语法互动八系动词和情态动词.ppt

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1、语法互动（八）系动词和语法互动（八）系动词和情态动词情态动词名名 师师 点点 睛睛名名 师师 点点 睛睛考考 点点 过过 关关考考 点点 过过 关关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词名名 师师 点点 睛睛名师点睛名师点睛考点过关考点过关 系系动动词词不不能能独独立立作作谓谓语语，必必须须与与表表语语一一起起构构成成谓谓语语。情情态态动动词词和和动动词词原原形形连连用用，一一起起构构成成谓谓语语，没没有有人人称称和和数数的的变变化化。常见考点如下：常见考点如下：考点一考点一 系动词系动词常常见见的的系系动动词词有有keep(keep(保保持持),),look(look(

2、看看起起来来),),feel(feel(觉觉得得，摸摸起起来来),),smell(smell(闻闻起起来来),),sound(sound(听听起起来来),),taste(taste(尝尝起起来来),),become/grow/turn/get(become/grow/turn/get(变得变得)等。如：等。如：语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词He always kept silent at meeting.He always kept silent at meeting.他开会时总保持沉默。他开会时总保持沉默。He _ very tired.He _ very ti

3、red.他看起来很累。他看起来很累。This kind of cloth_very soft.This kind of cloth_very soft.这种布摸起来很软。这种布摸起来很软。He became mad after that.He became mad after that.从那之后，他就疯了。从那之后，他就疯了。looks looks feels feels 名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词考点二情态动词考点二情态动词1must的用法的用法(1)(1)在肯定句中表示在肯定句中表示“必须必须”。如：。如：When traf

4、fic lights are red,we must stop and wait.When traffic lights are red,we must stop and wait.红灯时我们必须停下来等。红灯时我们必须停下来等。(2)mustnt(2)mustnt在否定句中表示在否定句中表示“禁止禁止”。如：。如：You You mustnt mustnt play play like like that that any any more.The more.The final final exam exam is coming.is coming.你千万别那样玩了，期末考试要到了。你千万别

5、那样玩了，期末考试要到了。名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词(3)must(3)must表表示示“推推测测”。mustmust用用在在肯肯定定句句中中表表示示较较有有把把握握的的推测，意为推测，意为“一定一定”。如：。如：You have worked hard all day.You must be tired.You have worked hard all day.You must be tired.你辛苦工作一整天了，一定累了。你辛苦工作一整天了，一定累了。(4)(4)由由mustmust引引导导的的一一般般疑疑问问句句，肯肯定

6、定答答语语要要用用mustmust，否否定定回回答用答用neednt/dont have toneednt/dont have to。如：。如：Must we finish the work today?Must we finish the work today?我们今天必须完成这项工作吗？我们今天必须完成这项工作吗？Yes,we must./No,we neednt.Yes,we must./No,we neednt.是的，我们必须。是的，我们必须。/不，我们不必。不，我们不必。名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词(5)must(5)m

7、ust和和have have toto的的区区别别：must must 表表示示说说话话人人的的主主观观意意愿愿，have to have to 表示客观需要。如：表示客观需要。如：I must do my homework first.I must do my homework first.我必须先做作业。我必须先做作业。Its late.I _ go home.Its late.I _ go home.天黑了，我不得不回家了。天黑了，我不得不回家了。2can与与could的用法的用法(1)can(1)can表示表示“能，会能，会”，couldcould是是cancan的过去式。的过去式。如

8、：如：She can speak English and French.She can speak English and French.她会说英语和法语。她会说英语和法语。have to have to 名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词(2)can(2)can和和couldcould都表示都表示“请求许可请求许可”，couldcould语气更委婉。如：语气更委婉。如：Could I have a cup of waterCould I have a cup of water？I am very thirsty.I am very t

9、hirsty.我能喝一杯水吗？我很渴。我能喝一杯水吗？我很渴。(3)cant(3)cant表示表示“否定推测否定推测”。如：。如：Listen!Is Tom singing in the classroom?Listen!Is Tom singing in the classroom?听！是汤姆在教室里唱歌吗？听！是汤姆在教室里唱歌吗？No.It cant be Tom.He has gone to Paris.No.It cant be Tom.He has gone to Paris.不，不可能是汤姆，他去巴黎了。不，不可能是汤姆，他去巴黎了。名师点睛名师点睛考点过关考点过关语法互动（八）

10、语法互动（八）系动词和情态动词系动词和情态动词3had better的用法的用法“had better“had better(not)do”(not)do”意为意为“最好最好(不不)做做。”如：如：You You had had better better _ _ wine wine because because you you have have to to drive back home.drive back home.你最好别喝酒，因为你还要开车回去。你最好别喝酒，因为你还要开车回去。not drink not drink 名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系

11、动词和情态动词系动词和情态动词4need的用法的用法need need 表表示示“需需要要”，多多用用于于否否定定句句和和疑疑问问句句中中，疑疑问问句句的的肯定回答用肯定回答用mustmust，否定回答用，否定回答用needntneednt。如：。如：You You neednt neednt worry worry about about me.me.I I feel feel much much better better now.now.你不必担心我，我现在感觉好多了。你不必担心我，我现在感觉好多了。Need I clean the room now?Need I clean the r

12、oom now?我现在需要打扫房间吗？我现在需要打扫房间吗？Yes,you must./No,you_Yes,you must./No,you_是的，你必须打扫。是的，你必须打扫。/不，你不必。不，你不必。neednt neednt 名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词5may的用法的用法(1)may(1)may意为意为“可以可以”，表示请求或许可。如：，表示请求或许可。如：May I use your pen?May I use your pen?我可以用用你的钢笔吗？我可以用用你的钢笔吗？Sure.Here you are.Sure.

13、Here you are.当然，给你。当然，给你。(2)may(2)may意为意为“也许也许”，表示推测，没有十足的把握。如：，表示推测，没有十足的把握。如：He may come here by bus,Im not sure.He may come here by bus,Im not sure.他也许会乘公交车来这儿，我不确定。他也许会乘公交车来这儿，我不确定。名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词6易错点易错点(1)(1)情情态态动动词词表表推推测测：没没有有十十足足的的把把握握用用may,may,有有十十足足把把握握用用mustm

14、ust，否定推测用，否定推测用cantcant。(2)mustnt(2)mustnt 表示表示“禁止禁止”，并非，并非“不必须不必须”。(3)(3)以以must,need must,need 开头的一般疑问句的回答。开头的一般疑问句的回答。名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词考考 点点 过过 关关1 12013兰州兰州 Look at the boy playing basketball on Look at the boy playing basketball on the ground.Is it George?the ground.

15、Is it George?It _ be him.He told me he would play It _ be him.He told me he would play basketball after class,but hes not sure.basketball after class,but hes not sure.A Amustnt B.mustmustnt B.must C Ccantcant D Dmaymay2 2_I finish my homework now?_I finish my homework now?No,you_.Your work is over t

16、oday.No,you_.Your work is over today.A ACant;must BCant;must BMust;dont have toMust;dont have to C CMay;couldnt DMay;couldnt DCouldnt;couldCouldnt;couldD D B B 名师点睛名师点睛考点过关考点过关语法互动（八）语法互动（八）系动词和情态动词系动词和情态动词3 32013新疆新疆 After a long walk,the old man _ After a long walk,the old man _ be tired now.be ti

17、red now.A Acant Bcant Bmust Cmust Chas to Dhas to Dneedneed4 4Must I finish the homework this afternoon?Must I finish the homework this afternoon?No No，you _.It can be finished before Friday.you _.It can be finished before Friday.A Acant Bcant Bmustntmustnt C Cshouldnt Dshouldnt Dneedntneednt5 5I like soft and gentle music.It _nice.I like soft and gentle music.It _nice.A Atastes Btastes Blooks Clooks Cfeels Dfeels DsoundssoundsB B D D D D 名师点睛名师点睛考点过关考点过关