七年级英语下册《Unit 7 Abilities grammar》课件 （新版）牛津版.ppt

Grammar,Unit7Abilities,学习目标,1.了解cancouldmay的用法2.会使用cancouldmay3.会使用感叹句,can,could,用于一般现在与将来时,用于一般过去时,can/could表示能力(意为“能,会”),Can1.能（表能力），2.可以，（许可），3.可能（表可能性）could1.can的过去式），2.可能,许可（比can更委婉，可能性更小）may1.许可，可能2.比can，could更正式，客气,Can,语气越来越委婉可能性越来越来小,could,may,回答时用can，表示肯定的语气,Can,could和may都可以表示许可，意为“可以”；Could比can更有礼貌，更委婉地提出请求，想法,（此时的could不表示过去，回答时肯定用can,否定用cant）。May是正式场合，用于对长辈，老师或陌生人。,Ican_.,rideabike,Lookandsay,WhatcanIdo?,Ican_.,playbasketball,WhatcanIdo?,He_thecello(大提琴).,canplay,Whatcanhedo?,Ican_everyday.,doexercises,WhatcanIdo?,_flyakiteonthebeach.,What_Ido?,can,Ican,Hecanswim.,Hecouldswimlastyear.,Hecanflyakite.,Hecouldflyakitelastyear.,Hecanrideabike.,Hecouldrideabikelastyear.,Shecanrowaboat.,Shecouldrowaboatlastyear.,Hecanplaytennis.,Buthecouldplayitlastyear.,Shecancook.Shecouldcooklastyear.,句型,肯定句：主语+can/could+do原形否定句：主语+can/couldnot+do原形疑问句：can/could+主语+do原形？yes,sbcan/couldno,sbcant/couldnt,如果表达不能做某事，可以在can后直接加not，成为cannot，也可以缩写为cant。Cannot如：Icannot(cant)playfootball.can没有人称和数的变化。不论表示谁能(不能)做某事，都是用can(not)。,Icanplaytheguitarbut,Tom_chess_he_itverywell.,canplay,but,cantplay,Icantplayitverywell.,否定句,He_buthe_.,She_she_.,canspeakEnglish,cantspeakitverywell,canpaint,but,cantpaintverywell,如果是询问某人能不能做某事，则要使用can的疑问形式，即将can提至句首。如：CanyouspeakChinese?Yes,Ican./No,Icant.,一般疑问句,A:Cansheplaytheviolin?B:_,shecan.,A:_she_?B:Yes,_.,Can,dance,shecan,Yes,A:_heplaythedrums?B:No,_,buthecanplaytheguitar.,Can,hecant,A:_sheplaythepiano?B:_,butshe_.,Can,candance,No,shecant,Could的用法,Itcanrideabike.Itcouldntrideabikelastyear.,She_rowaboat.She_rowaboatlastyear.,can,couldnt,rideabike,I_rideabikenow.I_rideabike2yearsago.,couldnot/couldnt,can,Taketurnstoaskandanswerquestionsusing“can”or“could”.Trytomakedialoguesinpairs.1._youspeakEnglish?2._youplaythepianolastyear?3._youcook?4._youuseacomputerwhenyouwere3?5._yourideabicyclewhenyouwereveryyoung?6._youunderstandEnglishTVprogrammesin2000?,Can,Could,Can,Could,Could,Could,Makedialoguesusingthefollowingpattern.,S1:Canyourideabike?S2:Yes,Ican./No,Icant.S1:Couldyourideabikefiveyearsago?S2:Yes,Icould./No,Icouldnt.,Canhe/sheflyakite?Yes,he/shecan.No,he/shecannot/cant.,Can1.能（表能力），2.可以，（许可），3.可能（表可能性）could1.can的过去式），2.可能（比can更委婉，可能性更小）may1.许可，2.比can，could更正式，客气,Can,语气越来越委婉肯定回答用can可能性越来越来小,could,may,1.Daniel:_Iopenthedoor,MrWu?MrWu:yes,you_2.Tom:Mum,_Ihaveanapple?Mum:No,you_It_rain,becauseitissunnynow.It_rain,becauseitiscloudynow.,May,can,may,Cant,may,can,其构成是：肯定句:主+can+动词原形否定句:主+cant+动词原形一般疑问句:Can+主+动词原形？肯定回答:否定回答:特殊疑问句:特殊疑问词+一般疑问句？,Yes,主+can.,No,主+cant.,现在我们来总结一下：,eg:Icandance.我会跳舞。Icantdance.我不会跳舞。Canyoudance?你会跳舞吗？Whatcanyoudo?你会干什么？,Yes,Ican.是的，我会。,No,Icant.不，我不会。,Canyouunderstand?,“can”“could”“may”toaskforpermission.“Could”soundsmorepolitethan“can”.Mayisformal.,1.-CanIborrowyourbike,Millie?-Yes,youcan.Hereyouare.2.-CouldIsmokehere?-Sorry,Imafraidyoucant.3.-MayIuseyourmobilephone?-Ofcourseyoumay.,What/how感叹句的用法,会使用what/how感叹句,1.把钥匙忘在教室了2.顺便问一下3.没问题4.看透墙5.用他的眼睛烧东西6.听得很远7.多奇怪啊！8.和光一样快9.多有趣的一个主意!10.多优美的音乐!,leftthekeyintheclassroom,bytheway,noproblem,seethroughwalls,burnthingswithhiseyes,hearthingsfaraway,Howstrange!,runasfastaslight,Whataninterestingidea!,Whatnicemusic!,Whatabigpencilboxitis!Howbigthepencilboxis!,Whatbeautifulflowerstheyare!Howbeautifultheflowersare!,Theflowersarebeautiful.Whatbeautifulflowerstheyare.Howbeautifultheflowersare!,Thecatislovely.Whatalovelycatitis.Howlovelythecatis!,pretty,Howprettythelittlegirlis!,Whataprettygirlsheis,Howtallthemanis!Whatatallman(heis)!,Workouttherules:,itis,theyare,itis,用what(a/an)或how填空：,1._excitingmusicitis!2._happilytheyareplaying!3._amazingfilmtheysaw!4._lovelyanimalstheyare!5._amazingmatchitis!,What,How,Whatan,What,Whatan,What与How大转换,1.Whataprettygirlsheis!_thegirlis!2.Howdifficultthequestionsare!_theyare.3.Howbigthefactoryis!_bigfactory_!,Howpretty,Whatdifficultquestions,Whata,itis,4.Whatacleverboy!_theboy_!5.Howtallthetreesare!_talltrees_!6.Whatinterestingbookstheyare!_thebooks_!7.Howfunnythegirlis!_afunnygirlsheis!,Howclever,are,What,Howinteresting,What,theyare,is,8.Howoldthemanis!_oldman_!9.Whatnicebookstheyare!_thebooks_!10.Howamazingthebuildingis!_amazingbuilding_!,Whatan,heis,Hownice,are,Whatan,itis,小结,感叹句通常有what,how引导，表示赞美、惊叹、喜悦等感情。,How+形容词+a+名词+陈述语序How+形容词或副词+陈述语序What+名词+陈述语序What+a+形容词+名词+陈述语序What+形容词+复数名词+陈述语序What+形容词+不可数名词+陈述语序,Howcleveraboyheis!Howlovelythebabyis!Whatnoisetheyaremaking!Whatacleverboyheis!Whatwonderfulideas(wehave)!Whatcoldweatheritis!感叹句的省略形式为：Whatacleverboy(heis)!,Lucycanplaythepiano.(改为一般疑问句并作肯定回答)_2.Mikecanswim.(改为否定句)_,句型转换,CanLucyplaythepiano?Yes,shecan.,Mikecantswim.,3.Canyouplaychess?(否定回答)_.4.TheycanspeakEnglish.(变为否定句)They_English.,No,Icant,cantspeak,翻译句子,1.-比尔会弹钢琴吗？-是的，他会，但是他不会唱歌。2.-她会唱歌吗？-不，她不会，但是她会跳舞。,CanBillplaythepiano?Yes,hecan,buthecantsing.,Canshesing?No,shecant,butshecandance.,3.去年他不会划船，但现在他能划得很好。,4.年轻人能为老年人做很多事情。,Hecouldntrowaboatlastyear,butnowhecandoitwell.,Youngpeoplecandomanythingsfortheelderly.,5.我的网球拍(tennisracket)坏了，昨天我就不能打球了。,6.多么勇敢的年轻人啊！,7.太棒了。,Mytennisracketwasbroken,soIcouldntplaytennisyesterday.,Whatabraveyoungman!,Howwonderful!,IV.单项选择,_foodyouvecooked!A.HowaniceB.WhataniceC.HowniceD.Whatnice,2._terribleweatherwevebeenhavingthesedays!A.WhatB.WhataC.HowD.Howa,Homework,Makesentenceswithcan/couldWhat!How!,Thankyou!,A:I_readtheart