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1、 If it is cloudy this weekend, they will go fishing If it isWhat will they do this weekend?If it is sunny this weekend, they will play volleyball. you _. (tired)will be tired your parents _. (be not happy)will not be happyyour eyes _. (hurt)will be hurtIf you play computer games all day. If he alway
2、s _ (watch TV ), he_ (bored).watches TVwill be boredin the future make a lot of money buy a big houseIf I make a lot of money,I will buy a big house.If I have enough money,I will travel around the world.If I study hard,I will go to college.剑剑 桥桥 大大 学学 If we work harder, our dreams will come true.if
3、引导的条件状语从句引导的条件状语从句时态主将从现时态主将从现主句一般将来时，从句一般现在时例句例句如果你努力工作，你的梦想将会实现如果你努力工作，你的梦想将会实现If you work hard, your dream will come true.例句如果明天下雨，我将不出去散步例句如果明天下雨，我将不出去散步If it rains tomorrow,I wont go out for a walk. If 引导条状语从句时，从句中用一般现引导条状语从句时，从句中用一般现在时代替一般将来时。在时代替一般将来时。If he _(go) to the movies,he wont finish
4、his work.goesIf I _(become) a doctor,I can help others.becomeIf we _(have )time, we will go to the park tomorrow.have如果你去，如果你去， 我也去。我也去。 If you go,I will go.如果明天下雨，请带雨衣如果明天下雨，请带雨衣。Please take a raincoat if it rains.1. If (如果如果) 引导的引导的条件状语从句条件状语从句, 主句主句用一般将来时用一般将来时,从句用一般现在时从句用一般现在时.（主将从（主将从现）现）w I wo
5、nt go by plane if it rains tomorrow.w If you dont hurry , youll miss the train.w 注意注意:从句放在主句之前或主句之后从句放在主句之前或主句之后.如放在如放在主句之前主句之前,要用逗号与主句隔开要用逗号与主句隔开. If引导的引导的宾语从句宾语从句,常译为常译为是否是否,应注意时态变化应注意时态变化. I dont know if he will come tomorrow.If 后紧跟的句子叫从句后紧跟的句子叫从句,另一个句子叫主句另一个句子叫主句, 主句和从句次序可以互相调换。主句和从句次序可以互相调换。 If
6、 you study hard, youll get good grades.Youll get good grades if you study hard.“主将从现主将从现”不仅在不仅在if条件句条件句,也用在其它时间状从也用在其它时间状从:（1）until引导的时间状语从句引导的时间状语从句 The bus wont start until everybody gets on . 公共汽车直到每人都上车为止，才开动。公共汽车直到每人都上车为止，才开动。（2）as soon as （一（一就）引导的时间状语就）引导的时间状语 Mike will tell you as soon as he
7、 comes . Mike一来就会告诉你。一来就会告诉你。 no war, the world, more beautiful,If there is no war, the world will be more beautiful. she, not exercise enough, heavierIf she doesnt exercise enough, she will be heavier.1.主将从现主将从现If he cleans the room , he can get $10 from his mother .If I watch TV late , I cant get
8、up early . If you get up late , you must take a bus to school .If you are sad , please talk with us .If you are hungry , please eat some food .Please call me if he comes next Sunday.3.主句是祈使句主句是祈使句2.主句含有情态动词主句含有情态动词结论结论:If 引导的条件状语从句中引导的条件状语从句中:从句用从句用一般现在时态一般现在时态;主句有三种情况主句有三种情况 一般将来时态一般将来时态 含情态动词的含情态动
9、词的 祈使句祈使句unless 除非除非,非非不可不可, 表强烈的否定表强烈的否定You will fail unless you work harder . 你不努力就会失败的。你不努力就会失败的。Dont come unless I call you . 我不叫你就别来我不叫你就别来 注意注意: unless表示否定表示否定,从句的谓语要用肯定式从句的谓语要用肯定式 误误 : Unless you dont work hard ,you will fail . 正正 ：Unless you work hard ,you will fail . 正正 ：If you dont work ha
10、rd ,you will fail .Dear Jenny, Thanks for inviting me to the party. Of course present, you are happy. I hope it wont rain that day. Because if it wont rain, my little son will come, too. If he comes, you arent disappointed, he is really funny. OK, see you on the party.Yours, will bedoesntgivewont be
11、Ill go to the party. And I think if I will give you a Please help me correct the sentences.Rosev Correct and Write1.用所给词的正确形式填空。用所给词的正确形式填空。1.If you _ (be) late, the teacher will be angry.2.He _(become) a soccer player if he works hard.3. You_(be) famous if you sing well.arewill becomewill be1.If th
12、ey have the party, ( 他们会玩他们会玩2. 得高兴得高兴)_3.2. If you get up late, ( 你会上学迟到你会上学迟到)4. _5.3.If you dont go to school, (你父母会你父母会6.担心担心)_7.4.If we finish our homework on time,8.(老师会让我们踢球老师会让我们踢球)9. _ 10. _they will enjoy themselves.you will be late for school.your parents will be worried.our teacher will
13、let us play football.Exercises1.The students will go to the Summer Palace if it _ (not rain) tomorrow.2.If he _(walk) to school, hell be late.3.If she likes it, she _ (read) it soon.4.If you play computer games on weekdays, you _ (be) tired.doesnt rainwalkswill readwill be5. If you _(work) hard, you
14、r dream will come true. 6. If she _(study) hard, She will go to Beijing University. 7. If it _ ( rainy )tomorrow, I will play the piano.8. If I _(have) much money in the future, I will travel all over the world.studies is rainy havework1.Im sure if he _(go) to the party, he_ (have) a great time.2.If
15、 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.goes will have stopshave wont getdo 用括号内所给词的正确形式填空用括号内所给词的正确形式填空5.If she _ (be) kind to me , I _(not argue) with her.6.I want to know if he _(come
16、) tomorrow, if he _(come), I _(give) the massage to him. 7.If you _(pay) more attention to that, he _ (not get) injured.iswont arguewill comecomeswill givewont getpay选择题：选择题： 1.Who wants to buy the book? Mary_ A. do B. did C. does D. doing 2.They will go to the Great Wall if it _ rain tomorrow. A. d
17、oesnt B. wont C. isnt D. dont 3.If he_ here tomorrow, Ill meet him. A. come B. will come C. comes D. came 4.Im going to Guilin for vacation_ A. Good Bye B. Is that true C. Really D. Have a good time 5.If she likes it, she _it soon. A. read B. reads C. will read D. reading6.If I _much money in the future, I will travel all over the world. A. have B. has C. having D. will have7. If you play computer games on weekdays, you _tired. A. are B. will C. be D. will be 8.If she _ hard, She will go to Beijing University. A. study B. will study C. studies D. is studyingAC DA CC DC
