if引导的条件状语从句if1) 用法：(1)条件状语从句通常由连词if引导，意为“如果、假如”，主句不能用be going to表示将来，而应该用shall，will。
If you leave now, you are never going to regret it. (错误)If you leave now, you will never regret it. (正确)(2)if “如果”，引导条件状语从句，主句用一般将来时，从句则用一般现在时，如：If it rains tomorrow, I shan’t climb the hills.(3)另外，主句是祈使句或含有情态动词，从句也用一般现在时。
如：Please call me if he comes next Sunday.Can you call the policeman if you are in the trouble.注意宾语从句中的if与条件状语从句if的区别。
宾语从句中的if“是否”相当于whether，引导宾语从句，时态需根据语境确定。
如果主句用一般现在时，从句可以根据具体情况选用时态，如果主句用一般过去时，从句必须用过去式的某种形式。
I don't know if it will rain tomorrow. 我不知道明天是否会下雨。
Our teacher said there was going to be a football match the next month.我们说下月将有场足球比赛。
【边学边做】用括号内所给词的正确形式填空。
1. What will you buy if you ________（have）a lot of money?2. If it ________（not snow）tomorrow, we will feel unhappy.3. You mustn’t go to school if you ________（be）still in bed.4. If he _______（be）at home at that time, he would know it.5. Please show me the way if you ________（know）it.6. You will hurt your teeth if you ________（eat）too much candy.7. If you gave me a toy car, I _________（be）very happy.8. I would get the prize if I _________（work）hard.9．If she ______ (finish ) work early ,she ______(go) home.10．If the weather______（be）fine，we_______(go)for a walk .11. If I_____(have) time tonight ,I _______(finish) the book I’m reading.12. If it ______(rain) next weekend , we_______(not be able to ) plant the vegetable .13. If it_______(rain),we______(stay) at home .14.If she______(arrive) ,she _____(phone) me .15. If he_____(call),tell him I’ll ring back .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 _____ 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. 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.11. I ______ (go) to the beach if it________ (not rain) this week.12. _____they ___ (have) a match if the P.E. teacher __ (be) busy?13. He ____ (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.二、完成句子1. 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.2. 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.3. 如果他有空，他会帮助你的。
If he ____ ____, he ______ ____ you.4. 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.5. 你如果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.Module5练习题1.If she goes to a different school, I B. won’t see C. see D. saw2.That’s pity! You play B. such a, such C. such a , so D. so a, such3.My teacher says that if I harder, I do well in my exam.A. don’t, willB. won’t, don’tC. won’t, won’tD. don’t, won’t4.He used to ask strange questions after class. (so // such)5.She has children that she didn’t know what to do. A. so B. such C. so many D. such many6.We won’t go fishing if tomorrow. A. it rains B. it will rain C. it would rain D. it rained7.–Tony, don’t play that kind of joke any more. --Sorry! I do it again.A. won’tB. can’tC. mustn’tD. wouldn’t8.–What are you going to do this summer holiday? –I yet.A. haven’t decidedB. won’t decidedC. have decidedD. didn’t decide9.What (happen) if Steve doesn’t tell his father the truth?10.She says she can finish the book next Monday. A. read B. reading C. to read D. reads11.the day, we were tired but happy.A. At the end of B. By the end of C. At the end D. In the end12.you pass me your dictionary? A. Should B. Could C. Need D. Must13.He knows the computer? A. a lot of, about B. a lot, about C. a lot, of D. a lot of, with14.I’m a student, ?(反义疑问句)15.Everything is ready, ?16.I was doing my homework at the library instead of the shelves.A. tidy upB. to tidy upC. to tidying upD. tidying up17. A rich man worry about his next meal.A. needs not toB. needs notC. need not toD. does not need to三用所给词的正确形式填空18.I think you should offer (pay) for the computer.19.He’ll realize that you are (true) sorry.20.Has Steve told his father the (true)?21.It’s (true) that I play a lot of basketball.22.She (攒钱) a lot of money to buy the shoes.23.But if you aren’t honest, she’ll be even (angry) with you.st week, I was doing my homework at the library instead of (tidy) up the shelves.25.They have warned him about ( not work) hard.26.What (happen) if Steve doesn’t tell his father the truth?27.I’m a student, ?(反义疑问句)28.Everything is ready, ?29 What have her parents warned her (not do)? We shall go for a walk rather than (watch) TV.30 I’d rather (stay) at home than (go) out on such a cold day.31The students were tired after they finished四根据首字母提示完成下列句子1. The doctor w__________ me not to drink too much.2. It's a p_______ that you can't come.3. Please wait until the e______ of this month.4. At the end of the term, we’ll have a f________ exam.5. The thief (贼) broke into the house and s_________ a lot of money.6. Can you m_____ my watch? It doesn't work.7. It will cost at l_______ ten dollars.8. There are many books on those s_________.9. H______ up, or you will be late.直接引语&间接引语引述别人的话时，一般采用两种方式：一是引用别人的原话，把它放在引号内，称为直接引语;二是用自己的话加以转述，被转述的话不放在引号内，称为间接引语。