Unit 2 Topic 2-Section D課件仁愛(ài)版英語(yǔ)八年級(jí)上冊(cè)

Topic2Imustaskhimtogiveupsmoking.SectionDUnit2KeepHealthyLanguagegoalsBytheendoftheclass,youwillbeableto1.Masterthefollowingwords,phrasesandsentences:Words&phrases：

shower,fact,infact,unhealthy,chemical,cigarette,body,disease,harm,smoker,second-hand,risk,possible,as…aspossible2.Mastertheusageofmay,mustandcan.applesorangeschickenchocolatebananahamburgerLookandsaymeaticecreamriceLookandsaysausageeggplantwatermelonbeeftomatoessandwichesstrawberrycabbagepotatochipsLookandsayAskandanswerIusuallyhave…forbreakfast.Whatdoyouusuallyhaveforbreakfast?AskandanswerIusuallyhave…forlunch.Whatdoyouusuallyhaveforlunch?AskandanswerIusuallyhave…fordinner.Whatdoyouusuallyhavefordinner?WhatmothersaidtoeatMakesentenceswithshould,shouldn’t,hadbetter,hadbetternot,must,mustn’t.1.We_____eat

more

vegetables.2.We______eatmorefruitandlessmeat.3.We_____eattoomuchicecreamfordinner.4.We_____eattoomuchcandyorchocolate.5.---ModalVerbs(Ⅱ):must/mustn’t;may;canYou

_________throwlitteraround.Hethinkssmoking

______helphimrelax.It_____evencausecancer.I_____askhimtogiveupsmoking._______Iborrowyournewspaperandshowittomyfather?canMaymustn’tmustcanGrammarGrammar情態(tài)動(dòng)詞can，may和must1.can表示能力Hecandraw,buthecan'treadastory.他會(huì)畫(huà)畫(huà)，但不會(huì)讀故事。表示可能Thegirlcan'tbeAmybecauseshewenttostudyin

anotherschool.那個(gè)女孩不可能是埃米，因?yàn)樗D(zhuǎn)學(xué)了。表示請(qǐng)求，允許CanIwalktoschoolwithyou?我可以和你一起走去學(xué)校嗎？Grammar2.may表示可能—Ididn'tseeJackintheclassroom.我沒(méi)在教室看見(jiàn)杰克?！狧emayplaybasketballontheplayground.他可能在操場(chǎng)打籃球。表示征求同意

(此時(shí)可以與can互換使用，但

may語(yǔ)氣更委婉)—MayIwatchTVnow?我現(xiàn)在可以看電視嗎？—Yes,youmay/can.是的，你可以?！狽o,youmaynot/can't.不，你不可以。Grammar3.must表示必須，義務(wù)Youmuststudyhard.你必須努力學(xué)習(xí)。肯定形式表示推測(cè)—Whoisknockingonthedoor?誰(shuí)在敲門(mén)？—ItmustbeJane.一定是簡(jiǎn)。否定形式表示不許，禁止Youmustn'ttellalie.不許你撒謊。Grammar【提示】1.

表示否定的推測(cè)用can't，而不用mustn't。e.g.Thatcan'tbemybookbecauseBob'snameis

onit.

那不可能是我的書(shū)，因?yàn)轷U勃的名字在上面。2.

用must提問(wèn)的句子，其否定回答用needn't或

don'thaveto，而不能用mustn't。e.g.—MustIturnoffthelightnow?我現(xiàn)在必須關(guān)燈嗎？—No,youneedn’t/don'thaveto.不，不必。_______uplateisbadforyourhealth.Howterrible!It’s______foryourhealth.Don’tread____thesun.Itwillkeepyou______duringtheday.inStayinggoodactiveFunctionsListenandnumberthefollowingpictures.Thenmakesentenceswiththestructuresinthebox.123456should/shouldn’t…Wemust/mustn’t…Weshouldtakeshowersoften.Weshouldwashthehandsbeforemeals.Weshouldoftenopenthewindowtokeeptheairfresh.Wemustn’tdrinksourmilk.Weshouldtidyourroomsandoftensweepthefloor.Wemustn’tspitinpublic.22Completethepassagewiththecorrectwords.

Somepeoplethinkthatsmoking________(must/can)helphimrelax.Infact,smokingisreally__________(healthy/unhealthy).Doyouknowthatthere______(is/are)over4000chemicalsincigarettes?Thesechemicalsare_______(good/bad)forourbodies.They_____(must/can)causecancerandotherdiseases.Thesmokefromcigarettesharms____________(only/notonly)smokersbutalsootherpeople.It’scalled“second-handsmoke”andit______(can/can’t)bemoredangerousandhashigherrisks.Smokersshouldn’tusesmokingtohelpthemrelax.They______(must/mustn’t)giveupsmokingassoonaspossible.canunhealthyarebadcannotonlycanmust1.Weshouldoftenopenthewindowtokeeptheairfresh.我們應(yīng)該經(jīng)常開(kāi)窗保持空氣清新。

keep后接形容詞。意為“保持（某種狀態(tài)）”，keep作系動(dòng)詞，也可以用be替換。如：keepquite!=bequite!請(qǐng)保持安靜！【擴(kuò)展】keepsb./sth.后接形容詞/動(dòng)名詞表示“讓某人/某物處于某種狀態(tài)”。如：Keepthewindowsopen,please.請(qǐng)把窗戶(hù)打開(kāi)。Don’tkeephimwaiting.不要讓他一直等著。Languagepoints2.Smokersshouldn’tusesmokingtohelpthemrelax.

吸煙者不應(yīng)該用吸煙來(lái)放松自己。

usesthtodosth.意為“用....去做....”

如：Weoftenusethedictionarytolookupthenewwords.

我們經(jīng)常使用詞典去查閱新單詞。Languagepoints3.Infact,smokingisreallyunhealthy事實(shí)上，抽煙真的是不健康的。Infact事實(shí)上

Infact,Ilikeplayingcomputergames.事實(shí)上，我喜歡玩電腦游戲。Infact,Iwanttoeatanicecream.事實(shí)上，我想吃一個(gè)冰激凌。Languagepoints4.Theymustgiveupsmokingassoonaspossible.他們必須盡可能快的戒煙。giveupsth/doingsth放棄做某事assoonaspossible盡可能快的

asmuchaspossible盡可能多的assmallaspossible盡可能小的As+形容詞+aspossible可以與as...asonecan互換使用。如：Pleasewritedownyouranswerasfastaspossible.=Pleasewritedownyouranswerasfastasyoucan.請(qǐng)盡可能快的寫(xiě)下你的答案。LanguagepointsExercisesI.根據(jù)句意及首字母提示完成句子。1.Xiaomingtakesas__________beforehegoestobedeverynight.2.F__________speaklouderthanwords.3.Weshouldexercisealottokeepourb__________healthyandstrong.4.Smokershavehigherr__________ofgettinglungcancerthanthosewhodon’tsmoke.5.Iwanttogotherebyplaneifp__________.showerFactsbodyriskspossibleExercisesII.根據(jù)漢語(yǔ)提示完成句子。1.她不僅很會(huì)彈鋼琴，而且還會(huì)作曲。Shecan____________________playthepianowell,____________________writemusic.2.你最好盡快把那本書(shū)給我。You’dbettergivethebooktome________________________________________.3.他不得不放棄在中國(guó)教英語(yǔ)，因?yàn)樗孛绹?guó)了。Hehasto______________________________English.inChina,becausehe’sreturningtoAmerica.4.我原以為大衛(wèi)是在學(xué)校，但事實(shí)上他在網(wǎng)吧。IthoughtDavidwasatschool,but____________________hewasinthenetbar.5.許多人不應(yīng)該用喝酒來(lái)幫助他們放松。Manypeopleshouldn’t__________drinking____________________themrelax.not

only