Unit2Topic2SectionD课件仁爱英语八年级上册

WaystokeephealthyYoushould/must

domorningexerciseseveryday.Youshould/mustputlitterintothedustbin.Youshould/mustbrushteethtwiceaday.Youshouldn’t/mustn’treadinthesun.Youshouldn’t/mustn’tthrowlitteraround.Youshouldn’t/mustn’tstayuplateatnight.1Listenandnumberthefollowingpictures.takeshowers洗澡washhands

洗手openthewindow开窗sourmilk酸了的牛奶tidyrooms整理房间spitinpublic当众吐痰1Makesentenceswiththestructuresinthebox.Weshouldtakeshowersoften.我们应该经常洗澡。Weshouldwashhandsbeforemeals.我们应该饭前洗手。should/shouldn’t…must/mustn’t…We1Makesentenceswiththestructuresinthebox.should/shouldn’t…must/mustn’t…WeWeshouldoftenopenthewindowtokeeptheairfresh.我们应该经常开窗以保持空气新鲜。Wemustn’tdrinksourmilk.我们不能喝酸了的牛奶。/ˈsaʊər/adj.酸的;馊的;1Makesentenceswiththestructuresinthebox.should/shouldn’t…must/mustn’t…WeWeshouldtidyourroomseveryday.我们应该每天打扫/整理房间。Wemustn’tspitinpublic.我们不能在公共场合吐痰。/ˈtaɪdi/adj.

整齐的

v.

整理/spɪt/v.吐;唾Let’stalkaboutsmoking.Doesyourfathersmoke?Whydopeoplelikesmoking？Becausesmokingcanhelpthemrelax.Whentheyfeeltired,smokingcanmakethemfeelbetter.Thereareover7000chemicalsincigarettes./ˈkemɪk(ə)l//ˈsɪɡəret/

化学品

香烟、纸烟Thesechemicalsarebadforourbodies.body---bodies身体Infact...事实上Theycancausecancerandotherdiseases./dɪˈziːz/病、疾病Infact...事实上Although（尽管）youdon'tsmoke,smokingcanalso

harmyou.

/hɑːrm/危害、伤害、损害second-handsmoke二手烟Itisalsodangerousandhighrisks./rɪsk/

危险、风险

（使）冒...的风险Whatshouldtheydo?Smokersshouldn'tusesmokingtohelpthemrelax.Theymustgiveupsmokingassoonaspossible.

尽快

Somepeoplethinkthatsmoking________(must/can)helpthemrelax.Infact,smokingisreally__________(healthy/unhealthy).Doyouknowthatthere______(is/are)over4000chemicalsincigarettes?Thesechemicalsare_______(good/bad)forourbodies.They_____(must/can)causecancerandotherdiseases.

Thesmokefromcigarettesharms___________(only/notonly)smokersbutotherpeople.It’scalled“second-handsmoke”andit______(can/can’t)bemoredangerousandhashigherrisks.Smokersshouldn’tusesmokingtohelpthemrelax.They______(must/mustn’t)giveupsmokingassoonaspossible.Completethepassagewiththecorrectwords.2canunhealthyarebadcannotonlycanmust

Somepeoplethinkthatsmokingcanhelphimrelax.Infact,smokingisreallyunhealthy.Doyouknowthatthereareover4000chemicalsincigarettes?Thesechemicalsarebadforourbodies.Theycancausecancerandotherdiseases.Thesmokefromcigarettesharms

notonlysmokersbutalsootherpeople.It’scalled“second-handsmoke”anditcanbemoredangerousandhashigherrisks.Smokersshouldn’tusesmokingtohelpthemrelax.Theymustgiveupsmoking

assoonaspossible.infact事实上causecancer致癌notonly...but(also)...不仅...而且...second-handsmoke二手烟giveup

放弃giveupdoingsth.

放弃做某事usesth.todosth.=usesth.fordoingsth.

用某物做某事as...aspossible尽量...地assoonaspossible尽快尽量多_______________________尽可能早_______________________asmany/muchaspossibleasearlyaspossibleThesmokefromcigarettesharmsnotonly

smokers

but（also）

otherpeople.香烟产生的烟雾不仅对吸烟者有害，也对其他人有害。notonly...but(also)...不但...而且...

notonly

A

but(also)B由B决定谓语动词的数

Notonlyhe

butalsoyou________(like)watchingfootball

matches.Notonlyyoubutalsohe________(like)watchingfootballmatches.1.Heislearning______________________________.

他不但在学英语，而且还在学日语。ShespeaksRussian____

_____inclass__________athome.她在课堂上和家里都说俄语。not

onlybut(also)likelikesnot

only

Englishbut(also)Japanese返回Smokersshouldn’tusesmokingtohelpthemrelax.吸烟者不应该用吸烟来帮助他们放松。用某物做某事：

usesthtodosth

或usesthfordoingsth翻译：我用铅笔盒放笔：____________________________________________________________Iuseapencil-box

toput

pens.Iuseapencil-box

forputting

pens.返回ReviewGrammarModalVerbs情态动词(Ⅱ):

must/mustn’t;may;canYou_________throwlitteraround.Hethinkssmoking______helphimrelax.It_____evencausecancer.I_____askhimtogiveupsmoking._______Iborrowyournewspaperandshowittomyfather?canMaymustn’tmustcan1.定义：

情态动词是表示说话人的情绪，态度或语气的动词。2.常见的情态动词有：can/could(能够)

,may/might(可能)

,shall(...好吗？要不要...?),should(应该),will/would（将要）,must（必须）,need（需要）

3.观察使用原则：

①Ican,hecan,Tomcan,Lucycan...②hemust,theymust,Tommust,TomandLucymust...③caneat/jump/run/sleep....p1211.定义：

情态动词是表示说话人的情绪，态度或语气的动词。2.常见的情态动词有：can/could(能够)

,may/might(可能)

,shall(...好吗？要不要...?),should(应该),will/would（将要）,must（必须）,need（需要）

3.使用原则：

情态动词后跟____________________。情态动词无______________________。

变否定:情后加not动词原形人称和数的变化找出下列句子的错误并改正。1.Lucycansdance.2.Tomshouldgoeshomenow.3.Theymustsfinishtheirhomeworkontime.4.Theboyshouldshasarestathome.cangomustshouldhavecanp1221.表示能力

Icanplayfootball.我能踢足球。

过去式：could

IcouldswimwhenIwas6yearsold.

我六岁时能游泳。2.表示请求,允许

CanIuseyourpen?我能用你的笔吗？3.表示可能 Itcan’tbetrue!那不可能是真的。may---mightp122Can/May/Could/MightI...?我可以/我能...吗？都可表示请求对方允许。mustp1221.表示必须、应该（义务）

Youmusttakecareofyourparents.你必须照顾你的父母。2.mustn't=mustnot不许,禁止

Youmustn'tplayonthestreet.你不能在街上玩。3.mustbe表示推测，意为“一定，准是”Shemustbeathome.她一定在家。注意：回答含有must的疑问句时，否定回答要用don’thaveto或needn’t,不能用mustn’t.

—MustIfinishmyhomeworkbeforewatchingTV?—Yes,youmust.—No,youneedn’t/don’thaveto.—No,youmustn’t.mustbe:一定是can’tbe:不可能是maybe:可能是表推测的三个用法：YoumustbeJohn！你一定是John！Youcan'tbeJohn!Johnistallerthanyou.你不可能是John,John比你高。Tomorrowmaybeasunnyday.

明天可能是晴天。Exercises用

mustmustn’tmaycancan’t

填空1.

______youlendyourpentome?2.

You___________throwlitteraround.3.

He_______beourteacher,Isawourteacherintheofficejustnow.4.

You_________takegoodcareofyousister.5.

You________borrowmybike.Canmustn’tcan’tmustmayReviewFunctions_______uplateisbadforyourhealth.

Howterrible!

It’s______foryourhealth.Don’tread____thesun.Itwillkeepyou______duringtheday.StayinggoodinactiveExercises1.Drinkingmilkaregoodforyourhealth.

_________

2.Eattoomuchmaymakeyoufat.

_________3.Readinthesunisbadforyoureyes.

_________4.Runningisagoodsport.

_________

改一改isEatingReadingExercisesTestingHowHealthyYouAre1.Choosetheanswertoeachquestionaccordingtoyourlifestyle.()1.Howoftendoyouwalktoschool?A.Never.B.Sometimes.

C.Always.()2.Howoftendoyoueatcandy?A.Often.B.Seldom.

C.Never.()3.Howlongdoyouusuallysleepatnight?A.Lessthan7hours.

B.Morethan10hours.

C.7-10hours.()4.Howoftendoyouexercise?A.Lessthanthreetimesaweek.

B.Threetosixtimesaweek.C.Everyday.()5.Howoftendoyoueatfruitandvegetables?A.Never.B.Seldom.