初中情态动词课件

,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,情态动词专项练习,By Steven,情态动词专项练习By Steven,1.must,You must come in time.,1),表示必须、必要。是说话人的主观看法,在回答引出的问句时，如果是否定的，,不能用,mustnt,（禁止，不准），而用,neednt,dont have to,（不必）,.,-Must we hand in our exercise books today?,-Yes,you must.,-No,you dont have to/you neednt.,1.mustYou must come in time.,1.must,Youre Toms good friend,so you must know what he likes best.,2),表示推测、可能性（只用于肯定的陈述句）,1.mustYoure Toms good frien,1.(13,江西,)Theres only one day to,Go.You _ finish your work by,Tomorrow.,can B.will C.must D.may,2.(11,江苏,)Fifty dollars for a T-,Shirt!You _ be joking!,A.must B.need C.may D.can,1.(13江西)Theres only one day,Might and may,表示请求和允许。,might,比,may,语气更委婉，而不是过去式,否定回答时可用,cant,或,mustnt,，表示“不可以，禁止”。,-Might/May I smoke in this room?,-No,you mustnt.,-May/Might I take this book out of the room?,-Yes,you can.(No,you cant/mustnt.),用,May I.,？征徇对方许可时比较正式和客气，而用,Can I.,？在口语中更常见。,Might and may表示请求和允许。might比 ma,2,）用于祈使句，表示祝愿,。,May you succeed!,(13,河北,)_ I see your ID card,sir?We have to check your information.,A.May B.Must C.Should D.Need,2）用于祈使句，表示祝愿。May you succeed!,3),表示推测、可能性（不用于疑问句）。,might,不是过去式，它所表示的可能性比,may,小。,1,He may/might be very busy now.2,Your mother may/might not know the truth.,3)表示推测、可能性（不用于疑问句）。might不是过去式,2.(11,安徽,)May I go out now,Dad?,-No.You _ let your mother know,First.,can B.may C.need D.must,3.(13,年湖北,)Must I go there with,You?,-No,you _.David _ go there,with you.,mustnt;can B.cant;must,C.dont;should D.neednt;may,2.(11安徽)May I go out now,Dad,三、,can,could,Can you lift this heavy box?,（体力）,Mary can speak three languages.,（知识）,Can you skate?,（技能）,1),表示能力（体力、知识、技能）。,三、can,could Can you lift this,此时可用,be able to,代替。,Can,只有一般现在时和一般过去式；而,be able to,则有更多的时态。,Ill not be able to come this afternoon.,当表示“经过努力才得以做成功某事”时应用,be able to,，不能用,Can,。如：,He was able to go to the party yesterday evening in spite of the heavy rain.,此时可用be able to代替。Can只有一般现在时和一般,2),表示请求和允许。,-Can I go now?,-Yes,you can./No,you cant.,此时可与,may,互换。在疑问句中还可用,could,might,代替，不是过去式，只是语气更委婉，不能用于肯定句和答语中。,-Could I come to see you tomorrow?-Yes,you can.(No,Im afraid not.),2)表示请求和允许。-Can I go now?,3),表推测可能性。,肯定句中：,can,表示理论上的可能性；,may,表示事实上的可能性，如：,In Yuyao,sometimes it can be really cold.,Tom may go camping with us tomorrow,but he is not sure.,否定句和疑问句中，只能用,can,表猜测可能性。,Someone is knocking at the door,and who can it be?,It cant be Tom because he has gone to Beijing.,3)表推测可能性。肯定句中：can表示理论上的可能性；ma,1.(13,北京,)-_ you sing an English,song?-Yes,I can,Can B.May C.Must D.Need,2.(13,福建,)-Is that girl Susan?,-It _ be her.She left for Beijing yesterday.,neednt B.cant C.mustnt,1.(13北京)-_ you sing an Engl,四、,shall,shall,用于第一人称，征求对方的意见。,What shall we do this evening?,shall I clean the room for you?,四、shall shall 用于第一人称，征求对方的意见。,2)shall,用于第二、三人称，表示说话人给对方的命令、警告、允诺或威胁。,1.You shall fail if you dont work hard.(,警告,),2.He shall have the book when I finish it.(,允诺,),3.He shall be punished.(,威胁,),2)shall 用于第二、三人称，表示说话人给对方的命令、,五,.should,表示“应该”，常用来表示劝告、建议；认为“某人应该做某事”或“有义务责任做某事”。,We should obey traffic laws.,You shouldnt watch TV every day,。,You shouldnt have made this kind of silly mistakes.,Tom should have brought his report today.,这时它可以和,ought to,，,be supposed to,互换使用,五.should表示“应该”，常用来表示劝告、建议；认为“,2)Should(ought to),表示推测时，是指有一定根据的推测，意为“可能、该”,-When can I come for the photos?I need them tomorrow,-They _ be ready by 12:00,2)Should(ought to)表示推测时，是指有一,3.,表示惊讶的语气,You can never imagine such a gentleman should be so rude to a lady.,3.表示惊讶的语气You can never imagin,(11,浙江,)Schools _ allow students,at least one hour a day for sports.,would B.might C.should,2.(13,江苏,)-_ I do the laundry,First,Mum?,-No,you_.You can do your,homework first.,Must;mustnt B.Can;mustnt,C.Must;neednt D.May;neednt,(11浙江)Schools _ allow student,六：,will,和,would,1),表示意志或意愿：决心，愿意，,We will do our best to save the child.,我们会尽力抢救这个孩子。,I told her to stop crying,but she just wouldnt listen.,我叫她别哭,可她就是不愿听。,六：will 和would1)表示意志或意愿：决心，愿意，,2),表示请求、建议或征求对方意见时，用,Would you,?,比用,Will you,?,更婉转。如：,Will/Would you please keep the door open?,请让门开着好吗？,Will/Would you go with me?,你愿意和我一起去吗,?,2)表示请求、建议或征求对方意见时，用Would you?,相关情态动词,would like,表示愿意,I would like to have a word with you.,我想同你说句话。,would rather,than,宁愿,也不愿,I would rather fail than cheat in the examination.,我宁愿考不及格，也不愿意考试作弊。,相关情态动词would like表示愿意,七。,need,1,need,作情态动词无人称或数的变化，,后接动词原形，多用于否定句和疑问句中。,如：,Youneedntworry.,你不必担心,I neednt have brought the raincoat with me in such a sunny day yesterday.,七。need1need作情态动词无人称或数的变化，后接动,2,由,need,引出的一般疑问句，肯定回答常用,must,或,haveto;,否定答语常用,neednt.,如：,NeedIanswerthequestion?,我需要回答那个问题吗？,Yes,youmust.,-Yes,youhaveto.,是的，你必须回答。,-No,youneednt./you dont have to,不，不必了。,2由need引出的一般疑问句，肯定回答常用must或hav,由,must,引出的一般疑问句，肯定回答用,must,否定答语用,neednt,或,donthaveto,。如：,MustIdotheworknow?,我必须现在干这个活吗？,Yes,youmust/haveto.,-No,youneednt/donthaveto.,由must引出的一般疑问句，肯定回答用must,否定答语用n,Need,做行为动词,Need sth,Need to do sth,Need doing=need to be done,表被动,否定：,dont need,Need 做行为动词Need sth,八：,dare,敢,通常用于疑问句、否定句或条件句中,Dare you ask him?,你敢问他吗？,She dare not go out alone.,她不敢单独出去。,I dont know whether he dare try.,我不知道他敢不敢试。,八：dare 敢通常用于疑问句、否定句或条件句中,注意：,1.,有过去式,dared,。如：,No one dared speak of it.,没有人敢提及此事。,2.How dare you/he/she/they,?,表示说话人对某人的行为表示愤慨。如：,How dare you ask me such a question?,你怎敢问我这样的问题,?3.I dare say,表示“我相信，我认为，可能”。如：,I dare say you are right.,我认为你是对的,注意：1.有过去式dared。如：No,作行为动词：可用于各种句子中；在疑问句或否定句中，,to,经常被省略。如,Did anyone dare(to)admit it?,有人敢于承认吗,?He did not dare(to)leave his car there.,他不敢把车停放在那里。,If he dares to show up at her house Ill be surprised.,如果他敢出现在她的房子里，我会感到吃惊。,作行为动词：可用于各种句子中；在疑问句或否定句中，to经常被,注意点一：,表推测可能性：,must,can,may,might,cant,couldnt,-I heard they went skiing in the mountains last winter.,-it _ true because there was little snow where.,注意点一：表推测可能性：must,can,may,mi,二、表推测的用法,1.must have done,过去肯定做了某事,Since the road is wet,it must have rained last night.,不存在,mustnt have done,的形式。其否定或疑问形式须用,can(could),来表示,.,例如：,He cant have missed the way.I drew him a map.,“The dictionary has disappeared.Who could have taken it?”,二、表推测的用法 1.must have done过去肯定,may/might have done,I cant find my keys.I may/might have left them at the school yesterday.,我找不到我的钥匙了。我可能昨天把他们落在学校了。,John may/might not have passed the exam;he looks very sad.,约翰可能没有通过考试。他看起来很忧伤。,may/might have done I cant,3.can/could have done,表推测一般用在否定句和疑问句中，表示不相信或怀疑的态度。,Can/Could he have passed the exam?,他可能通过了考试吗？,I think that he couldnt/cant have gone abroad.I saw him just now.,我认为他不可能出国了。我刚才还看见他了。,3.can/could have done 表推测一般用在否,