If…sentences

1. Chapter six Adverbial clause of condition 条件状语从句 If…sentences

2. Pair work: Carol is giving advice to Henry. If you were Carol and Henry, what should you say to each other? Henry: I can’t fly it. Carol: If you put on another wing, it will fly.

3. I feel cold. I am so hot. I can’t see clearly. The meat will go bad.

4. Group Work 1. If I pass my exams, I’ll leave school. 2. If I leave school, I’ll get a job. 3. If I get a job, I’ll work as a ________. 4. If I work as a ________, ________. 5. If I ________, ________. 6. If I ________, ________. 7. If I ________, ________. 8. If I ________, ________.

5. If sentences (1) If sb does sth, sb will do sth = sb will do sthif sb does sth A：actions having results that will probably happen 主语的行为将导致某种可能发生的结果时 主句（将来时） 从句（一般现在时） 主将从现

6. If sentences (1) If sb does sth, sb will do sth = sb will do sthif sb does sth A：actions having results that will probably happen 主句（将来时） 从句（一般现在时） (2)主句为祈使句或情态动词形式 If sb does sth, please do sth If sb does sth, sb may(情态动词) do sth

7. Exercises: change the following sentences into if sentences 1. If she ______(return) from Paris, please ____(call) me. returns call 2. If my husband ______ (pass) the test ，we may____ (buy) a car. passes buy

8. Exercises: change the following sentences into if sentences 3.Get up early, not be late 4.Take a fish out of water, die 5.Heat metal, melt 1. If she ______(return) from Paris, please ____(call) me. returns call 2. If he ______ (pass) the test ，we may____ (buy) a car. passes buy If you get up early, you won’t be late . If you take a fish out of water, it dies. If you heat metal, it melts

9. If sentences B：actions having results that will certainly happen If sb does sth, sb/sth does sth = sb/sth do sth if sb does sth 主语的行为将导致某种必然发生的结果时 主句（一般现在时） 从句（一般现在时） Can ‘if’ be replaced by other words? 相当于when从句

10. Exercises: change the following sentences into if sentences 3.Get up early, not be late 4.Take a fish out of water, die 5.Heat metal, melt 1. If she ______(return) from Paris, please ____(call) me. returns call 2. If he ______ (pass) the test ，we may____ (buy) a car. passes buy If you get up early, you won’t be late . If you take a fish out of water, it dies. If you heat metal, it melts

11. 条件状语丛句只有if…sentenses一种吗？ C：Unless： sb will do sth unless sb does sth if sb does not do sth unless leave Eg: You will be late for school you now. You will be late for school you now. if don’t leave

12. Unless sentences exercises • have toothache, clean your teeth regularly • get very hot, put the air-conditioner on soon If you don’t clean your teeth regularly, you will have toothache Unless you clean your teeth regularly, you will have toothache Ifyou don’tput the air-conditioner on soon , you will get very hot. Unless you put the air-conditioner on soon , you will get very hot.

13. More practice drop breaks doesn’t study will fail leave will be 1.If you ______ drop a glass, it ______ (break). 2.He ______ (fail) in the exam if he ______ (not study) hard. 3.Unless you ______ (leave) now, you ______(be) late. 4.We ______ (have) a barbecue unless it ______ (rain) . 5.If you ____ (cool) water, it _____(turn) into ice. 6.Hurry up, or you will miss the bus. ___ you don’t hurry up, you ____ catch the early bus. 7.Study hard, or you’ll miss fall behind. ______ you study hard, you______ fall behind. 8.If you don’t put on your scarf, you’ll catch cold. Put on your scarf, _____ you’ll catch cold. 9.The insurance company would pay him 2 million yuan if the vase was stolen. The insurance company _____ pay him 2 million yuan _____ the vase was stolen. 10.I don’t know if it_______ tomorrow. If it ____ ,Iwon’t go shopping. (rain) rains will have cool turns won’t If unless will or won’t unless will rain rains