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1、Unit 10 If you go to the party, youll have a good time!位置：从句可放在主句之前或之后，但是放在主句之前须有从句可放在主句之前或之后，但是放在主句之前须有逗号隔开逗号隔开eg:如果我有足够的钱，我就去环游世界If 引导条件状语从句 定义：定义：if “如果如果, 假如假如” 它引导的句子表示某事发生所需的它引导的句子表示某事发生所需的条件，即条件，即“在在条件下，某事才能发生条件下，某事才能发生”，在句子中充当状语，在句子中充当状语，因此称之为条件状语从句。（因此称之为条件状语从句。（ If引导的条件状语从句表示假引导的条件状语从句表示假如
2、有从句的动作发生，就会有主句动作的发生如有从句的动作发生，就会有主句动作的发生 ）If I have enough money, I will travel around the world =I will travel around the world if I have enough money用法：1. 如果主句是一般将来时，从句则用一般现在时。如果主句是一般将来时，从句则用一般现在时。 If it rains（从句）， I will stay at home. Ill go with you if you dont want to go alone（从句）. 2.如果主句含有如果主句含
3、有must, may, can 等情态动词，从句也要用等情态动词，从句也要用一般现在时。一般现在时。 If you drive too fast, you may have an accident. You must stop if the traffic is red. If you finish the homework， you can go home 如果你作业做完了就可以回家了。如果你作业做完了就可以回家了。 If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。如果你想减肥，你必须少吃面包
4、。v3. 如果主句是祈使句，从句同样要用一般现如果主句是祈使句，从句同样要用一般现在时。在时。Dontgoandplayfootballifyoudontfinishyourhomework.PleasecallmeifhecomesnextSunday.If I If I getget up at 9:00, up at 9:00, If I If I amam late, late, If the teacher If the teacher isis angry with me, angry with me, 在以在以在以在以 if if 引导的引导的引导的引导的条件状语条件状语条件状语
5、条件状语从句，从句，从句，从句， 如果如果如果如果主句主句主句主句是是是是_，那么，那么，那么，那么if if 引导的引导的引导的引导的从句从句从句从句用用用用_来表示将来可能发生的动作来表示将来可能发生的动作来表示将来可能发生的动作来表示将来可能发生的动作或存在的状态或存在的状态或存在的状态或存在的状态, ,也就是所谓的也就是所谓的_。If she If she isis happy happy，she she will playwill play the guitar . the guitar .I I will bewill be late. late.the teacher the t
6、eacher will bewill be angry with me. angry with me.I I will bewill be sad. sad.总结总结 if 引导的条件状语从句引导的条件状语从句 主句和从句时态如何？主句和从句时态如何？一般将来时态一般将来时态一般将来时态一般将来时态一般现在时态一般现在时态一般现在时态一般现在时态.“主将从现主将从现”If I have enough money, I will go for a vacation.If it is hot, I will go to swim.If I go to the zoo, I will see the
7、 animal show.If you go to the party, you will have a great time.If he has free time, he will go for a trip with his students.If I dont have classes tomorrow,I will go to watch the match.If they dont hurry, they will be late for school.If he doesnt get up early,he will be late.If she eats too much,sh
8、e will be very fat.If she watches TV too much,she will get short-sign.If it rains tomorrow,she will study at home.If it is fine tomorrow,we will go on a school trip.vIf I go to the party ,I will come back home late.vIf I come back home late, I wont finish my homework.vIf I dont finish my homework, I
9、 will be free.vIf I am free ,I will go to the party.vIf I go to the party,I willIf Im ill,_. I will see a doctorLook and sayIf Im late,_.I will say sorry If Im hungry,I will_. If Im tired, I will_. Look and sayeat some foodhave a restIf it rains tomorrow,I_.will watch TV at homeIf it _ tomorrow,_.Il
10、l play basketballdoesnt rainI wont_.play basketballIf he plays computer games on weekdays, what will happen? Hell be very tired in class.His parents will be sad.He wont get good grades.If I study hard, I will go to Beijing University.Dont wear jeans! If you wear jeans, we wont let you in.The rules f
11、or school parties. Dont bring food to the party. If you do, the teachers will take it away.Dont bring friends from other schools. If you do, the teachers will ask them to leave.Dont leave the gym during the party. If you do, the teachers will call you parents.Dont run or shout at the party. If you d
12、o, youll have to leave.1. I will watch TV every day. My mother will be angry. If I _TV this weekend, my mother _ _angry.2. He will have a strange haircut. The teachers wont agree. If he _ a strange haircut, the teachers_ _.I. Fill in the blanks with the correct words 用正确的词形填空用正确的词形填空watchwill behasw
13、ont agree1.If it rains tomorrow, we _ visit the museum. A. dont do B .wont go C .arent go D. didnt go.2. Will you go to the park if it _ fine? A. will be B. was C. is D /3. If you _to school late, your teacher _ angry with you. A. come; are B. come, will be C. will come; are D. will come; will be4.
14、If you _ hard, you will _ successful. A. work, are B. works, is C. to work, be D. work, be5. If I _ too much TV, my mother will _. A .watch, angry B .watched, be angry C .watch, be angry D .will watch, be angryBCBDCII. 选择选择练一练：1。如果她早点儿起床，就有时间在家里吃早餐 If she_ _a little earlier, shell have time to eat b
15、reakfast at home.2。如果你参加聚会，你将会过得很开心。If you_ the party ,you_ _ a great time.3。如果明天下雨，我们将不去野餐If it _tomorrow, we _ _ for a picnic.4。如果你经常听英文歌，你将会喜欢英语If you often _ _English songs, you_ _English.gets upjoin will haverains wont golisten to will like1.If he_ (not, do it ), I_(do) it.2.If you _ (be) late
16、for school ,my teacher _(be) angry.arewill be3 If she_ (win) the prize ,we _(be) happy.winswill be4.If I _ (not,eat )so much ,I _(get) thinner.5.If you _(tell) them, they _ (not,believe) you.dont eatwill gettellwont believe6 I _(stay) at home,If it _( rain).7.If it _(not,rain) ,I _( go) out.8.we _(p
17、lay) football, If it is _(sun) .9.If she _(become) a star ,her parents _ (not,send) her away10.He _(watch) TV ,if he _(be) free.will stayrainsdoesnt rainwill gowill playsunnybecomeswont sendwill watchisdoesnt dowill do1.Im sure if he _(go) to the party, he_ (have) a great time.2.If the rain _(stop) tonight, we will go to the cinema.3.Ill buy a computer if I _(have) enough money.4.You _(not get) nervous if you _(do ) enough exercise.6.I want to know if he _(come) tomorrow, if he _(come), I _(give) the massage to him. goes will have stopshave wont getdo comes will come will give
