八上unit10复习课件.ppt
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1、Unit 10If 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。在假设,可位于主句之前或之后。在if 引导的条引导的条件状语从句中,若主句用一般将来时,从句要件状语从句中,若主句用一般将来时,从句要用一般现在时表示将来。如: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。如果你请她,她会来的。在在when,as soon as,after,before 等引导的等引导的时间状语从句中
2、,如果主句为一般将来时,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:从句要用一般现在时表示将来。如:I will call you as soon as I reach Canada.我一到加拿大就给你打电话。我一到加拿大就给你打电话。(一般现在时)(一般现在时)(一般将来时)(一般将来时)(一般现在时)(一般现在时)(一般将来时)(一般将来时)主主将将从从现现 If you do,youll be late.Youll be late if you do.if 条件状语从句条件状语从句 if 条件句不一般,几个要点记心间;条件句不一般,几个要点记心间;条件句,放在前
3、,逗号要居中间;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;条件句表可能,主句多用将来时;条件句表事实,主句常用现在时。条件句表事实,主句常用现在时。有关有关if条件状语从句的口诀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,youll 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
4、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,youhave a great time have a great time 意为意为“玩得愉快玩得愉快”,相当于相当于enjoy oneself,have fun,have a good/wonderful/nice time。如:。如:They had a great time in the zoo.他们在动物园玩得很愉快。他们在动物园玩得很愉快。完成句子,每
5、空一词。完成句子,每空一词。他们假期玩得很开心。他们假期玩得很开心。They _ _ _ _ during the vacation.had a great timehave a great/good time in(doing)sth.做某事很开心做某事很开心We had a good time(in)playing tennis.我们打网球打得很开心。我们打网球打得很开心。The children had a great time playing football.孩子们踢球踢得很开心。孩子们踢球踢得很开心。If you go to the party,you will have a gr
6、eat time.这是一个含有这是一个含有if引导的引导的条件状语从句条件状语从句的复的复合句。主句用将来时或含有情态动词的句合句。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: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。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 be angry
7、 with me.Number 1Number 1 If you are rich,what will you do?If I am rich,I will buy a big house.Number 3Number 3If I see the accident(事故事故),I will Number 4Number 4If he comes,what will you do?If he comes,I will give him some flowers.Number 5Number 5If I _,I _ an A.Number 6Number 6看图完成句子看图完成句子study ha
8、rdwill getNumber 7Number 7give it to the teacher use up(用完用完)the moneyIf you find a wallet(钱包钱包)on the ground,what will you do?If I _a wallet on the ground,I _.findwill 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 8Number
9、8用用 if 合并为一句话合并为一句话I will have a good time tomorrow.I will go to the party tomorrow.If I go to the party,Ill have a good time.合并合并Lets learn!If it is this weekend,I will read at homego to the park/museum/cinemaplay footballvisit my grandparents当主句是一般将来时时,当主句是一般将来时时,if 引导的从句必须用引导的从句必须用现在时来表示将来可能发生的动作
10、或存在的状现在时来表示将来可能发生的动作或存在的状态。态。l If it is sunny tomorrow,we will go to the park.如果明天天气好如果明天天气好,我们就去公园。我们就去公园。l 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。如果今晚雨停了,我们就去电影院。l If she is kind to me,I wont argue with her.如果她好好对我,我就不跟她吵。如果她好好对我,我就不跟她吵。if 引导一个条件状语从句引导一个条件状语从句当主句是一般现在时当
11、主句是一般现在时(包含祈使句和包含祈使句和含情态动含情态动词词can,may,must等的句子等的句子),从句也用一般现,从句也用一般现在时。在时。l You must see the doctor if you are ill.如果你生病了,你必须去看医生。如果你生病了,你必须去看医生。l If you want to go skating,wear warm clothes.如果你想去滑冰,穿上暖和点的衣服。如果你想去滑冰,穿上暖和点的衣服。1.Im sure if he _(go)to the party,he _ (have)a great time.2.Ill buy a compu
12、ter if I _(have)enough money.3.You _(not get)nervous if you _(do)enough exercise.goes will havehave wont getdoFill in the blanks 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 i
13、f he _(study)hard.arrives comesstudies【2012福建福州福建福州】Well go for a picnic if it _ this Sunday.Wish you a lovely weekend.A.rain B.doesnt rain C.wont rainB【答案答案】选选B。【解析解析】考查考查if 引导的条件状语从句。当主引导的条件状语从句。当主句是一般将来时,句是一般将来时,if引导的条件状语从句应引导的条件状语从句应该用一般现在时。句意为该用一般现在时。句意为“如果这个星期如果这个星期天不下雨的话,我们进行野餐天不下雨的话,我们进行野餐”。
14、故选。故选B。If you go to a party,what will you do?sing a songdanceplay the guitareat foodchat with friendsvisit old peoples homeclean up in the schoolchildrens hospital 单项填空单项填空 Mrs.Black will come to help us if she _ too busy tomorrow.A.is B.will be C.wont D.isnt答案:选答案:选 D 题意:题意:如果布莱克夫人明天不是很忙的话,如果布莱克夫人明
15、天不是很忙的话,她会来帮助我们。在她会来帮助我们。在if引导的条件状语从句中,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:答案:A 在在after 引导的时间状语从句中,引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主句用一般将来时,从句用一般现在时表示将来;将来;he为第三人称
16、单数,故选为第三人称单数,故选A。【2011北京北京】I will send you an e-mail as soon as I _ in Canada.A.arrive B.arrived C.am arriving D.will arrive【解析解析】考查点:本题考查状语从句的时态考查点: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,所以选择答案一般时态来代替将来时,所以选择答案A。【2011陕西】陕西】If there _ no buying and selling of animals,there _ no
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