初二上册英语语法精讲名补教案 Unit10 if引导的条件状语从句

1、.*;初二上册暑假英语补习班名补教案目的进步班 名师培优精讲【教学标题】 if条件状语从句【教学重点】if条件的理解及用法；条件状语从句通常由连词if引导。【教学难点】if引导的条件状语从句“主将从现；正确区分if引导的条件状语从句和if引导的宾语从句【进门得分】一、单项选择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【教学内容】一、概念 连词if的意思是“假如，它引导的句子表示某事发生所需要的条件，即“在条件下某事才能发

5、生，在句子中充当状语，因此我们称之为条件状语从句。在复合句中连词if引导的句子为从句，被修饰的句子为主句。从句可以放在主句后，也可以放在主句前，从句放在主句前时，应用逗号将它与主句隔开。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，我们就去长城。二、用法 1. 条件状语从句通常由连词if引导，意为“假如，假设，主句不能用be going to 表示将来，而应该用shall或will。例如： If

6、Im free tomorrow, Ill go with you. 假如我明天有空，我将会和你一起去。 2. if引导的条件状语从句，主句用一般将来时，从句那么用一般如今时，即“主将从现。例如： If it is sunny tomorrow, Ill climb the hill. 假如明天天气晴朗，我将去爬山。 3. 正确区分if引导的条件状语从句和if引导的宾语从句。 在条件状语从句中，if表示“假如；而在宾语从句中，if表示“是否。可以用下面的方法区分： 1 从句前置法：if引导的条件状语从句，可以放在主句之前并用逗号隔开，也可放在主句之后；而if引导的宾语从句只能放在主句之后。因此

7、假如把if放在主句之前，句子通顺，意义不变，那么是条件从句，否那么是宾语从句。例如： He will help you if you ask him. = If you ask him, he will help you. 假如你问他，他会帮助你。 2 whether交换法：if引导宾语从句时，其意为“是否，通常可用whether交换，意义不变，而if引导条件状语从句时不能用whether交换。因此，可用whether交换的是宾语从句，不能交换的是条件从句。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：区分if的用法有着极为重要的意义，因为在条件状语从句中，主句用将来时，从句用一般如今时；而在宾语从句中，当主句是一般如今时，从句可用所需的任何时态，主句是一般过去时，从句用过去的某种时态。【过手练习】真题链接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【拓展训练】二、用所给词的适当形式填空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.【课后作业】三、完成句子1.假如他迟到了，会发生什么事情？What _ _ if he _ late?2. 假如努力学习，你就会获得好成绩。If you_ _, you _ _ good _.3. 他假

13、如看电视太久了，他的父母会不快乐。 If he _ TV too much, his parents _ _ unhappy.4. 假如我们为他举办生日聚会，大家都会来的。Everyone _ _ if we _a birthday party _ him.5. 假如明天不下雨，我会和你一起去公园的。 If it _ _ tomorrow, I _ go to the park _ you.6. 假如她睡过头了，就会误了开会的。 She _ _ _ _ the meeting if she _ _. 7. 假如他有空，他会帮助你的。If he _ _, he _ _ you.8. 假如Tom考

14、试不及格，他就没有时机上高中了。Tom _ miss the chance to go to the high school if he _ the exams.9. 你假如抄同学的作业就不能学好各门功课。You _ _ good at all the subjects if you _ the other students homework. 一、单项选择。1. C。此题是if引导的条件状语从句，主句用一般将来时，从句用一般如今时，即“主将从现，所以答案为C。2. D。根据句意“假如她问我，我就告诉她答案。可知本句是if引导的条件状语从句，主句用一般将来时，从句用一般如今时，从句的主语为单三

15、，动词后加-s，所以答案为D。3. D。条件状语从句，主句用一般将来时，从句用一般如今时，rain在此是实义动词“下雨的意思，故答案为D。4. A。根据“主将从现可知本句答案为A。此题是when引导的时间状语从句。5. B。根据“主将从现可知答案为B。6. C。be going to do，will do都可以表示将来的动作，但只有选项C符合There be句型要求。 7. C。根据“主将从现可知答案为C。8. B。根据“主将从现可知答案为B。9. B。此题考察there be句型的一般将来时，there will be，故答案为B。10. C。根据“主将从现可知答案为C。真题链接1. A。句

16、意：假如晚上不下雨，你会看到很多阿姨在广场上一起跳舞。这是if引导的条件状语从句，主句用一般将来时，从句用一般如今时，即“主将从现，结合句意，所以答案为A。2. C。句意：假如明天不下雨，我们将去天安门广场看升旗。这是if引导的条件状语从句，主句用一般将来时，从句用一般如今时，即“主将从现，结合句意，所以答案为C。3. D。句意：我的父母总是担忧假如我失败了，会发生什么事情。这是if引导的条件状语从句，主句用一般将来时，从句用一般如今时，即“主将从现，所以答案为D。二、用所给词的适当形式填空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;