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1、If you go to the party, you will have a great time!,If it is cloudy this weekend, they will go fishing,If it is What 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 happy,your eyes _. (hurt),wi
2、ll be hurt,If you play computer games all day.,If he always _ (watch TV ), he_ (bored).,watches TV,will be bored,If 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 桥 大 学,If we work harder,our dreams will com
3、e true.,if 引导的条件状语从句,时态主将从现,主句一般将来时，从句一般现在时,例句如果你努力工作，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,If it rains tomorrow,I wont go out for a walk.,If 引导条状语从句时，从句中用一般现在时代替一般将来时。,If he _(go) to the movies,he wont finish his work.,goes,If I _(become) a doctor,I can help others.
4、,become,If we _(have )time, we will go to the park tomorrow.,have,如果你去， 我也去。,If you go,I will go.,如果明天下雨，请带雨衣。,Please take a raincoat if it rains.,1. If (如果) 引导的条件状语从句, 主句用一般将来时,从句用一般现在时.（主将从现） I wont go by plane if it rains tomorrow. If you dont hurry , youll miss the train. 注意:从句放在主句之前或主句之后.如放在主句之
5、前,要用逗号与主句隔开.,If引导的宾语从句,常译为是否,应注意时态变化. I dont know if he will come tomorrow.,if 引导的条件状语从句,If 后紧跟的句子叫从句,另一个句子叫主句, 主句和从句次序可以互相调换。 If you study hard, youll get good grades.,Youll get good grades if you study hard.,if 引导的条件状语从句,“主将从现”不仅在if条件句,也用在其它时间状从: （1）until引导的时间状语从句 The bus wont start until everybod
6、y gets on . 公共汽车直到每人都上车为止，才开动。 （2）as soon as （一就）引导的时间状语 Mike will tell you as soon as he comes . Mike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, heavier,If she doesnt exercise enough, she will be heavier.,1.主将从现,if 引导的条件
7、状语从句,If he cleans the room , he can get $10 from his mother . If I watch TV late , I cant get up early . If you get up late , you must take a bus to school .,if 引导的条件状语从句,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
8、句,2.主句含有情态动词,结论: If 引导的条件状语从句中: 从句用一般现在时态; 主句有三种情况 一般将来时态 含情态动词的 祈使句,if 引导的条件状语从句,if 引导的条件状语从句,unless 除非,非不可, 表强烈的否定 You will fail unless you work harder . 你不努力就会失败的。 Dont come unless I call you . 我不叫你就别来 注意: unless表示否定,从句的谓语要用肯定式 误 : Unless you dont work hard ,you will fail . 正 ：Unless you work har
9、d ,you will fail . 正 ：If you dont work hard ,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 o
10、n the party.,Yours,will be,doesnt,give,wont be,Ill go to the party. And I think if I will give you a ,Please help me correct the sentences.,Rose,Correct and Write,1.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 yo
11、u sing well.,are,will become,will be,If they have the party, ( 他们会玩 得高兴)_ 2. If you get up late, ( 你会上学迟到) _ 3.If you dont go to school, (你父母会 担心)_ 4.If we finish our homework on time, (老师会让我们踢球) _ _,they will enjoy themselves.,you will be late for school.,your parents will be worried.,our teacher w
12、ill let us play football.,Exercises,The students will go to the Summer Palace if it _ (not rain) tomorrow. If he _(walk) to school, hell be late. If she likes it, she _ (read) it soon. If you play computer games on weekdays, you _ (be) tired.,doesnt rain,walks,will read,will be,5. If you _(work) har
13、d, your 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,have,work,1.Im sure if he _(go) to the party, he_ (have) a great
14、 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.,goes,will have,stops,have,wont get,do,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 _(
15、come) tomorrow, if he _(come), I _(give) the massage to him. 7.If you _(pay) more attention to that, he _ (not get) injured.,is,wont argue,will come,comes,will give,wont get,pay,Exercise,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. doesnt B. wont C. isnt D. dont 3.If he_ here tomorrow, Ill meet him. A. come B. will come C. c
