人教新课标英语必修3-Unit-2-Health课件

HealthyeatingUnit2GrammarTolearntheuseofmodalverbs语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语言规则和语法规律。Underlinethesentencescontainingmodalverbsinthereadingpassageandusethefunctionwordsbelowtoexplainthemeaningofthemodalverbs.IntentionDutyPermissionPossibilityGuessingAbilitypossibilitypossibilitypossibilityguessingintentionintentionabilitydutyintentiondutypossibilitypossibilityabilityModalverbsareusedtoexpressthespeaker’smeaningofintention,duty,permission,guessing,ability,etc.Lookatthefollowingsentences.Icanwellrememberthattherewasatimewhenadeepbluesky…(必修1)2.MayIaskyousomequestionsaboutthemodernOlympics?(必修2)3.OnthefootballteamI’mastrikersoIhavetobeabletorunveryfast.(必修2)Havealook1.I____wellrememberthattherewasatimewhenadeepbluesky…2.____IaskyousomequestionsaboutthemodernOlympics?3.OnthefootballteamI’mastrikersoI_______beabletorunveryfast.4.Thenbylunchtimethey______allbesold.5.Bynowhisrestaurant_______befullofpeople.canMayhavetowouldoughttogoReady?6.What______havehappened?7.Nothing______bebetter,…8.Somethingterrible_____havehappenedif…9.He______notbelievehiseyes.10.Perhapshe______gotothelibraryandfindout.couldcouldmustcouldshould以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解，下面就让我们根据之前练习的考察情况进一步选择讲解该语法项的重难点。情态动词Ⅱ1.oughtto意为“应当；应该”，意思接近于should，但oughtto语气更强。

Youarehisbrothersoyououghttotakecareofhim.2.表示建议或劝告。

Weoughttomakeacarefulplanbeforewestartthework.3.表示推测。

Henryoughttobetherebynow.Helefthomeatsix.一、oughtto/oughtnotto【拓展】oughttohavedone对已发生的情况表示“责备或不满”，表示“本应该做某事”。Yououghttohavetoldhimnottogoalone.◆否定式为oughtn’tto或oughtnotto。Hisdoctorsaidtohimthatheoughtn’ttosmokesomuch.◆疑问式是将ought提前。OughtItohandinthehomeworktoday?◆反意疑问句的疑问部分用should或ought均可。Weoughttogobyplane,shouldn’t/oughtn’twe?haveto表示“不得不；必须”，有人称、数和时态的变化。在口语中可用havegotto代替haveto。It’sdarknow.Ihavetogohome.◆否定形式是don’thaveto，相当于needn’t。Youdon’thavetogoifyoudon’twantto.◆疑问式为Do/Does/Did+主语+haveto…?Doyouhavetowearuniformsatschool?二、haveto/don’thaveto【拓展】must与haveto的区别两者都表示“必须”，但must常表示说话人的主观看法，而haveto一般强调客观需要。haveto有人称、数和时态的变化，而must则没有。Youmusttakegoodcareofher.Ihavelostmypen,soIhavetobuyone.mustn’t表示“禁止；不准”；needn’t表示“不必；不需要”。Youmustn’ttellhimaboutit.It’sasecret.Youneedn’ttellhimaboutit.Hehasknownit.【拓展】用must提问时的否定回答用needn’t或don’thaveto。—MustIfinishmyhomeworknow?—No,youneedn’t/don’thaveto.三、mustn’t/needn’tPracticeChoosesuitablemodalverbsfrombelowtocompletethefollowingdialogues.ought/oughtn’ttoshould/shouldn’tmustn’tneedn’t(don’t)havetowillcan/can’thavetoshouldshouldn’tneedn’tdon’thaveto/needn’t/shouldn’twillP132ought/oughtn’ttoshould/shouldn’tmustn’tneedn’t(don’t)havetowillcan/can’thavetomustn’toughttoshould根据汉语提示，完成下列英语句子。1.那个粗心的人因超速收到了一张罚单，他本不应该开那么快。Thecarelessmanreceivedaticketforspeeding,he_______________sofast.2.他们应该明天来，是吗？Theyoughttocometomorrow,__________?3.—我必须要参加这次会议吗？

—你不必。你可以让汤姆替你去。

—MustIattendthemeeting?—No,you________________.YoucanaskTomtogoinstead.oughtn’ttohavedrivenoughtn’tthey/shouldn’ttheyneedn’t/don’thaveto4.不该做的事我们都做了，而该做的事都没做。

Wehavedonethingswe____________andhaven’tdonethingswe_______________.5.—我该不该把发生的一切都告诉他？

—不行！他会生气的。

—_______________tellhimallthathashappened?

—No,you______________!Hewillbeangry.oughtnottohavedoneoughttohavedonemustn’tOughtItoReview复习下列情态动词：oughtto/oughtnotto/haveto/don’thaveto/mustn’t/needn’tⅠ.用oughtto,oughtnotto,haveto,don’thaveto,mustn’t,needn’t填空。1.You__________goacrosstheroadwhenthetrafficlightisonred.2.You__________buyagift,butyoucanifyouwantto.3.Asstudents,we_____________putmoreenergiesintostudy.4.He_____________workovertimeinordertofinishthetaskbeforethisSaturday.mustn’t/oughtnottoneedn’t/don’thavetooughttohasto5.Tom______________havetoldmeyoursecret,buthemeantnoharm.6.Thesunisshiningbrightlyinacloudlesssky;it______________beafinedaytoday.7.Youdon’tlookwell.You_____________gotoseethedoctor.8.Adograninfrontofmymother’scarandmymother______________stopveryquickly.oughtnottooughttooughttohadtoI_______________(得接受)yoursuggestion.2.You_________________(你不能来这儿)withoutpermission.3.You_________________(应当去照顾)yourbrother.4.Ithinkyou_________________(应当去看)thedoctor.

II.Translatethefollowingsentences.havetoacceptmustn’tcomehereshouldtakecareofoughttogotosee5.Theteachertoldthestudentsthatthey____________________________________(不应该在课堂上沉默不语)allthetime.6.You______________________(就得不到我的支持)ifyoudosuchathing.7.—Iwaitedforthetrainfortwohoursatthestationthismorning.—Well,you________________________(本来没有必要那么早去的).8.“You_____________________(你千万不要再喝酒了),”thedoctorwarnedhim.mustn’tdrinkanymoreoughtnotto/shouldn’tkeepsilentinclassshallnotgetmysupportneedn’thavesetoffsoearlyIII.阅读下面的对话，按照句子结构的语法性和上下文连贯的要求，在空格处使用合适的情态动词填空。'Doyoucallthatahat?'Isaidtomywife.'You_______besorudeaboutit,'mywifeansweredasshelookedatherselfinthemirror.Isatdownononeofthosemodernchairswith