初二上冊英語語法精講名補(bǔ)教案 Unit10 if引導(dǎo)的條件狀語從句

1、.*;初二上冊暑假英語補(bǔ)習(xí)班名補(bǔ)教案目的進(jìn)步班 名師培優(yōu)精講【教學(xué)標(biāo)題】 if條件狀語從句【教學(xué)重點(diǎn)】if條件的理解及用法；條件狀語從句通常由連詞if引導(dǎo)?！窘虒W(xué)難點(diǎn)】if引導(dǎo)的條件狀語從句“主將從現(xiàn)；正確區(qū)分if引導(dǎo)的條件狀語從句和if引導(dǎo)的賓語從句【進(jìn)門得分】一、單項(xiàng)選擇1. If you _ to the party, youll have a great time. A. will go B. went C. go D. going2. I _ her the answer if she _ me. A. can tell, will ask B. will tell, will as

2、k C. would tell, ask D. will tell, asks3. What are you going to do tomorrow? Well go to the library tomorrow if it _. A. isnt rain B. rain C. wont rain D. doesnt rain4. Do you know when he will come back tomorrow? Sorry, I dont know. When he _ back, Ill tell you. A. comes B. will come C. come D. may

3、 come 5. Ill give the book to him if he _ here next Sunday.A. will come B. comes C. is coming D. came6. There _ an English film in our school tomorrow.A. is going to have B. will have C. is going to be D. has7. Ill wake you up when he _back.A. will B. is going to come C. comes D. come8. The football

4、 match will be put off if it _.A. will rain B. rains C. rainedD. is rained9. There _ a basketball game this afternoon.A. is going to have B. will beC. is going to play D. will play10. I wont go if it _ tomorrow. Arain Bis raining Crains Dwill rain【教學(xué)內(nèi)容】一、概念 連詞if的意思是“假如，它引導(dǎo)的句子表示某事發(fā)生所需要的條件，即“在條件下某事才能發(fā)

5、生，在句子中充當(dāng)狀語，因此我們稱之為條件狀語從句。在復(fù)合句中連詞if引導(dǎo)的句子為從句，被修飾的句子為主句。從句可以放在主句后，也可以放在主句前，從句放在主句前時(shí)，應(yīng)用逗號將它與主句隔開。例如： Well go to the Great Wall if it doesnt rain tomorrow. = If it doesnt rain tomorrow, well go to the Great Wall. 假如明天不下雨，我們就去長城。二、用法 1. 條件狀語從句通常由連詞if引導(dǎo)，意為“假如，假設(shè)，主句不能用be going to 表示將來，而應(yīng)該用shall或will。例如： If

6、Im free tomorrow, Ill go with you. 假如我明天有空，我將會(huì)和你一起去。 2. if引導(dǎo)的條件狀語從句，主句用一般將來時(shí)，從句那么用一般如今時(shí)，即“主將從現(xiàn)。例如： If it is sunny tomorrow, Ill climb the hill. 假如明天天氣晴朗，我將去爬山。 3. 正確區(qū)分if引導(dǎo)的條件狀語從句和if引導(dǎo)的賓語從句。 在條件狀語從句中，if表示“假如；而在賓語從句中，if表示“是否?？梢杂孟旅娴姆椒▍^(qū)分： 1 從句前置法：if引導(dǎo)的條件狀語從句，可以放在主句之前并用逗號隔開，也可放在主句之后；而if引導(dǎo)的賓語從句只能放在主句之后。因此

7、假如把if放在主句之前，句子通順，意義不變，那么是條件從句，否那么是賓語從句。例如： He will help you if you ask him. = If you ask him, he will help you. 假如你問他，他會(huì)幫助你。 2 whether交換法：if引導(dǎo)賓語從句時(shí)，其意為“是否，通?？捎脀hether交換，意義不變，而if引導(dǎo)條件狀語從句時(shí)不能用whether交換。因此，可用whether交換的是賓語從句，不能交換的是條件從句。例如： I want to know if you will go tomorrow. = I want to know whether

8、you will go tomorrow. 我想知道你明天是否去。注意：區(qū)分if的用法有著極為重要的意義，因?yàn)樵跅l件狀語從句中，主句用將來時(shí)，從句用一般如今時(shí)；而在賓語從句中，當(dāng)主句是一般如今時(shí)，從句可用所需的任何時(shí)態(tài)，主句是一般過去時(shí)，從句用過去的某種時(shí)態(tài)?！具^手練習(xí)】真題鏈接1. You will see many aunts dancing together on the square if it _ in the evening. A. doesnt rain B. rains C. will rain D. wont rain 2. We will go to Tiananmen S

9、quare to watch the raising of national flag if it _ tomorrow. A. will rain B. rains C. doesnt rain D. wont rain3. My parents are always worried about what will happen if I _. A. succeeded B. wont succeed C. will fail D. fail【拓展訓(xùn)練】二、用所給詞的適當(dāng)形式填空1. If you _feel tired, you _ have to have a rest.2. Where

10、 _ he _ see the film if he _have time?3. If there _ be fewer trees, there _ be more pollution.4. He _ dress more casually if he _ not work on weekends.5. If Marcia _ live alone, she _ keep a pet parrot.6. Lana _ buy a new dress if the old one _ be out of style.7. The twins _ fight if they_ argue.8.

11、I _ have a bake sale if I _ need money for education.9. Peter _ send me a beautiful souvenir if he _ go to Spain.10. If Mr. Green _ say I am hard- working, my parents _ feel glad.11. I _ go to the beach if it _ not rain this week.12. _they _ have a match if the P.E. teacher_ be not busy?13. He _ wri

12、te a letter to his grandparents if he _ get his report card this week.14. If she _ get up late, she _ not catch the early bus.15. Peter _ major in English if he _ pass the exams in Peking University.【課后作業(yè)】三、完成句子1.假如他遲到了，會(huì)發(fā)生什么事情？What _ _ if he _ late?2. 假如努力學(xué)習(xí)，你就會(huì)獲得好成績。If you_ _, you _ _ good _.3. 他假

13、如看電視太久了，他的父母會(huì)不快樂。 If he _ TV too much, his parents _ _ unhappy.4. 假如我們?yōu)樗e辦生日聚會(huì)，大家都會(huì)來的。Everyone _ _ if we _a birthday party _ him.5. 假如明天不下雨，我會(huì)和你一起去公園的。 If it _ _ tomorrow, I _ go to the park _ you.6. 假如她睡過頭了，就會(huì)誤了開會(huì)的。 She _ _ _ _ the meeting if she _ _. 7. 假如他有空，他會(huì)幫助你的。If he _ _, he _ _ you.8. 假如Tom考

14、試不及格，他就沒有時(shí)機(jī)上高中了。Tom _ miss the chance to go to the high school if he _ the exams.9. 你假如抄同學(xué)的作業(yè)就不能學(xué)好各門功課。You _ _ good at all the subjects if you _ the other students homework. 一、單項(xiàng)選擇。1. C。此題是if引導(dǎo)的條件狀語從句，主句用一般將來時(shí)，從句用一般如今時(shí)，即“主將從現(xiàn)，所以答案為C。2. D。根據(jù)句意“假如她問我，我就告訴她答案?？芍揪涫莍f引導(dǎo)的條件狀語從句，主句用一般將來時(shí)，從句用一般如今時(shí)，從句的主語為單三

15、，動(dòng)詞后加-s，所以答案為D。3. D。條件狀語從句，主句用一般將來時(shí)，從句用一般如今時(shí)，rain在此是實(shí)義動(dòng)詞“下雨的意思，故答案為D。4. A。根據(jù)“主將從現(xiàn)可知本句答案為A。此題是when引導(dǎo)的時(shí)間狀語從句。5. B。根據(jù)“主將從現(xiàn)可知答案為B。6. C。be going to do，will do都可以表示將來的動(dòng)作，但只有選項(xiàng)C符合There be句型要求。 7. C。根據(jù)“主將從現(xiàn)可知答案為C。8. B。根據(jù)“主將從現(xiàn)可知答案為B。9. B。此題考察there be句型的一般將來時(shí)，there will be，故答案為B。10. C。根據(jù)“主將從現(xiàn)可知答案為C。真題鏈接1. A。句

16、意：假如晚上不下雨，你會(huì)看到很多阿姨在廣場上一起跳舞。這是if引導(dǎo)的條件狀語從句，主句用一般將來時(shí)，從句用一般如今時(shí)，即“主將從現(xiàn)，結(jié)合句意，所以答案為A。2. C。句意：假如明天不下雨，我們將去天安門廣場看升旗。這是if引導(dǎo)的條件狀語從句，主句用一般將來時(shí)，從句用一般如今時(shí)，即“主將從現(xiàn)，結(jié)合句意，所以答案為C。3. D。句意：我的父母總是擔(dān)憂假如我失敗了，會(huì)發(fā)生什么事情。這是if引導(dǎo)的條件狀語從句，主句用一般將來時(shí)，從句用一般如今時(shí)，即“主將從現(xiàn)，所以答案為D。二、用所給詞的適當(dāng)形式填空1. feel; will have 2. will; see; has 3. are; will be 4. will dress; doesnt work5. lives; will keep 6. will buy; is 7. will fight; argue 8. will have; need9. will send; goes 10. says; will feel 11. will go; doesnt rain 12. Will; have; is13. will write;