Unit10 If you go to the party知识点归纳
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Unit10 If you go to the party, you’ll have a great time!知识点归纳一、if 引导的条件状语从句【考例】If____, I will go. A. he doesn’t come B. he won’t come C. he will come D. he is comingif 引导的条件状语从句。
If是连词,所连接的句子叫条件状语从句,表示假设或条件,意思是 “ 如果…的话”,用法如下:1、表示假设,表示将会发生和可能发生的事,或进行提醒警告。
if条件句:条件句用于陈述语气,表示假设的情况可能发生,其中if 是“如果”的意思。
构成条件从句主句时态If+一般现在时,主语+shall/will+动词原形例句If he comes,he will take us to thezoo.用法:(1)条件状语从句通常由连词if引导,意为“如果、假如”,主句不能用be going to表示将来,而应该用shall,will如: If you go to the party, you will meet Uncle Zhang.I’ll ask the teacher for help if I don’t understand. (2)if “如果”,引导条件状语从句,主句用一般将来时,从句则用一般现在时。
如:If it rains tomorrow, we won’t go there. 如果明天下雨,我们就不去那了。
(3)若主句是祈使句,if引导的条件状语从句仍用____________时态。
Put up your hand if you have any questions to ask.注意:宾语从句中的if与条件状语从句if的区别。
宾语从句中的if“是否”相当于 whether,引导宾语从句,时态需根据语境确定。
如:I don't know if it will rain tomorrow. 我不知道明天是否会下雨。
2. 表示真实条件、客观真理、自然现象、定理定义、民间谚语等,句型是:If + 句子(一般现在时),+ 主句(一般现在时). 例: If you study hard ,you are sure to succeed . If you put ice in a warm place ,it turns into water .针对练习:( )1There is going to ______a soccer match next Sunday. If it ___, we’ll haveto cancel(取消) it. a. be; will rain b. have; will rain c. be; rains d. have; rains( )2.If she ___harder, she will catch up with us soon. a. study b. studies c. will study d. studied( )3.I don’t know if he __________ to the party. If he _________, I’ll tell you.a. comes; comesb. will come; will comec. comes; will comed. will come; comes( )4. If you don’t go to the party this Friday, ____.a. he will, toob. he won’t, eitherc. he does, tood. he doesn’t, either二、用所给动词的适当形式填空1. We ____________ (not go) for a picnic if it rains this Sunday2. You may go swimming if you _____________ (finish) your homework.3. They’ll go hiking if it ____________ (not snow) tomorrow.4. Your mother ____________ (be) angry with you if you don’t do your homework.5. I want to know if he ___________ (come) to the party tomorrow evening6. Water park is a good place ___________ (have) fun.7. Half the students ____________ (come) from countryside.8. Half of her money ___________ (spend) on clothes.9.- ---I feel hungry. ----why not ___________ (have) dinner with us?10. If she ____________ (not take) a bus to school tomorrow, she____________ (be) late二、be doing, be going to do和will 在表示将来时的区别:1.will/shall+动词原形 2、be going to do表示将来【注意】“be going to do”和”will/shall+动词原形”区别在于,前者表示事先考虑好的意图,而后者则表示未经事先考虑的意图。
I am going to play games this afternoon./ It will rain tonight. 3.be doing表将来时表示转移的动词leave, go, come, start等进行时态表将来的时候,时常伴有意图,安排或打算的含义。
She is flying to Wuhan tomorrow.典型例题I think I’m going to the dance with Karen and Ann. 我想我会和Karen and Ann一起跳舞。
what are you doing for vacation? 你假期里要做什么? If you do, the teachers will call your parents.如果你那样做,老师们将给你们的父母打电话。
针对性练习:1 __you __a doctor when you grow up? A Will; going to be B Are; going tobe C Are; / D Will; be 2 I don’t know if his uncle _____. I think he _____ if it doesn’t rain.A will come; comesB will come; will comeC comes; comesD comes; will come3 He will be back _____a few minutes. A with B for C on D in4 What time _____we meet at the gate tomorrow? A will B shall C do D are5 There __some showers this afternoon. A will be B will have C is going to be D are going to have6 It ____my brother’s birthday tomorrow. She _____a party.A is going to be;will haveB will be;is havingC will be;is going to haveD will have; is going to be三:情态动词should 用法should用来提出建议和忠告,后边加动词原形,否定句直接在should后边加not1、作为情态动词,通常用来表示现在或将来的责任或义务,表示“应该,应当”。
2、作为情态动词,可以用来表示有较大可能实现的猜测、推论,表示“可能,该(=will probably) ”The headmaster should arrive soon. They should be home by now,I think.3、表示“竟然” It’s strange that he should be late.4、用在第一人称时,表示征求对方意见 Should I help you with the dinner?5、用于表示某种感情色彩,常用于why,how引起的特殊疑问句或that从句中,表示意外、惊喜、不能理解等意思。
How should I know? 我怎么知道?用should或shouldn’t填空1. I can’t sleep the night before exams. You ______ take a warm shower before you go to bed.2. Good friends ______ argue each other.3. There is little milk in the glass.We _______ buy some.4. They didn’t invite you? Maybe you ______ be friendlier.四、重点难点分析1、If you go to the party , you’ll have a great time! have a good (great) time = have fun = enjoy oneself2、Half the class won’t come. (1)half adj. 一半的,半个的。
1)Half the class won’t come.有一半的学生一会来。
2)Half (of) the money is his.有一半的钱是他的。
3)Half (of) them are workers.他们当中有一半中工人。
表示“一半的……”可以用half + n. 或_____________. 其谓语动词取决于后面的名词或代词的形式。
4)Half of the boys _________ (come)to school by bike every day.(2) class 集体名词,全班同学,是复数概念。