初三知识点U3

1、八年级上知识点总结Unit3 What were you doing when the rainstorm came?本单元语法归纳：过去进行时：1. 概念: 表示过去某一时刻或某段时间内正进行的动作。2. 构成: was/were + 动词现在分词3. 用法: a: 表示某一时刻正进行的行为, 与特定的过去时间状语连用,常见的时间有: at 8 last night, at this time at that time, at that moment 等e.g. What were you doing at 10 yesterday morning? I was writing a lett

2、er to my father at that moment.b: 表示过去某段时间内正进行的动作。e.g. We were building a house last winter.They were waiting for you yesterday.否定句和疑问句：e.g. We were not sleeping at home. Was he feeling well?4. 现在分词的构成1) 一般动词在词尾加-ing, 如go-going。2) 以不发音字母e结尾的动词, 先去掉e, 再加-ing。 come-comingmake-making write-writing3) 以重

3、读闭音节结尾的动词, 如果末尾以一个辅音字母结尾, 应先双写这个字母, 再加ing， x和w结尾的除外。如: get-gettingswim-swimming show-showing4) 以字母y结尾的单词, 直接加ing。 如carrying、playing、studying。5) 以字母ie结尾的动词, 变ie为y, 再加ing。 die dying lie lying6) 以元音字母加e结尾, 或以e结尾, 且e发音的 动词, 直接加- ing。 see-seeingbe-being5. 在本单元中, 出现了以when和while引导的时间状语从句。when表示“当的时候”。从句中既可

4、用延续性动词, 又可用非延续性动词, 这些动词既可以表示动作, 又可表示状态。从句中的动作既可和主句的动作同时发生, 又可在主句的动作之前或之后发生。如：Mary was having dinner when I saw her .The boy was still sleeping when his mother got home yesterday morning .while表示“在的时候”、“在期间”。它强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中。While从句中必须是表示动作或状态的延续性动词。如：The weather was fine while we

5、were in Beijing .She called while I was out.如果主句的动作在从句的动作过程中发生，从句常用进行时。如:While we were swimming someone stole our clothes .Dont talk so loud while others are working.总结：1) when可指时间点, 又可指时间段, 从句中可用延续性动词, 也可用非延续性动词。 2) while总是指一个时间段, 从句中必须用延续性动词。6. 过去进行时和一般过去时的区别1) 过去进行时表示过去正在进行的动作, 而一般过去时则表示一个完整的动作。如

6、：They were writing letters to their friends last night.昨晚他们在写信给他们的朋友。(没有说明信是否写完)They wrote letters to their friends last night .他们昨晚写了信给他们的朋友。(表达了他们已写好的意思, 整个写的过程已完成)练一练. 用所给词的正确形式填空1. What _ (be) you _ (do) when he arrived?2. Jim _ (sleep) when I came in.3.They _ (watch) TV at 8:00 yesterday evenin

7、g.4. Now he _ (read) and _(write). 5. Mother _ (wash) clothes when I_ (get) home from school yesterday afternoon.6. Look, my sister _ (be) there in the barber shop. The barber _ (cut) her hair.7. -When _ you _ (see) the accident?-I _ (see) it fifteen minutes ago.II.选择最佳答案：1.She thought I was praisin

8、g her child, _ in fact, I was scolding him for his bad behaviors at school.A. what B. while C. sothat D. therefore2.I do every single bit of housework_ my husband Bob just does the dishes now and then. A. while B. since C. when D. As3. People in China are always dressed _their best clothes _ New Yea

9、rs Day. A. at, in B. to, on C. in, on D. in, at4.We were swimming in the lake _ suddenly the storm started.A. when B. while C. until D. before5.-You seem to have had that car for years.-Yes, its in good condition, but I should sellit _ it still runs.A. if B. before C. because D. while6._ Jennifer wa

10、s reading a magazine, his sister was listening to the pop music.A. WhileB. When C. What time7. I was trying to draw a cat on the board _ the teacher came in.A. while B. when C. what time8. My best friend visited my house while I _ dinner in the kitchen.A. cooked B. cooking C. was cooking9. Dick gave

11、 me a notewhileI _ in the library. I guess he made it to say “sorry” to you. (2007黄冈市)A. am reading B. was reading C. reads D. will read10. I met a friend of mine _ I was walking in the park. A. before B. when C. after D. if11. Well go for a walk if it _ tomorrow. A. will not rain B. isnt raining C.

12、 doesnt rain D. isnt rain12. I met Li Lei _ hospital last Sunday. He was ill _ hospital then. A. in the, in the B. in, in the C. in the, in D. in, in13. When you are _ trouble, why not phone the _? A. at, police B. in, policeman C. in, police D. at, policeman14. _ useful invention the computer is! A

13、. What a B. What an C. How a D. How an15. I cant find _ to sit on the crowded bus. A. nowhere B. somewhere C. anywhere D. everywhere16. My mother was cooking while I _ the radio. A. listened to B. have listened to C. was listening t D. is listening to17. _ TV at that time? A. Did you watch B. Have y

14、ou watched C. Were you watching D. Are you watching18. They arrived _ Paris _ a winter evening. A. at, in B. to, on C. in, on D. in, at19. Mr. Green told us _ too much time _ reading novels. A. dont take; on B. not to take; in C. not to spend; in D. dont to spend; on20. The thief _ the purse and _.

15、A. drops, run after B. dropped, ran away C. dropped, run away D. dropped, ran awayIII. 翻译下列句子1. 上课铃响时, 你在干什么? What _ you _ when the class bell rang? 2. 当我妈妈进来时我正在看书. I _ _ when my mother came in. 3. 昨天晚上十点钟她正在做饭. She _ _ at ten oclock _ _. 4.当飞机着陆的时候, 天正下着大雪。 It _heavily when the plane _. 5. 瞧, 孩子们正

16、在追逐一只小猫。 Look! The children _ a small cat.6.我女儿正在写信时, 其他的孩子都在外面玩耍。My daughter was writing a letter _the other children _ outside.VII. 短文填空(15分)从方框中选择适当的单词完成短文，使短文通顺、连贯。A. fell B. coming C. hitting D. by E. felt F. to save G. were taken H. went I . tired J. slowly H. hurt k. broken One night David wa

17、s driving a car to go home from work with his wife Mary. Mary was a nurse in a hospital. It was almost midnight and she was 51 . she soon 52 asleep . David was a careful and experienced driver. He knew it was safer to drive 53 on a dark night. After some time, he noticed a car following him. It was

18、traveling very fast. Suddenly it drove past and was in front of Davids car. The driver of the car was in a hurry. So the driver did not see the 54 bus. To keep away from 55 it , he turned his car to one side suddenly. It went off the road and hit a big tree. The driver and his passengers were 56 . They were badly cut by the glass from the 57 windows. David quickly stopped his car 58 the side of the road . Mary got ou