Unit5Grammar课件牛津译林版英语八年级上册

Unit5Wildanimals

GrammarRevisionPandasmaynothaveaplacetoliveorfoodtoeat.Ifwedonothing,soontheremaybenoneleft.Usingmaytotalkaboutpossibility用may来谈论可能性1.may表示推测可能性，意为“可能，或许”，可用于肯定句和否定句中。Itmayraintomorrow.Shemaybeathome.肯定句：may＋动词原形Itmaynotraintomorrow.Shemaynotbeathome.否定句：maynot＋动词原形maynotdo...“可能不......”---WhereisJohn?---Hemaybesleepingathomenow.maybedoing“也许正在做...”,用于现在进行时的句子中。Inthezoo1.Theelephantisgoingtowardsthewater.It__________(need)abath.mayneed2.Thelittleboyiscryingbecausehesawthetigers.He________(be)afraidofthem.3.Icannotgonearthelionsandtigers.They__________(hurt)me.4.Thebabypandaisnotdrinkingitsmum’smilk.It_____________(notbe)hungry.maybemayhurtmaynotbe5.Themonkeysarejumpingaround.They_______________(beplaying)witheachother.6.Thehorseisstandingwithitseyesclosed.It______________(besleeping).maybeplayingmaybesleeping/kləʊzd/adj.关闭的openv.打开 closev.关闭openadj.打开的；开放的，营业的. beopencloseadj.亲密的 closefriendsclosedadj.关闭的 ...beclosed---Haveyouheardthatsomebadthingswouldhappenin2050?---Don’tworry!Thenews______betrue.A.mustn’t B.maynotC.needn’t D.may---一些糟糕的事情会在2050年发生，你听说了吗？---不要担心！这个消息可能不是真的。maynot表示“可能不”；A.mustn’t表示“禁止，不允许”，翻译不通顺。C.needn’t=neednot.这是need作情态动词的否定形式，“不必”，翻译不通顺。D.may“可能”，和“不用担心”矛盾。TheBrowns______inthecinema.Isawtheminthesupermarkettenminutesago.A.maybenot B.needn’tbeC.mustn’tbe D.can’tbe布朗一家人不可能在电影院。我十分钟前在超市看见他们了。can作情态动词，也可以表示推测，“可能”，常用于否定句和疑问句中，此时，can’t(cannot)表示“不可能”。A.顺序错误，应改为maynotbe;B.表示“不必”，翻译不通顺。C.mustn’t表示“禁止，不允许”，翻译不通顺推测可能性大小：must>can>may>might（大家动笔把这个记下来）2.may表示请求、许可，“可以”。此时，may比can正式。①Youmaygohomenow.②MayIuseyourcomputer?以May引导的一般疑问句，May后多用第一人称(I/We)和问答方式：---MayIsmokehere?---Yes,please./Yes,youmay./Yes,youcan.(肯定回答)（否定回答)---No,youcan’t.(一般性问题)---No,youmustn’t.(涉及法律和正式规定)根据语境，判定用哪个否定回答。3、may表示希望、祈求、祝愿。

结构为：May＋主语＋谓语＋其他。e.g.Mayyouhaveagoodtime.祝你过得愉快。Mayyousucceed!祝你成功！Mayyoubehappy!祝你开心！1、当主语是第一人称时，may引导的一般疑问句的否定回答用can’t和mustn’t,表示“不可以”和“禁止”。2、“MayI...?”较正式，语气上更委婉。口语中可以用“CanI...?”表示请求许可。“CouldI...?”也可表示请求许可，语气比“CanI...?”更委婉。但是，用“CouldI...”提问时，回答要用can.e.g.---CouldIuseyourpen?---Yes,youcan./No,youcan’t.3、may一般不用于反意疑问句。

may表示“可能”时，相当于副词perhaps,maybe1.Hemaybeathomenow.=Perhapsheisathomenow.=Maybeheisathomenow.2.Shemaynotbehappynow.=Perhapssheisnothappynow.=Maybesheisnothappynow.注意：副词perhaps,maybe无法做谓语，但是may(not)＋动原

做谓语。1.Don'tdrivetoofast,oryou_____(可能)haveanaccident.2.Youhadbetteraskthepoliceman.He______(可能)knowtheplace.3.Hemaybeastudent.（同义句转换）=_______heisastudent.4.---MayIparkmycarhere?----No,you______.(can't/mustn't).Youshouldparkitinthecarpark.5.---DidyouhearJuliasingingintheroomlastnight?----No,it______beJulia.Shehasgoneto(已经去了)Paris.A.maynotB.can'tC.needn'tD.couldn't中考链接maymayMaybemustn'tBBatscan’tsee,buttheycandecidetoflytherightwaywiththehelpoftheirmouthandears.bat/bæt/verbs+to-infinitives(todo不定式)decidetodosth.决定做某事

当句子中已经有谓语动词,而我们又要表达不止一个动作概念时,其余的动词可以使用非谓语形式表达。动词不定式就是动词的一种非谓语形式,其基本形式是“to+动词原形”。如：（不用抄，了解即可）Hewantstoplayfootballafterclass.他想课后踢足球。Mymotherforgottoturnoffthelightsyesterday.我妈妈昨天忘记关灯了。注意:（记笔记）动词不定式在句子中不作谓语,因此没有人称、单复数和时态的变化。Weoftenuseto-infinitivesaftertheseverbs.

agreechoosedecidehopelearnplanpreparewantlikestartbeginfailwishtryrememberforgetYoumustpromisenottobelateagain.你必须保证不再迟到了。Hedecidednottogohome.他决定不回家了。注意：（记笔记）动词不定式的否定形式是“notto+动词原形”。Idon’tknowwheretofindmykeys.CanyoutellmehowtoworkoutthisMathsproblem?疑问词＋todo，是名词短语，可以放在句中，做动词的宾语。remembertodosth.记得去做某事rememberdoingsth.记得做过某事区分forgettodosth.忘记去做某事

forgetdoingsth.忘记做过某事e.g.Tom,记得课后和我们一起打篮球。Tom,remembertoplaybasketballwithusafterclass.我记得上个月写了一封信给你。Irememberedwritingalettertoyoulastmonth.stoptodosth.停下(正在做的)事去做(另一件)事stopdoingsth.停止做(正在做的)事e.g.让我们停下来休息一下。

Let’sstoptohavearest.

不要说话。老师来了。

Stoptalking.Theteacheriscoming.区分1.enjoy enjoydoingsth.

Kitty

enjoysdancing.let letsb.dosth.

Theteacher

letshimread

loudly.3.practise practisedoingsth.

Youshould

practisespeaking

often.Wedon’tuse‘to’aftertheseverbs.4.makemakesb.dosth.

Thejoke

makesmelaughandlaugh.

5.help

helpsb.do/todosth.

Sheoften

helpsme(to)carry

water.6.finishfinishdoingsth.

Youmust

finishdoing

yourhomeworkontime.Dad:Doyouknowanythingspecialaboutwildanimals?Amy:Yes,Dad.Forexample,dolphinsareclever.Theycan_________________

(learn,workout)easy

Mathsproblems.Dad:Whatdoyouknowaboutbats?Amy:Batscan’tsee,buttheynever____________(fail,fly)therightwaywiththehelpoftheirmouthandears.Dad:Didyouknowthatbeesnevergetlost?Amy:Yes.Beesalways_________________________(remember,comeback)thesamewayastheygo.Dad:Whatdoyouknowaboutsquirrels?Amy:Theyalways______________(begin,save)somefood

beforewintercomes.Dad:Yes,butsometimestheyforgetwheretofindthefood.learntoworkoutfailtoflyremembertocomebackbegintosaveExercises1.Youmust_____(listen)totheteachercarefullyinclass.2.Maryagreed_____(go)shoppingwithLucy.3.Look!Theboys____________(play)football.listentogoareplayingExercises4.Maydecid