1、序号序号原形原形过去式过去式主要含义主要含义1cancould2maymight3mustmusthad to4needneeded5daredared6willwould7shallshould“不得不不得不/必须必须”“过去（常常）过去（常常）”“最好最好”“宁愿宁愿”We English.You smoke here.He dare not speak to you.You now.you me？He ,but Im not sure.It last night.It yesterday.1.过去式并不一定表示过去：过去式并不一定表示过去：can/could;may/might Coul
2、d you come earlier tomorrow?(请求请求)She might be right.(推测推测)2.May I/we.问句的回答：问句的回答：-watch TV now?-Yes,you.(或：或：Yes,please do.)-take this book out of the room?-No,you.(或：或：No,youd better not.)3.Must I/we/he 问句的否定回答：问句的否定回答：No,.neednt/dont have to *的含义：表的含义：表 4.情态动词表情态动词表推测推测时应注意的几个问题时应注意的几个问题:1)完全完全否定
3、否定推测用推测用:肯定肯定推测用推测用 He Peter.Peter has gone abroad.2)疑问句疑问句中的推测用中的推测用:it Tom who did it?3)must be doing:对对的动作的动作的的推测：推测：It is eight oclock.He TV now.4):对对的动作的动作的的推测：推测：It is wet outside.It last night.1.-Who is crying?-It _ be Tom.Hes just lost the game.2.-Who is crying?_ it be Tom?-No,it _ be him.I
4、just heard him singing in the street.3.He is black and blue all over.His father _(beat)him.4.The train started an hour ago.Now it _(travel)on the great plain.must Can cant must have beatenmust be travelling5.情态动词情态动词must表推测时表推测时的反意问句的构成：的反意问句的构成：要根据陈述部分要根据陈述部分(must)后的内容来确定后的内容来确定：He must be tired no
5、w,_?You must have seen the film,_?It must have rained heavily last night,_?They must be waiting for us now,_?isnt he?havent you didnt it arent they6.时有表示责备的含义：时有表示责备的含义：should/ought to have done(本该做本该做而实际上没做）而实际上没做）shouldnt/oughtnt have done(本不该做本不该做而实际做而实际做了）了）could have done （本可以做成本可以做成而实际上没）而实际上没
6、）neednt have done（本不必做本不必做而实际上却做了）而实际上却做了）1)Why are you doing your homework now?You it before class.2)You him about it.It may hurt him.3)You are late.You earlier.4)You the exam if you had been careful enough.5)You her the news,for I had told her earlier.7.shall,will,would 用法：用法：I turn on the light,m
7、adam?(征求意见征求意见)What we do now?(征求意见征求意见)I see him any more.(意愿意愿)you type this right now,please?*she type this right now?(征求意见征求意见)8.would“总是总是”/used to“过去常常过去常常”9.dare 和和 need既可以作既可以作用用,又可以又可以作作用用1)I dare say2)How dare you say that to me?3)-Dare he go alone?-No,he dare not.4)-Does he dare to go alo
8、ne?-No,he doesnt.5)-Need he do it now?No he neednt.(Yes,he must)6)-he there at once?Yes,he *作情态动词用时没有人称的变化作情态动词用时没有人称的变化1.(There is a knock on the door)-Who _ it _?(会是谁呢？会是谁呢？)-It _ _ the postman.（肯定是邮递员）肯定是邮递员）-It _ _ the postman.（不可能是邮递员）不可能是邮递员）-It _ _ the guard.（也许是保安）也许是保安）canbemust becant bema
9、y be2.It _ _ _ last night,for the ground is wet.（昨晚肯定下雨了）昨晚肯定下雨了）3.-Where is Mary?-She _ _ _ to the library.（肯定去图书馆了）肯定去图书馆了）-She _ _ _ to the library.I saw him in the teachers office.（不可能去图书馆）不可能去图书馆）must have rained must have gone cant have gone4.-Do you know where Tom is?-He _ _ _ to the dining r
10、oom,I am not sure.（也许去了餐厅）也许去了餐厅）5.You _ _ _ _ your homework yesterday.（本来应该上交）本来应该上交）6.My father _ _ _ my sister last night.She is a good girl.（本来不应该责备）本来不应该责备）may have gone should have handed in shouldnt have scolded 7.Lily came to school last Sunday.She _ _ _ to school.（本来没必要上学）本来没必要上学）8.You _ _
11、_ your home-work better last time.（本来可以做得更好）本来可以做得更好）9._ I open the window,Mr Wang?（可以）可以）10.I _ beat you if you tell me a lie.（我会打你的）我会打你的）neednt have gone could have done May shall 11._ I go there tomorrow?（可以）可以）Yes,you _.(No,you _.)12._ I finish my work today,?（必须）必须）No,you _.Yes,you _.13._ you
12、come home alone at night?（敢）敢）Yes,I _.14.I _ _tell him the bad news.（不不敢）敢）15.I _ _ _ tell him the bad news.（不敢）不敢）May may mustnt Must needntmustDaredare dare not dont dare to 16.You _ _ come to school this afternoon.（不必）不必）17.You _ _ _ come to school this afternoon.（不必）不必）18.He _ go home,(可以可以)but
13、you _ _.（不可以）不可以）19.It is getting dark,I _ _ go home.(必须）必须）20.The house was on fire,but we _ _ _ get out of the fire.（能够）能够）neednt dont need to maymay nothave to were able to 21.I _ swim when I was ten.（能够）能够）22.You _ _ go with us.（最好）最好）23.Liu Hulan _ _ die _ surrender.（宁死不屈）宁死不屈）24.My father _ _（
14、过去）过去）live in the countryside_ _?25.The young _ _ take care of the old,（应该）应该）_ _?could had better would ratherthanused to usednt he/didnt heought to oughtnt they 26.He _ _ tell the truth(不得不不得不),_ _?27._ you _ _ have another cup of coffee?（想再喝一杯咖啡吗？）想再喝一杯咖啡吗？）28.He said the story _ _ true.（不可能不可能是真的）是真的）29.Must I go home now?Yes,you _,(No,you _.)30.Our teacher is not in her office,she _ to the library.（也许去了）也许去了）has to doesnt he Would like to couldnt be must needntmay have gone
