九年级下册英语外研版Module 4Unit 3

学练优八年级英语上（WY）教学课件九年级英语（WY下）教学课件Module4Unit3Languageinuse

Learningtargets★Tosummarizeandconsolidatetheuseofmodals.★WriteadviceforvisitorstoChina.hangthefoodinatreemoveonbyastreamtidyupreachoutturnpaleplaywithsticks把食物挂在树上继续移动在小溪旁边收拾;整理伸出(脸色)变得苍白玩枝条TranslatethephrasesintoEnglish.Revision

Whatsuggestionscanyougivetopeoplewhengowalkinginthemountains?Leadin1.Thevisitorsshouldwearahat.2.Don’twalkalongtheedge.3.They’dbettertakesomefoodandwater.4.Theyshouldwearcomfortableshoes.…情态动词本身有一定的词义,表示说话人的情绪、态度或语气,但它们不能单独作谓语,只能和行为动词原形一起作谓语,表示完整的意思。本单元我们主要接触的情态动词有:

情态动词Grammar1.can(1)表示能力,意为“能,会”。例：Canyouplaytennis?你会打网球吗？(2)表示请求、允许，意为“可以”。Canyoupassmethatbook?

你能把那本书递给我吗？Youcanusemybike.你可以用我的自行车。否定式用can’t.提示:表示否定推测“不可能”,常用can’t,。

例：Isawhimplayingfootballjustnow.Hecan’tbeintheclassroom.—CanIborrowyourruler,please?—Yes,you______.Butyoumustreturnittomebeforelunchtime.【江苏徐州中考】A.haveB.canC.mustD.usedto中考链接【解析】考查情态动词。答句意为“是的，你可以，但你必须在午饭之前归还给我”,所以选择B。Theman______bemyEnglishteacher.HehasgonetoCanada.

【湖南益阳中考】A.mightB.mustC.can’t【解析】考查情态动词的用法。must表肯定的推测，意为“一定”，可能性较大，might表示肯定推测，“可能”，可能性较小，can’t表示否定推测，意为“不可能”。根据句意：那个人不可能是我的英语老师，他去加拿大了。故选C。2.could

(1)can的过去式，意为“能，会”，表示过去的

能力。例：Hecoulddrawpictureswellwhenhewasyoung.当他小的时候，他的画就能画得

很好了。(2)could用在疑问句中，表示更加委婉的请求,回答用can。例：—CouldIuseyourdictionary?—Yes,youcan.(否定回答可用：No,I’mafraid.)3.must(1)表示“必须”,强调主观意愿。例：

Imustgonow.我现在必须得走了。Youmustfinishitontime.你必须按时完成。(2)表示肯定推测“一定”,一种可能性很大的推测,一般用于

肯定句中,否定句中则要用can来代替。例：

—There’ssomeoneknockingatthedoor.

有人在敲门。—ItmustbeJim.一定是吉姆。(3)mustn’t意为“不要”,表示禁止或不允许。例：Youmustn’tsitonthestairs.你不必坐在楼梯上。

(4)以must开头的一般疑问句,肯定回答用must,否定回答

要用needn’t或don’thaveto,表示“不必”而不用mustn’t。例:—MustIreturnthebooknow?我必须先在归还这本书吗？—No,youneedn’t./Yes,youmust.不，不必。/是的，必

须现在归还。()1.—MustIstayathomeandtakecareofher？—No,you______.A.mustn’tB.needn’tC.can’t()2.Pleasedon’tthrowpaperabout.We_______keepourenvironmentclean.A.canB.mustC.mayBBPractice4.may和might

(1)表示允许

①表示请求允许(即请求别人允许自己做某

事),两者都可用,只是might表示的语气较

委婉(但并不表示过去)。

例:MayIcomeroundinthemorning?我

早上来行吗?IwonderifImightuseyourphone.不知可

否用一下你的电话。②表示给予允许(即自己允许别人做某事)，只能用may

而不能用might。例：Youmaystopnow.你现在可以停下来了。

Youmayleavewhenyou’vefinished.你做完以后就

可以走。

注意：might表示允许通常不表示过去，但是在间接引语(即宾语从句)中可以用作may的过去式来转述已给予的允许。例：Shesaidthathemighttakeherdictionary.她说他可以拿她的词典去用。(2)表示推测两者都可用，只是might比may语气更不确定，表示的可能性更小(注意此时的might并不表过去)。在句型使用方面：may通常用于肯定句或否定陈述句，一般不用于疑问句(疑问句中用can)，而might则可用于肯定句、否定句或疑问句。例：Hemaybeathomenow,butI’mnotsure.他可能在家里，但是我不确定。Mightheknowtheanswer?他可能知道答案吗？Peter______comewithustonight,butheisn’tverysureyet.

A.must

B.may

C.can

D.will学以致用5.should(1)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”。

例：Weshouldobeytrafficlaws.

我们应该遵守交通法规。Youshouldn’thavemadethiskindofsillymistakes.你不应该犯这种愚蠢的错误。这时它可以和oughtto,besupposedto互换使用。(2)should(oughtto)表示推测时，是指有一定根据的推测，意为“可能、该”。例：—WhencanIcomeforthephotos?Ineedthemtomorrow.我什么时候可以来拿这些照片？我明

天需要它们。—Theyshouldbereadyby12:00.十二点的时候就

可以准备好了。It’snearlyseveno’clock.Jackshouldbehereatanymoment.快七点了。杰克可能快到了。1.—_______IborrowyourMP3?—Sure.Hereyouare.A.MayB.ShouldC.MustD.Would2.—IsJohncomingbytrain?—He_______,buthemaynot.Helikesdrivinghiscar.

A.must

B.can

C.need

D.should学以致用PracticeWorkinpairsandtalkaboutpossiblerulesforvisitorstotheforests,usingmust,mustn’t,should,shouldn’t.例：Don’twalkonthelawn(草坪).Youshouldtakecareofthelawn.…Youmustbecarefuloffallingstones.Youmustn’twalktooclosetotheedgeofthehillpathbecauseyoumightfallandhurtyourselves.Youshouldalwayswearproperclothes.Bearsmightthinkourrubbishisfood.—Canwegorockclimbing?—No,youcan’t.Readandpayattentiontothecoloredwords.LanguagepracticeCompletetherules.Don’tdrinkthewater.Don’tclimbtheladder.Noswimming.Youmustn’tturnleft.Noparking.Don’tplayfootball.Youmustn’tstophere.213Matchthepictureswiththerules.×Becarefulofchildrencrossingtheroad.It’sdangeroustostayoutinthesunshinetoolongwithoutahat.Smokingisnotallowedinsidethebuilding.Don’tclimbtheladder.Matchthesignswiththerules.1.Matchthesignswiththerulesandwarnings.abcdef1

Nosmoking.2

Noeatingordrinking.3

Childrencrossing.4

Danger!Becarefuloffallingrocks.5Childrenshouldbetakencareofbyparents.6

Donotdrinkanddrive.Dos·checkinatthemaingatewhenyoucometothecentre.·climbwithsomeone.·Wearahardhatatalltimes.·wearthecorrectclimbingshoes.·wearcomfortableclothes.2.Readthelistofrulesandwritesentencesusing

must,mustn’t,shouldorshouldn’t.Don’ts·Don’tclimbwithoutarope.·Don’teatordrinkanywhereexceptintherestaurant.·Don’tlistentopersonalmusicplayerswhileclimbing.·Don’ttalkonamobilephonewhileclimbing.LondonIndoorClimbingCentreVisitorspleasenote:3.Workinpairs.ExplainwhytherulesinActivity2areimportant.—Whymustyoucheckinwhenyoucometothecentre?—Becausetheywanttoknowwhoisthere.1Whymustyouclimbwithsomeone?Becauseyoucanaskforhelpifyoumeetsomeproblems.2Whymustyouwearcomfortableclothes?Becausecomfortableclothescanmakeyoulesstired.3Whymustn’tyouclimbwithoutarope?Becauseitisdangerousforyou.4Whyshouldn’tyoulistentomusicwhileclimbing?Becauseyoucanhearwhatisgoingonaroundyou.Peoplearevery(1)_______abouttheconditionsoftheancientforestsofCanadaandwanttosavethem.Manyvisitorstotheforestsuseknivestocuttheirnamesintothetrees,someofwhicharehundredsofyearsold.(2)________therearelitterbins,peoplestillthrowrubbishintothe(3)________andthiscausesplantsandfishtodie.Peoplefromlocalvillageshavehelpedcleanuptheforests.Wehope(4)_______willplaytheirpartin(5)________Canada’sforestscleantoo!althoughkeepstreamtouristworryworriedAlthoughstreamtouristskeeping4.Completethepassagewiththecorrectformofthewordsinthebox.Youshould___________________________.Youshouldn’t________________________.Youmust___________________________.Youmustn’t_________________________.Nowwritepossiblerulesforvisitorstotheforests.throwrubbishintothelitterbins

throwrubbishintothestreamhelpsavetheancientforests

useknivestocutyournamesintothetrees1.Comeandvisitme________youhavetime.2.Thewallismadeof_______.3.Thepathtothetopisnotvery________.4.Remembertotakea_______withyoutosleepin,becauseitmightrain.5.Heliftedupthe_______andpointeditatthebear.6.Therewasa________noiseinthewoodsandweallstoppedmoving.7.Birdsusesmall_______andleavestomakeahome.

gunsmoothsticksstonesuddententwheneverwheneverstonesmoothtent

gunsuddensticks5.Completethesentenceswiththewordsinthebox.1.WhatdoesZhangWenpengtrytosaywithhisdrawing?2.WhatdoesZhouZhiyuntrytosaywithhispainting?Pollutioniscausingdamagetotheprogresswe’vemade.Peoplemustn’twasteelectricity.6.Readthepassageandanswerthequestions.3.Whatdoestheschoolsuggestthestudentsshoulddo?4.Howcanaschoolbecomea“greenschool”?Studentsshouldpassonwhattheyhavelearntatschooltotheirparentsandneighbours.Aschoolmustincludeeducationabouttheenvironmentaspartofthetimetable.7.Listenandcompletethesentences.1.Thefirstthingyouhavetodoisto______________carefully.2.Thinkaboutwhere____________________andwhetherthereare___________________.3.Youshouldonlytakemarked________.4.Makesureyouknowwhere___________forlunch.5.Don’tforgettotellpeopleto_________forthepicnic.6.Don’twalkwhenitis________orin_________________.7.Youmustnottryouta___________withagroup.youcanstopbringfoodtoohotverybadweathernewwalkplantheworkyouaregoingtoworkclearlymarkedpathspathsAroundtheworld

EcotourismEcotourismisalsoknownas“responsibletourism”.Itmeansyouvisitplaceswithoutdamagingtheenvironment.Manycountriesaroundtheworldhavestartedecotourismholidaysandtrips.Touristshelpthelocalcommunitieslookaftertheirnaturalenvironment.Herearesomerulesofecotourism.Dos

Takerubbishawaywithyou.Walkonpathsorroads.Takephotosbutnothingelse.Don'ts

Don’tpickflowersordamagetrees.Don’tpolluteriversorstreams.Don’tmakeopenfiresintheforests.visitingsomeone’shomeeatinganddrinkingtravellingonpublictransportbehavingpolitelyinpublicvisitingtouristsights8.Workinpairs.Discussandgiveadviceforvisitors

toChina.Talkabout:WritingadviceforvisitorstoChina.Moduletask9.Writeyouradvice.Youmust…Youmustn’t…Youshould…Youshouldn’t…10.Workingroupsandcompareyouradvice.ChoosethefivemostuefulpiecesofadviceforvisitorstoChina.()1.—MayIgooutnow,Dad?—No.You_____letyourmotherknowfirst.A.canB.may

C.needD.mustDExercise【解析】考查情态动词词义。由答句中“不”，表示语气要求很坚决，应该是“必须”。()2.—Who’ssinginginthenextroom?—It_____beher.ShehasgonetoNewYork.A.can’t B.must C.shouldn’t D.canA【解析】考查情态动词表推测。表示否定推测时，用can’t，意为“一定不……”。must表示推测时，意为“一定……”，用于肯定句；根据答语“她已经去了纽约”可知是否定推测，故选A。()3.—_______wecleantheclassroomatonce?—No,you_______.You_______cleanitafterschool.A.Must;needn’t;mayB.Must;mustn’t;canC.Shall;can’t;mustD.Need;mustn’t;mayA【解析】情态动词的用法。根据前后句意可推断对方在询问“我必须马上打扫教室吗？”。而must引导的一般疑问句否定回答用needn’t或don’thaveto。故选A。()4.—Lookatthesign!

—Oh,Isee.We_______wastewater.A.canB.must

C.mustn’tD.needn’t【解析】情态动词的用法。根据标志可知为禁止浪费水的标志。表示禁止用must，因此选C。C(

)5.—Goodmorning.I'vegotanappointmentwithMs.Kinginheroffice.

—Morning.You_______beMr.Jones.Thisway,please.A.will B.must C.can D.mightB【