，上课铃响了。4. You cant do your homework while youre watching TV. 你不能一边看电视一边做家庭作业。5. While John was sitting biting his nails, I was working out a plan 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。从时间的角度来看，while 表示的是一段时间，是一个过程。这是while 的侧重点。因此，如

5、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 when 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。再例：Im going to the post office. While youre there, can you get me some stamps?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 从句用的一般不用正在进行时，而只是一般过去时。as 从句一般

6、可以翻译成“边边”。1. As my mother sang those old songs, tears ran down 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 students took notes as they listened. 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 caught the

7、ball, there was a tearing 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。例如：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 increases. 随着高度的增加，大气越来越稀薄。3. As years g

8、o 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, shouting 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 began 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、w

9、hen, 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。这种情况下，它们的细微区别恐怕连英、美人自己也说不清了。1. When /While /As we were dancing, a stranger came in. 当我们跳舞时，一位陌生人走了进来。 dance 为延续性动词2. When /While /As she was making a phone call, I was writing 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

10、was walking down the street, I noticed a police car in front of the bank. 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。 例如：Just as / Just when / When 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when 引导这个从句，不可用as 或 while。When you have finished your wor

11、k, you may have a rest. 干完活后，你可以休息一下。3）从句表示“随时间推移”连词能用as，不用when 或while。 As the day went 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 until midnight. 我一直睡到半夜时醒了。Wait t

12、ill I call you. 等着我叫你。（在肯定句中可用before代替。Lets get in the wheat before the sun sets.）否定句：She didnt arrive until 6 oclock. 她直到6点才到。Dont get off the bus until it has stopped. 公共汽车停稳后再下车。I didnt manage to do it until you had explained 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。Until you told me, I had

13、heard nothing of what happened. 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。 -Until when are you staying?你呆到什么时候？ - Until next Monday.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。 例如：Not until the early years of the 19th century did man know what heat is. 直到19 世纪初，人类才知道热为何物。 Not until I began

14、 to work did I realize how much time I had wasted. 直到工作，才认识到我已蹉跎了许多岁月。5）It is not until that.It 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 soonerthan和as soon as都可以表示“一就”的 意思。 I had hardly / scarcely got home when it began to r

15、ain. 刚回家，就下起雨来了。 I had no sooner got home than it began to rain. As soon as I got home, it began to rain. 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 than it began to rain.六、练习：在下列各句的空格中填入适当的连词1_ he comes tomorrow, I s

16、hall ask where he has been. 2_ he was speaking, everybody listened carefully. 3I saw her just _ she was getting off the train. 4Have a good look at that man _ you pass him. 5It was already eight oclock _ we got there. 6. I was about to go out _ a visitor came. 7Well go to the country at the beginnin

17、g of June, _ the summer harvest will start.8. He learned to speak German _ he was in Berlin.9. Henry is in charge of the office _ Mr. Smith is away. 10. I listen to the recorder _ I have time. 11. He had learned Chinese _ he came to China. 12. _ the work was done, we sat down to sum up experience. 1

18、3. I havent seen him _ he moved to the other side of the town. 14. I waited _ he came back. 15. It was not _ he took off his eyeglasses that I recognized him. 16. She likes everything to be in place _ she starts to work. 17. The thieves ran away _ they caught sight of the police. 18. They decided to

19、 go back home _ their money ran out. 19. We played outside till sunset, _ it began to rain。20. _ I get to the airport, I will phone you to pick me up. 21. They were about to leave _ it began to rain. 22. He always stay in bed _ lunch time. 23. I like playing tennis _ my younger sister prefers watchi

20、ng ball games. 24. _ I understand your viewpoint, I dont agree with you. 25. _ she grew older, she became more responsible. Key:1. When 2. While / When 3. as 4. when/as5. when 6. when 7. when 8. while9. while10. whenever11. before 12. After 13. since 14. till/until15. until 16. before17. as soon as

21、18. before 19. when20. As soon as21.when 22. until 23. while24. While 25. As初二英语下Module 8 开始学习时间状语从句，很多学生感到有困难，为了让学生轻松地学好枯燥的英语语法知识，我想了很多办法，其中最重要的是向学生解释清楚有关时间状语从句的一些基础知识。一、用简洁的语言向学生解释清楚什么是时间状语从句：当我们用一个句子表达一件事情发生的时间时，这个句子叫做时间状语从句。二、帮助学生理解并掌握初二学生必须掌握的几个连词。1）区分 when 与 while when引导的从句的谓语动词可以是延续性的动词，又可以是瞬

22、时动词。Eg: When she came in, I stopped eating.她进来时，我停止吃饭。（came为瞬时动词）While引导的从句的谓语动作必须是延续性的，此延续性动词常用进行时态。 While my wife was reading the newspaper, I was watching TV. 我妻子读报时，我在看电视。（was reading是延续性的动词，was reading和was watching同时进行） While we were having a meeting, Mr. Black came in. 正当我们开会时，布莱克先生进来了。（were h

23、aving a meeting 是延续性动词， 该动作正在进行时，另一个动作发生）2）学会使用before 与 afterbefore 表示 “在之前”;after 表示 “在之后” My father had left for Canada just before the letter arrived.我父亲恰好在信到之前去加拿大了。 After we finished the work, we went home. 完成工作之后，我们回家了。3）掌握 as soon as 一就这个词组常出现在完成句子中，考试的几率比较多。 I will go there as soon as I fini

24、sh my breakfast. 吃完早饭，我立即到那里去。As soon as I reach Canada, I will ring you up. 我一到加拿大，就给你来电话。（注意：此句型常考时态：主句用将来时，从句用一般现在时。）4）理解并掌握until 直到 I worked until he came back.我工作到他回来为止如果主句中的谓语动词是瞬时动词时，必须用否定形式。 I didnt fall asleep until mother came back last night. 昨晚直到妈妈回家我才入睡。（要注意翻译：notuntil 直到才）如果主句中的谓语动词是延续

25、性动词时，用肯定或否定形式都可以，但表达的意思不同。I worked until he came back.我工作到他回来为止。I didnt work until he came back.他回来我这才开始工作。t go to bed until my father came back.直到我父亲回来我才上床睡觉。三、加强实战操练。在课堂教学时，我针对学生的实际情况适时加以操练，并以专题训练的形式对学生进行实战训练，以加深学生对时间状语从句的理解。下面是我给学生的一套训练题。1）用括号里的连词把下列句子连接起来。 Be careful. You are crossing the street

26、. （while） The bell rings. The students come into the classroom. （as soon as） I didnt go home. I finish the school work. （until）2） 选择填空。 Mother _ when father was reading newspapers.A. is cookingB. was cookingC. cooks I _ to bed until I finished writing the composition.A. didnt goB. wentC. did go I was doing the housework _ my mother was having a rest. A. as soon asB. beforeC. while I will call you as soon as