初中英语——If引导的条件状语从句(整理版)
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在句子中做条件状语的从句称为条件状语从句。引导条件状语从句的连接词有：if ,unless,as/so long as，once等
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.
如果没有水会怎样
引导的条件状语从句You will fail in English unless you work hard.
/so long as引导的条件状语从句So long as you're happy,i will be happy.引导的条件状语从句Once you begin,never stop.
提示：在条件状语从句中，用一般现在时代替一般将来时，用一般过去时代替过
if 条件状语从句的时态练习
二、用所给词的适当形式填空
you ________(feel) tired, you _______________ (have) to have a rest.
2. Where _______ 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.
twins ______________(fight) if they_______________(argue).
8. I ____________(have) a bake sale if I _____________(need) money for education.
9. Peter _____________( send) me a beautiful souvenir if he ________________(tour) Spain.
10. If Mr Green ___________(say) I am hard- working, my parents _________( feel) glad.
____________(go) to the beach if it________________ ( not rain) this week.
12. __________they __________( have) a match if the . teacher _____________(be) busy ____(write) 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.
15.如果他到的晚了会发生什么事情What _______________ if he _____________ late
16. 如果努力学习，你就会取得好成绩。
If you__________ _________, you ___________ good _____________.
17. 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.
18. 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.
19. 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.
20. 如果她睡过头了，就会旅游迟到的。
She;__________________________ the trip if she ___________________.
21. 如果他有空，他会帮助你的。
If he _________________, he _________________ you.
22. 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.
23. 你如果抄同学的作业就不能学好各门功课。
You _______ _____ good at all t he subjects if you ______ the other students’ homework.