Unit3grammarUnit3grammarPassivevoice&modalsPassivevoice&modalsPointouttheverb,thesubjectandtheobjectinthefollowingsentences:Wekeptfoodinthefridge.Wemustclosethewindowsandthedoor.SV.O.SV.OFoodwaskept(byus)inthefridge.Thewindowsandthedoormustbeclosed.Whendoweusethepassivevoice?Manyhouseswillbebuilthere.1.不知道或没必要指出动作的执行者。Thesong“TheEastisRed”waswrittenbyapoorpeasant.2.强调动作的承受者。TheplanwassupportedbythosewhowishedtohavemorechancestospeakEnglish.3.动作的执行者有较长的修饰语。Youarerequestedtoattendthemeeting.4.出于礼貌,不愿意说出动作的执行者。被动语态的几种时态被动语态的几种时态一般现在时：be(is,am,are)+done一般过去时：be(was,were)+done现在进行时：be(is,am,are)+being+done过去进行时：be(was,were)+being+done现在完成时：have(has)+been+doneWecarryouttheproject.Inpairs,changethefollowingsentencesintothePassive.Payattentiontothetense.1.Stressisaffectingmyhealth.Myhealthisbeingaffectedbystress.P37Ex8P37Ex82.Theyaremovingpeopleoutofhehouses.3.Hehasalreadyinventedthemini-helicopter.Peoplearebeingmovedoutofthehouses.Themini-helicopterhasalreadybeeninventedbyhim.4.Theyhaveputouttheforestfire.5.HewasrepairingthecarwhenIgotthere.Theforestfirehasbeenputoutbythem.ThecarwasbeingrepairedwhenIgotthere.6.Theyweredecoratingthehousewhentheaccidenthappened.Thehousewasbeingdecoratedwhentheaccidenthappened.1.haveto2.don’thaveto3.can4.can’t5.oughtto6.oughtnottoa)notnecessaryb)necessaryc)notallowed/notpossibled)allowed/possiblee)notadvisablef)advisablematchthewordstotheirmeanings情态动词复习MustMust（1）表示必须要做的事回答must引导的疑问句时，通常不用mustn’t，而用needn’t或don’thaveto（没有必要）Mustwestayheretill5p.m.?我们一定要在这里呆到5点钟吗？—Yes,you__________.（是，一定要）—No,you___________.(不，没必要)mustneedn’t（2）表推测，而且表示相当有把握的肯定的推测，其否定的推测形式为can’t。He___________tellinglies.(他肯定在撒谎)He____________tellinglies.（他不可能在撒谎）mustbecan’tbemust与haveto的区别must与haveto的区别mustn’t表示“禁止，绝对不可以，不许”；don’thaveto表示“不必”You___________parkhere.(禁止/不准在那泊车)You______________handinthepaperbeforethebellrings.（你没有必要在铃响前交试卷）mustn’tdon’thavetoImissedthelastbus,soIhadtowalkbackhome.(客观上必须这样做，不得不做）Wemustdoexerciseeverydaytokeepfit.(主观上要这样做）翻译：我们不得不早早起床,要不就会迟到。Wehavetogetupearlyeveryday,orwewillbelateforschool.havetoVSmust必须（necessary）don’thaveto不必mustn’t禁止Youdon’thavetogotothemeeting.你没必要参加这个会议。Youmustn’ttellhimmysecret.你一定不能把我的秘密告诉他。don’thavetoVSmustn’tshouldVSoughtto应该(advisable)should更常用，一般情况下可通用。翻译（肯定）地板每天都要清扫。Theflooroughtto/shouldbecleanedeveryday.（否定）你不应该总是玩电脑。Youshouldn’t/oughtnottoplaycomputergamessooften.canvscan’tcanvscan’tcan表示允许或请求许可（allowed），或表示某事可能发生（possible）can’t表示禁止（notallowed）或不可能(notpossible)Youcangooutafteryouhavefinishedyourhomework.(许可)YoucanbuyCDsatthemarket.(可能的)Youcan’tgoouttonight.(禁止)Youcan’tmakebreadwithoutflour.(不可能)ShowtimeShowtime任务展示小组点评小组被动语态的几种时态练习G2G1被动语态的即时练习G4G3选择题1-6G6G5选择题7-12G8G7展示的同学：动作迅速，统一组内答案，板书工整点评的同学：言简意赅，先评对错，给出分数，再拓展总结。非展示点评的同学：整理学案，...
