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1、Module 5 ProblemsIf从句（条件状语从句）从句（条件状语从句）Complete the sentences with the correct form of the words.1.If you _(listen) to the music, _ (buy) a CD. 2. If he_ (be) late for school, _ (not wait ) for him.3. If you _ (buy) a new camera, _ (get) a good one. 4. If the light _ (not come) on, _ (wait) for one
2、minute.isbuygetdoesnt comewaitdont wait listenbuy祈使句祈使句+if条件状语从句条件状语从句 if条件状语从句，条件状语从句，+祈使句（从句后加逗号）祈使句（从句后加逗号）if条件状语从句要用一般现在时。条件状语从句要用一般现在时。句型结构句型结构时态时态If 条件状语从句（条件状语从句（1）What will you do if youre happy?vIf Im happy, I will _. vIf Im happy, I will _.vIf Im happy, I will _.vIf Im happy, I will _.clap
3、 my handsstamp my feetwink my eyesnod my headIf Im hungry,I will_. If Im tired, I will_. eat some foodhave a restIf Im ill,_. I will see a doctorIf Im late,_.I will say sorry If it rains tomorrow,I_.will watch TV at homeIf it _ tomorrow,_.Ill play basketballdoesnt rainI wont_.play basketballif条件状语从句
4、条件状语从句(2)句子特点：句子特点：1.if从句中用一般现在时，表示未来的一种条件，从句中用一般现在时，表示未来的一种条件，从句中可以加时间状语。从句中可以加时间状语。2.当当if表示未来的条件时，主句中用一般将来时。表示未来的条件时，主句中用一般将来时。句型结构：句型结构：主句主句+if条件状语从句条件状语从句 if条件状语从句，条件状语从句，+主句（从句后加逗号）主句（从句后加逗号）3.时态时态：if一般现在时，一般现在时，+主句一般将来时或主句一般将来时或（can/ may /must +v.)e.g. 1.If you dont get up early, you will be l
5、ate for school .你如你如果不早点起床，上学就会迟到。果不早点起床，上学就会迟到。2. If I play games on it , it will go wrong .如果我用它玩游戏，它就会坏掉。如果我用它玩游戏，它就会坏掉。3. 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。 4. If you want to lose weight，you must 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。1.If he_ (not,
6、do it ), I_(do) it.2.If you _ (be) late 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.
7、If it _(not,rain) ,I _( go) out.8. we _(play) football, If it is _(sun) .9.If she _(become) a star ,her parents _ (not,send) her away 10.He _(watch) TV ,if he _(be) free.will stayrainsdoesnt rainwill gowill playsunnybecomeswont sendwill watchisdoesnt dowill doif的用法的用法2.引导条件状语从句：引导条件状语从句：译为译为“如果，假如如果
8、，假如”(1) if从句从句+祈使句祈使句(2) if从句从句+主句（一般将来时）主句（一般将来时）1.引导宾语从句引导宾语从句：译为：译为“是否是否”，表示不确定的概，表示不确定的概念。念。I dont know if your father can come together . Can you tell me if miss your parents ?e.g. If I were you , I would invite him to the party .如果如果我是你，我会邀请他参加聚会。我是你，我会邀请他参加聚会。If he had hurried ,he could have
9、caught the train .如果他抓紧点，他会赶上火车的。如果他抓紧点，他会赶上火车的。 If I were to go abroad ,I would go to America.如果我出国了，我会去美国。如果我出国了，我会去美国。3.非真实条件句（虚拟语气）非真实条件句（虚拟语气）：表示不可实现的条件：表示不可实现的条件或根本不存在的条件。或根本不存在的条件。从句多用一般过去时或过去完成时，表示对现在或从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。过去的一种假设。( ) 6. Mike wants to know if _ a picnic tomorrow. Yes
10、. But if it _, well visit the museum instead. A. you have； will rain B. you will have；will rain C. you will have；rains D. will you have； rains ( ) 7. I really dont know if she _ it when she _. A. finds/ arrives B. finds/ will arrive C. will find/ will arrive D. will find/ arrives（ ）4. I dont know if
11、_ tomorrow. A. it doesnt rain B. the rain will stops C. the rains wont stop D. it wont rain（ ）5. The volleyball match will be put off (推迟） if it _. A. will rain B. rains C. rained D. is raining（ ）1. Be careful, if you_ want to make mistakes. A. wont B. dont C. didnt D. not（ ）2. Work hard if you _ to get a good mark. A. wanted B. wanting C. want D. will want（ ）3. -I want to know if you_ to the party tomorrow. - I will if I_ free. A. will come; am B. come; am C. will come; will be D. come; will beexercisesBCADBCD