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Unit6Electricity,第3课时Grammar,Module3Naturalelements,广东学导练七年级下册配上海教育版,选择填空（）1.Mum,_IvisittheModernArtMuseumnextMonday?Imafraidyoucant.AllthemuseumsinthiscityareclosedonMonday.(2016广东）A.wouldB.needC.shouldD.may（）2.IsthatboyTom?It_beTom.Hehasgonetohishometowntovisithisgrandparents.(2016铜仁）A.canB.cantC.mustD.mustnt,D,B,（）3.Whatwilltheweatherbeliketomorrow?It_berainy,cloudyorsunny.Whoknows?(2016鄂州）A.mustB.mightC.shouldD.cant（）4.MustIcleantheroomnow,Mum?No,_.(2016邵阳）A.youmustntB.youneedntC.youcant（）5.Excuseme,_Itakethemagazineoutofthereadingroom?Sorry,youcant.Justhere,please.(2016淮安）A.mustB.wouldC.mayD.need,B,B,C,情态动词can，may,must的用法1.can的用法（1）表示能力，一般译为“能；会”，即有某种能力。如：Shecandrive,butIcant.她会开车，但我不会。（2）表示许可，常用在口语中，相当于may。如：CanIuseyourmobilephone?我可以用你的手机吗？（3）表示推测，意为“可能”，常用于否定句和疑问句中，此时cant译为“不可能”。如：CanitbeMary?会是玛丽吗？No,itcantbeher.ShehasgonetoShanghaionbusiness.不可能是她。她去上海出差了。,（4）could是can的过去式，意为“能；会”，表示过去的能力。如：Hecouldplaythepianowhenhewas5.当他5岁时，就会弹钢琴了。（5）在表示请求许可时，can，could没有时态区别，只是could在语气上更加委婉客气。如：CouldIuseyourdictionary?我可以用你的字典吗？Yes,youcan.可以。2.may的用法（1）表示请求、许可。如：MayIborrowyourbike?我可以借你的自行车吗？,（2）表示推测，谈论可能性，意为“可能；或许”，一般用于肯定句中。如：Itmayraintomorrow.明天可能会下雨。（3）may的过去式为might，表示推测时两者无时态区别，不过might的可能性低于may。如：Hemightbesick.他可能是生病了。（4）表示希望、祈求、祝愿时，may常译为“祝愿”，通常结构为“may+主语+动词原形+其他”。如：Mayyouhaveagoodtime！祝你玩得开心！,3.must的用法（1）must意为“必须；一定”。如：MustIhandinmyhomeworktoday?我今天必须交作业吗？（2）must的否定形式mustnt意为“一定不要；千万别”或“禁止；不许”。如：Youmustntmakenoiseinthelibrary.你一定不要在图书馆吵闹。（3）对must引导的疑问句，肯定回答用must，否定回答用neednt或donthaveto。如：,MustIreturnthebooktohimtoday?我今天必须把书还给他吗？Yes,youmust./No,youneednt（donthaveto）.是的，必须要还。/不，你不必。（4）must可以表示很有把握的推测，意为“一定会；肯定会”，只用于肯定句中。如：HewontheprizeintheEnglishcompetition.HisEnglishmustbeverygood.他在英语竞赛中获奖了。他的英语一定很好。,一、用can,cant,may,must,mustnt填空1.What_Idoforyou?Iwantsomebananas.2.Tom_rideabike,buthecandriveacar.3.Youareill,Tom.You_seeadoctor.4.Children_playbasketballinthestreet.5.Ifyouarenotcareful,acar_hityou.6._Icomein?Yes,youmay.Comein,please.7.Ablindman_seeanything.,can,cant,must,mustnt,may,May,cant,二、按要求完成下列句子1.MayIgotoplayfootballwithmyfriends,Dad?（作否定回答）No,_.2.Daisycanrepairthemachine.（改为否定句）Daisy_repairthemachine.3.Youmustdothingslikehim.（改为否定句）You_thingslikehim.,you,may,not,cant,cant/mustnt,do,三、语法填空Newenergyinthetwenty-firstcenturyEnergyfromthewindWindis1._kindofcleanenergy,andthere2._（be）lotsofit.But,3._theresnowind,thereisnowindenergy.EnergyfromthewaterWhenwatermoves4._ahighplacetoalower（较低的）place,itcanmakeelectricitywithout5._（pollute）.However,peoplehavetobuilddams（水坝）6._（use）thisenergy,andbuildingdamsisvery7._（expensively）.,a,is,if,through,pollution,touse,expensive,EnergyfromtheSunSolarpanels（太阳能电池板）ontheroofs（屋顶）ofhousescanturnenergyfromtheSuninto8._（electric）.Solarpoweriscleanandplentiful（丰富的）.9._whentheweatherisbad,it10._（notwork）.,electricity,But,doesntwork,一、选择填空（）1._Ifinishtheworknow?No,you_.Youcanfinishittomorrow.A.May;mustntB.Must;needntC.Can;mustnt（）2.DoIhavetocomebacktomorrow?Yes,you_.A.canB.mayC.must（）3.IhavetopractisemyoralEnglisheverydaybecauseI_speakEnglishwell.A.maynotB.shouldntC.cant,B,C,C,（）4._Icomein,sir?Ofcourse,youcan.A.MustB.MayC.Will（）5.Idontknowwhathedoes.Doyouknow?Iguesshe_beadoctor.A.canB.mayC.must（）6.Theflowerslook_.Iwillbuysome.A.niceB.nicelyC.bad（）7.Askthepolicemanoverthere.He_knowthewaytotheScienceMuseum.A.hastoB.couldC.may,B,B,A,C,（）8.John,youneedntworktoday.You_doittomorrowifyouaretired.A.mustB.mayC.cant（）9.WhosthatwomanwithAnn?Imnotsure.It_behermother.A.mustB.canC.may（）10.ManypeoplelikeJayChoubecausehe_writebeautifulmusic.A.canB.mayC.must（）11.Mum,_Iplayfootballthisafternoon?Sure,butyou_finishyourhomeworkfirst.A.may;couldB.can;mustC.may;cant,B,C,A,B,（）12.IsMrBrowndrivinghere?Imnotsure.He_comebytrain.A.mayB.shallC.need（）13.Manypeopleplaywithmobilephonesalldayinsteadofreadingbooks.Thatstoobad.Everyone_beabooklover.Readingismoreenjoyable.A.mayB.shouldC.would（）14.Whereareyougoingthismonth?We_gotoXiamen.butwerenotsure.A.needntB.mightC.must,A,B,B,（）15.Pleasebequiet.Ourteacheriscoming.It_beourteacher.ShehasgonetoBeijing.A.mustB.mayC.cant二、选词填空cancantmustmustntmay1.Mary_speakthreelanguages.2._/_Ismokeinthisroom?3._yousucceed!4.YoureTomsgoodfriend,soyou_knowwhathelikesbest.5.I_liftthebox.Itistooheavyforme.,C,can,Can,May,May,must,cant,6.Everythingiscleanandtidy.Someone_havecleanedmyroom.7.He_cometomorrow,butIamnotsure.8.You_playwithfire.Itisdangerous.9._itbetrue?No,it_betrue.10.You_gooutaloneatnight.三、语法填空Electricitymakesourlives1._(easy)thanbefore.Weusealotofelectricalappliances2._ourhouseseveryday.Here3._(be)threeofthem.Howcanweusethem4._(safe)?,must,may,mustnt,can,cant,mustnt,easier,in,are,safely,Whenweusethericecooker,weshouldkeeptheoutsideofthepotdry.Donotswitchthericecookeron5._/_thepotisempty.Whenweusethewashingmachine,weshouldnotputourhandinitwhenitis6._.Whenwearenotusingit,weshould7._(plug插上插头)it.Whenweusethemicrowave,weshouldnotturnitonwhenitisempty8._itmightstartafire.Weshouldstandatleast9._(first)metreaway10._themicrowavewhenitison.Beforeweputanobjectinit,makesureitismicrowavesafe.,when,if,on,unplug,because,one,from,
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