Unit 2 Topic 3Section D课件仁爱版英语八年级上册

Topic3Mustweexercisetopreventtheflu?SectionDUnit2KeepHealthyLanguagegoalsBytheendoftheclass,youwillbeableto1.Masterthefollowingwords,phrasesandsentences:Words&phrases：

stretch,equipment,choose,instead,insteadof2.Mastertheusageofmust&haveto.3.

UseReflexivePronounsQuickmindn.设备，器材equipmentadv.代替，反面insteadv.选择；挑选choosen.经理，活力energy另一方面ontheotherhand代替insteadofShouldweneedtowarmupbeforerunning？Yes,weshould.AskandanswerIsitnecessaryforustobuygoodexerciseequipment？No,itisn’t.Shouldwespendalotoftimeexercising?No,weshouldn’t.ModalVerbs(Ⅲ):must/haveto______weexercisetopreventtheflu?Yes,wemust.No,wedon’t_______./No,we_______.Andyou_____doyourhomeworkfirst.I______dosomecleaning.Musthavetoneedn’tmusthavetoGrammar情态动词must与havetomust和haveto用作情态动词，都有“必须”的含义，两者有时可以互换使用。不过两者也各有其“独特”之处。使用场合不同：must表示主观上认为有义务、责任而“必须”做的事，是说话人的主观看法；也用于肯定的推测，意为“一定，必定”。而

haveto则强调由于客观原因而不得不做某事，是客观上的“必须”，常译为“不得不”。e.g.1.Imustgohomenow.我现在必须回家了。2.Youmustbehungryafterthelongwalk.走了这么长的路，你一定饿了。3.Mymotherisill,soIhavetogonow.我妈妈病了，所以我现在不得不走了。人称和时态的变化不同：must

没有人称和时态变化；而

haveto有人称、时态变化，在一般现在时中，第三人称单数用

hasto，其它人称用

haveto，一般过去时中用

hadto。e.g.1.Lucymustgotobedbefore11.露西必须11点前睡觉。2.Hehastostayinbedfor3or4daysbecause

ofhisillness.因为他的病，他不得不卧床3到4天。疑问句的答语不同：对must开头的一般疑问句作肯定回答时用must，否定回答则用needn't或don't/doesn'thaveto；包含haveto的句子变为一般疑问句或否定句，要根据句中时态由助动词do

的相应形式来构成。肯定、否定回答也要借助助动词do的相应形式来完成。e.g.1.—MustIreturnthebooktoday?我必须今天还书吗？—No,youneedn't.Youcandoittomorrow.不，你不必。你可以明天还。—Yes,youmust.是的，你必须今天还。2.—Doesshehavetohavepianolessonsevery

weekend?她每周末都得上钢琴课吗？—Yes,shedoes.是，她每周末都得上钢琴课。—No,shedoesn't.不，她没必要每周末都上钢琴课。注：must的否定形式mustn't表示“不许，禁止”。

句型转换。(1)Ihavetogotoschoolonfoottoday.(改为一般疑问句)_____you_____togotoschoolonfoottoday?(2)Jimhastostayathometolookafterhismother.(变为否定句)Jim_____________tostayathometolookafterhismother.(3)Doyouhavetocookforyourself?(否定回答)____,________.DohaveNoIdon’tdoesn’thave(4)MustIfinishmyhomeworknow?(否定回答)____,____________.

或____,____________________.(5)We’dbettergotherebybike.(改为否定句)We___________________gotherebybike.Noyouneedn’tNoyoudon’thavetohadbetternotReflexivePronounsFirstpersonSecondpersonThirdpersonSingular________yourselfhimself___itselfPluralourselves_____________________PersonNumbermyselfyourselvesherselfthemselvesGrammar1.用适当的反身代词填空。①Icooked______amealandthenIwatchedTV.②Ifyoudon’thelphim,he’llhavetodoitallby_________.③Iputthefoodonthetableandaskedthemtohelp__________.④JackandPeter,didyoucleantheroom________?⑤Becarefulwiththatknifeoryou’llcut________.⑥Johnhurt______whenhewasplayingfootball.myselfhimselfthemselvesyourselvesyourselfhimself_____Iaskyousomequestions?Sure,go______.I’mafraidheis______rightnow.OK,I’llringhim______later.I’d______tospeaktoDr.LiYuping.CanI_______amessage?Pleasetellmyfather______________thetalktomorrowafternoon.Youshould______notosmokinganddrinking.MayaheadbusylikeleavenottoforgetsayupFunctionsThemoreexercise,thebetter.()Weshouldstopexercisingwhenwearehurt.()Drinkingwhileplayingsportsisbadforourhealth.()Exercisinginagymisnotagoodidea.()Tickthefollowingideasyouthinkarecorrectbeforereading.Thenreadthepassageandcheck.HowtoExerciseWellWarnup.Itisimportanttowarmupbeforeyouexercise.Youneedtostretchyourlegs,arms,backandneckbeforeyoudoanydifficultactivitieslikerunning.Findgoodplacetoexercise.Youdonotneedtospendalotofmoneyexercise.Youcanrunorplaysportsinaparkorinyourschoolgym.Youdon’tneedtobuyexerciseequipmentforyourhome.Justgetyourbodymoving!Don’tworktoohard.Chooseasportthatyouenjoyandthenyourexercisewillbefuninsteadofwork.Also,youonlyneedtoexerciseafewtimeseachweek.Ifyouexercisefor30minuteseachtime,youwillstayhealthy.Drinkenoughwater.Itisimportanttodrinkwaterwhenyouexercise.Yourbodyneedsthewaterforenergyandforkeepingcool.Becareful!Ifyouhurtyourselfwhileyouareexercising,restuntilyoufeelbetter.Exercisingwhenyouarehurtisbadforyourhealth.1.needtodosth.需要做某事每个人都需要天天运动。Everyone___________exerciseeveryday.2.spendtime/moneyonsth.花费时间金钱在某事上

spendtime/moneydoingsth.花费时间金钱做某事①我们不应该花费太多时间玩游戏。Weshouldn’t_______toomuchtime________computergames.②Ispent30yuan______thisbook.needstospendplayingonLanguagepoints3.buysth.forsb.为某人买东西4.insteadof代替e.g.我会代替你去参加晚会。Iwillgototheparty_________you.5.Restuntilyoufeelbetter.until：直到e.g.我做作业直到我妈妈回家。Ididmyhomework_______mymothercamehome.insteadofuntilLanguagepointsI.用方框中所给单词的适当形式填空。1.Manystudentsinmyclass__________togotoschoolbybike.2.Thereisalotof__________intheparkforpeopletoexercisewith.3.Beforeyouplayfootball,youshould__________yourlegstowarmyouup.4.Hedoesn’twatchTVintheevening.__________,hereadshooks.5.Thechancewillnotfindyou__________.Exercisesstretch,choose,equipment,instead,itchooseequipmentstretchInsteaditselfExercisesII.单项选择。()1.—MustIgetupearlytomorrow?