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IfsentencesUnit Two Adverbial clause of condition条件状语从句条件状语从句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 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 _, _.IF SENTENCES (1) If sb does sth, sb will do sth = sb will do sth if sb does sth 主句（将来时）主句（将来时）从句（一般现在时）从句（一般现在时）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语的行为将导致某种可能发生的结果时主将从现主将从现IF SENTENCES (1) If sb does sth, sb will do sth = sb will do sth if sb does sth 主句（将来时） 从句（一般现在时）A：actions having results that will probably happen(2)主句为祈使句或情态动词形式主句为祈使句或情态动词形式If sb does sth, please do sthIf sb does sth, sb may(情态动词情态动词) do sthEXERCISES: CHANGE 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, 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 does sth主句（一般现在时）主句（一般现在时） 从句（一般现在时）从句（一般现在时）B：actions having results that will certainly happen相当于相当于when从句从句Can if be replaced by other words?主语的行为将导致某种必然发生的结果时主语的行为将导致某种必然发生的结果时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 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.条件状语丛句只有IFSENTENSES一种吗？C：Unless： sb will do sth unless sb does sth if sb does not do sthEg: You will be late for school you now. You will be late for school you now.unlessleavedont leaveifUNLESS SENTENCES EXERCISES1.have toothache, clean your teeth regularly2.get very hot, put the air-conditioner on soonUnless you clean your teeth regularly, you will have toothacheIf you dont clean your teeth regularly, you 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) 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 dont hurry up, you _ catch the early bus.7.Study hard, or youll 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 dont know if it_ tomorrow. If it _ ,I wont go shopping. (rain)dropbreakswill faildoesnt studyleavewill bewill haverainscoolturnsIfwontunlesswill orwouldntunlesswill rainrains
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