九年级英语上册 Unit 1 Stay Healthy单元语法归纳课件 （新版）冀教版.ppt

《九年级英语上册 Unit 1 Stay Healthy单元语法归纳课件 （新版）冀教版.ppt》由会员分享，可在线阅读，更多相关《九年级英语上册 Unit 1 Stay Healthy单元语法归纳课件 （新版）冀教版.ppt（10页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、单元语法归纳,情态动词一、情态动词的定义 情态动词表示说话人对动作的态度,比如:需要、可能、意愿、猜测 或者怀疑等。情态动词本身有一定意思,但不完全,不能单独作谓语, 必须与动词原形连用。没有人称和数的变化。二、need的用法need意为“需要”1.作为情态动词:常用于疑问句和否定句无人称和时态的变化疑问 或否定借助于need本身后跟动词原形。,2.作为实义动词:有人称和时态的变化(needs,needed)疑问或否定借 助于do可有自己的宾语(可以是名词、代词、不定式)不受什么句型 限制。 肯定句:我现在需要去那。I need go there now.(need为情态动词)I need t

2、o go there now.(need为实义动词) 否定句:现在你不必去那。You neednt go there now.(need为情态 动词) You dont need to go there now.(need为实义动词) 一般疑问句:我现在需要去那吗?Need I go there now?(need为情态动 词)Do I need to go there now?(need为实义动词),3.对need引起的一般疑问句的回答:Need I go now?Yes,you must./No,you neednt.,三、should的用法 should意为“应该”,否定形式should

3、nt=should not;should作为情 态动词,通常用来表示现在或将来的责任或义务,这时它可以和 ought to,be supposed to互换使用。1.表“劝告,建议”,如:Children should be taught to tell the truth. 应该教导孩子讲实话。2.表“惊异”,意为“竟然已经”。 Its strange that he should have done such a thing. 奇怪的是,他竟然做了这样一件事。 3.表“可能性”,意为“大概已经”。 They should be there by now,I think. 我想,他们现在该到

4、了。,注意:should作为助动词shall的过去式,可以在间接引语中与第一人称主语搭配,表示过去将来时间。例如:A week ago,I told him that I should(=would) go to Beijing the next day.一个星期以前,我告诉他我第二天就去北京。,一、单项选择( )1.We keep the new traffic law (交通法). A.may B.should C.can D.need( )2.There was plenty of time.She . A.mustnt have hurried B.couldnt have hurri

5、ed C.must not hurry D.neednt have hurried( )3.Id like to buy a new shirt,but I dont know . A.where could buy it B.I should take which C.which I should take D.where can I get it,B,D,C,( )4.“Wheres my umbrella?”“Its fine today.You take an umbrella with you.” A.cant B.neednt C.mustntD.shouldnt( )5.Must

6、 I do the work now? No,you .You may do it later. A.cant B.mustnt C.needntD.shouldnt,B,C,二、句型转换6.I need to buy some apples.(改为否定句) I to buy apples.7.You dont have to go shopping with me.(改为同义句) You shopping with me.8.We should listen to the teacher carefully in class.(改为否定句) We listen to the teacher

7、carefully in class.9.Tony needs to visit his grandparents every Sunday.(改为一般疑问句) Tony to visit his grandparents every Sunday?10.People should shake hands when they meet for the first time.(改为同 义句) People shake hands when they meet for the first time.,dont,need,any,neednt,go,shouldnt,Does,need,are,su

8、pposed,to,( )1.Knives plastic and metals. A.are made ofB.are made from C.are made inD.are made by( )2. is not allowed in public. A.SmokeB.Smoking C.SmokedD.To smoke( )3.Everyone should more exercise to keep healthy. A.doesB.doing C.doD.did,A,B,C,【教师备用】,易错提醒: 1.“由制成”可以看出原材料时,应用短语be made of;看不出原材料的要用be made from。 2.动名词作主语。 3.情态动词后接动词原形。,