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初中英语――条件状语从句(讲解&练习)
Ⅰ条件状语从句的定义 Ⅱ条件状语从句的引导词 1.if引导的条件状语从句
表示在某种条件下某事很可能发生。
If we pay much attention to the earth, we'll have a better world. 如果我们多关爱地球,就会拥有一个更美好的世界 If it rains tomorrow, what shall we do? 如果明天下雨,我们怎么办?
注意:if还可以引导虚拟条件句,表示不可实现的条件,从句中多用一般过去时或过去完成时。
What would happen if there were no water ? 如果没有水会怎样? 2.unless引导的条件状语从句
unless的意思是如果不,除非。可与if...not互换。 You will fail in English unless you work hard. 你英语考试会不及格的,除非你更加努力。 3.as /so long as引导的条件状语从句 as /so long as意思是“只要”
So long as you're happy,i will be happy.
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只要你高兴,我就高兴。 Ⅲ条件状语从句的种类 Ⅳ条件状语从句的时态原则 注意 :
学习\引导的条件状语从句的用法,现在总结一下: if 条件句不一般,几个要点记心间;
条件句 从句 主句 一般将来时 条件句,放在前, 逗号要放
真实 一般现在时 情态动词+动原 祈使句 非真实 一般过去时 be动词用(were) would/could+动原 句中间。
条件句表真实,主将从现要遵从; 条件句非真实,虚拟语气用到位。
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练习 Ⅰ.单项选择
( )1.If you _____ to the party, you’ll have a great time.
A. will go B. went C. go D. going
( )2. I ____ her the answer if she ____me.
A. can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks
( )3. – What are you going to do tomorrow? --We’ll go to the library tomorrow if it ___.
A. isn’t rain B. rain C. won’t rain D. doesn’t
rain
( )4. What will you do if you _____ to the old folk’s home?
A. go B. went C. going D. will go
( )5.I’ll give the book to him if he ___ here next Sunday.
A. will come B. comes C. is coming D. came
Ⅱ.用所给词的适当形式填空
6..If you ________(feel) tired, you _______________ (have) to have a rest. 7. Where _______ he _________(see) the film if he ________________(have) time? 8. If there __________(be) fewer trees, there _______________( be) more pollution. 9. If Marcia _____________(live) alone, she ___________________( keep) a pet parrot.
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11. Lana ________________( buy) a new dress if the old one ____________(be) out of style.
12.The twins ______________(fight) if they_______________(argue).
13. I ____________(have) a bake sale if I _____________(need) money for education. 14. Peter _____________( send) me a beautiful souvenir if he ________________(tour) Spain.
15. I ____________(go) to the beach if it________________ ( not rain) this week. 17. __________they __________( have) a match if the P.E. teacher _____________(be) busy?
18. If she ____________(get) up late, she _____________ ( not catch) the early bus. Ⅲ.翻译下列句子
19..如果他到的晚了会发生什么事情? What _______________ if he _____________ late? 20. 如果努力学习,你就会取得好成绩。
If you__________ _________, you good marks. 21. 他如果看电视太久了,他的父母会不高兴。
If he _________ TV too much, his parents __________ __________ unhappy. 22. 如果我们为他组织生日聚会,大家都会来的。
Everyone ________________ if we _____________ a birthday party __________ him. 23. 如果明天不下雨,我会和你一起去公园的。
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If it __________ __________ tomorrow, I ______________ go to the park _________ you.
24. 如果她睡过头了,就会旅游迟到的。
She;__________________________ the trip if she ___________________. 25. 如果他有空,他会帮助你的。
If he _________________, he _________________ you. 26. 如果Tom考试不及格,他就没有机会上高中了。
Tom _________have the ________to go to the ________high school if he ________ the exams.
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初中英语语法——If引导的条件状语从句(讲解及练习)
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