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1、Unit 10,If you go to the party, youll have a great time!,if 引导的条件状语从句，表示对未来的一种假设，可位于主句之前或之后。在if 引导的条件状语从句中，若主句用一般将来时，从句要用一般现在时表示将来。如： She will come if you invite her. 如果你请她，她会来的。,Grammar,在when, as soon as, after, before 等引导的时间状语从句中，如果主句为一般将来时，从句要用一般现在时表示将来。如： I will call you as soon as I reach Canad
2、a. 我一到加拿大就给你打电话。,从句,主句,主句,从句,（一般现在时）,（一般将来时）,（一般现在时）,（一般将来时）,主将从现,If you do, youll be late.,Youll be late if you do.,if 条件状语从句,if 条件句不一般，几个要点记心间； 条件句，放在前，逗号要居中间； 条件句表可能，主句多用将来时； 条件句表事实，主句常用现在时。,有关if条件状语从句的口诀,If you do, the teacher wont let you in.,I think Ill wear jeans to the party.,If you do, youl
3、l be late.,I think Ill take the bus to the party.,I think Ill stay at home.,If you do, youll be sorry.,If you do, youll have a great time.,I think Ill go to the party with my friends.,will have a great time.,If you go to the party, you,have a great time,have a great time 意为“玩得愉快”，相当于enjoy oneself, h
4、ave fun, have a good / wonderful / nice time。如： They had a great time in the zoo. 他们在动物园玩得很愉快。,完成句子，每空一词。 他们假期玩得很开心。 They _ _ _ _ during the vacation.,had a great time,have a great / good time in (doing) sth. 做某事很开心,We had a good time (in) playing tennis. 我们打网球打得很开心。 The children had a great time pl
5、aying football. 孩子们踢球踢得很开心。,If you go to the party, you will have a great time.,这是一个含有if引导的条件状语从句的复合句。主句用将来时或含有情态动词的句子，从句的将来时用现在时表示。如： If you study hard, you can pass the examination. 如果你努力学习，你就能通过考试的。,What will happen if you dont finish your homework?,If I dont finish my homework, the teacher will
6、be angry with me.,Number 1,If you are rich, what will you do?,If I am rich, I will buy a big house. ,Number 3,If I see the accident (事故), I will ,Number 4,If he comes ,what will you do?,If he comes, I will give him some flowers.,Number 5,If I _, I _ an A.,Number 6 看图完成句子,study hard,will get,Number 7
7、,give it to the teacher use up(用完) the money,If you find a wallet (钱包) on the ground, what will you do?,If I _a wallet on the ground, I _.,find,will give it to the teacher,a. Im going to eat and drink more. b. I will be fatter. If I eat and drink more, I will be fatter.,Number 8 用 if 合并为一句话,I will h
8、ave a good time tomorrow.,I will go to the party tomorrow.,If I go to the party, Ill have a good time.,Lets learn!,If it is this weekend, I will ,read at home go to the park / museum / cinema play football visit my grandparents ,当主句是一般将来时时，if 引导的从句必须用 现在时来表示将来可能发生的动作或存在的状态。 If it is sunny tomorrow,
9、we will go to the park. 如果明天天气好,我们就去公园。 If the rain stops tonight, we will go to the cinema. 如果今晚雨停了，我们就去电影院。 If she is kind to me, I wont argue with her. 如果她好好对我，我就不跟她吵。,if 引导一个条件状语从句,当主句是一般现在时 (包含祈使句和含情态动词can, may, must等的句子)，从句也用一般现在时。 You must see the doctor if you are ill. 如果你生病了，你必须去看医生。 If you
10、 want to go skating, wear warm clothes. 如果你想去滑冰，穿上暖和点的衣服。,Its your turn now!,1. Im sure if he _ (go) to the party, he _ (have) a great time. 2. Ill buy a computer if I _ (have) enough money. 3. You _ (not get) nervous if you _ (do ) enough exercise.,goes,will have,have,wont get,do,Fill in the blanks
11、 using the correct forms of the words.,4. Please let us know if he _ (arrive) tomorrow. 5. Shall I say “Hello” if the foreigner _ (come) into the classroom? 6. Hell get better grades if he _ (study ) hard.,arrives,comes,studies,中考链接,【2012福建福州】 Well go for a picnic if it _ this Sunday. Wish you a lov
12、ely weekend. A. rain B. doesnt rain C. wont rain,B,【答案】选B。 【解析】考查if 引导的条件状语从句。当主句是一般将来时，if引导的条件状语从句应该用一般现在时。句意为“如果这个星期天不下雨的话，我们进行野餐”。故选B。,If you go to a party, what will you do?,sing a song,dance,play the guitar,eat food,chat with friends,visit old peoples home,clean up in the school,childrens hospi
13、tal,单项填空 Mrs. Black will come to help us if she _ too busy tomorrow. A. is B. will be C. wont D. isnt,答案：选 D 题意：如果布莱克夫人明天不是很忙的话，她会来帮助我们。在if引导的条件状语从句中，若主句用一般将来时，从句要用一般现在时表示将来。根据题意可知选 D。,He will go out with you after he _ his homework. A. finishes B. will finish C. is finishing D. finish,答案：A 在after 引
14、导的时间状语从句中，主句用一般将来时，从句用一般现在时表示将来；he为第三人称单数，故选A。,【2011北京】 I will send you an e-mail as soon as I _ in Canada. A. arrive B. arrived C. am arriving D. will arrive,【解析】考查点：本题考查状语从句的时态的用法。当主句是将来时态时，状语从句用一般时态来代替将来时，所以选择答案A。,【2011陕西】If there _ no buying and selling of animals, there _ no killing in nature.
15、A. is; will be B. will be; will be C. is; is D. will be; is,【解析】考查点：本题考查if引导的状语从句的时态。if 意为“如果”，引导条件状语从句，主将从现。故选A。,【解析】考查 if 引导的条件状语从句。当主句是一般将来时，if引导的条件状语从句应该用一般现在时。句意为“如果这个星期天不下雨的话，我们进行野餐”。故选B。,【2012福建福州】 Well go for a picnic if it _ this Sunday. Wish you a lovely weekend. A. rain B. doesnt rain C. wont rain,【2012四川雅安市】 If a polar bear_, it _ fish from the water. A. will be hungry; catches B. is hungry; will catch C. is going to be hungry; catches D. is hungry; wont catch 【答案】B,Language points,1. keep to oneself 保守秘密 Dont
