初中英语语法If引导的条件状语从句.docx
初中英语语法If引导的条件状语从句初中英语条件状语从句 条件状语从句的定义 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. 只要你高兴，我就高兴。 条件状语从句的种类 条件状语从句的时态原则 条件句 从句 主句 一般将来时 真实 一般现在时 情态动词+动原 祈使句 一般过去时 非真实 would/could+动原 be动词用 注意 ： 学习" if " 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,放在前, 逗号要放句中间。 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。 练习 .单项选择 1.If you _ to the party, youll 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? -Well go to the library tomorrow if it _. A. isnt rain B. rain C. wont rain D. doesnt rain 4. What will you do if you _ to the old folks home? A. go B. went C. going D. will go 5Ill give the book to him if he _ here next Sunday. A. will come B. comes C. is coming D. came .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. 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. .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。 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.
