If…sentences

1、IfsentencesChapter sixAdverbial clause of condition條件狀語(yǔ)從句Henry: I cant fly it.Carol: If you put on another wing, it will fly.Pair work:Carol is giving advice to Henry. If you were Carol and Henry, what should you say to each other?I feel cold.I am so hot.I cant see clearly.The meat will go bad.1. If

2、 I pass my exams, Ill leave school.2. If I leave school, Ill get a job.3. If I get a job, Ill work as a _.4. If I work as a _, _.5. If I _, _.6. If I _, _.7. If I _, _.8. If I _, _.Group WorkIf sentences (1) If sb does sth, sb will do sth = sb will do sth if sb does sth 主句（將來(lái)時(shí)）從句（一般現(xiàn)在時(shí)）A：actions hav

3、ing results that will probably happen主語(yǔ)的行為將導(dǎo)致某種可能發(fā)生的結(jié)果時(shí)主將從現(xiàn)If sentences (1) If sb does sth, sb will do sth = sb will do sth if sb does sth 主句（將來(lái)時(shí)）從句（一般現(xiàn)在時(shí)）A：actions having results that will probably happen(2)主句為祈使句或情態(tài)動(dòng)詞形式If sb does sth, please do sthIf sb does sth, sb may(情態(tài)動(dòng)詞) do sthExercises: chan

4、ge the following sentences into if sentencesreturnscallbuypasses1. If she _(return) from Paris, please _(call) me.2. If my husband _ (pass) the test ，we may_ (buy) a car.Exercises: change the following sentences into if sentences3.Get up early, not be late4.Take a fish out of water, die5.Heat metal,

5、 meltIf you get up early, you wont be late .If you heat metal, it meltsreturnscallbuypasses1. If she _(return) from Paris, please _(call) me.2. If he _ (pass) the test ，we may_ (buy) a car.If you take a fish out of water, it dies.If sentences If sb does sth, sb/sth does sth = sb/sth do sth if sb doe

6、s sth主句（一般現(xiàn)在時(shí)） 從句（一般現(xiàn)在時(shí)）B：actions having results that will certainly happen相當(dāng)于when從句Can if be replaced by other words?主語(yǔ)的行為將導(dǎo)致某種必然發(fā)生的結(jié)果時(shí)Exercises: change the following sentences into if sentences3.Get up early, not be late4.Take a fish out of water, die5.Heat metal, meltIf you get up early, you wont

7、 be late .If you heat metal, it meltsreturnscallbuypasses1. If she _(return) from Paris, please _(call) me.2. If he _ (pass) the test ，we may_ (buy) a car.If you take a fish out of water, it dies.條件狀語(yǔ)叢句只有ifsentenses一種嗎？C：Unless： sb will do sth unless sb does sth if sb does not do sthEg: You will be

8、late for school you now. You will be late for school you now.unlessleavedont leaveifUnless sentences exerciseshave toothache, clean your teeth regularlyget very hot, put the air-conditioner on soonUnless you clean your teeth regularly, you will have toothacheIf you dont clean your teeth regularly, y

9、ou will have toothacheUnless you put the air-conditioner on soon , you will get very hot.If you dont put the air-conditioner on soon , you will get very hot.More practice1.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) lat

10、e.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 dont hurry up, you _ catch the early bus.7.Study hard, or youll miss fall behind. _ you study hard, you_ fall behind.8.If you dont put on your scarf, youll catch cold. Put on your scarf, _ youll 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 do