Grammar八年级英语上册【精品课件】-3

2022-2023学年八年级英语上册精品课堂Unit5.3WildAnimalsGrammarGuess:Whatwildanimal

isit?Itmaybeazebra.Itmaybe

apanda.Itmaybeasnake.It’sblackandwhite.Itmaybeaspider.Itmaybe….Thepandasareindanger.Ifwedonothing,soonthere_______________________________maybenoneleft.Lead-in:

maynothaveaplacetoliveorfoodto

eatLead-in:Lead-in:Whatdoes“may”mean?Itmaybeazebra.Itmaybe

apanda.Itmaybeasnake.Itmaybeaspider.Thepandasareindanger.Ifwedonothing,soonthere_______________________________maybenoneleft.

maynothaveaplacetoliveorfoodto

eatPresentation:Weuse_________tosaysomethingispossible.maymaybesthmaybedoingsth…maydosth可能是…可能正在做某事可能做某事情态动词may除了可用来表示请求许可，还可以用来表示猜测某件事发生的可能性，表示“也许，可能”，多用于肯定句和否定句中。TheymaybeeatingbamboofromChina.Hemayworkasavolunteer.Itmaybeaspiderinthepicture.Presentation:may没有人称和数的变化，后面加动词原形。Example:我可能买一直玩具熊猫。__________________________Imay

buyatoypanda.Mypetdoghasbeenawayforthreedays.Itmayloseitsway.我的宠物狗离开三天了。它可能迷路了。Itmaybeaspider.Thepandasareindanger.Ifwedonothing,soonthere_______________________________maybenoneleft.

maynothaveaplacetoliveorfoodto

eatPresentation:Tips：may

用与否定句时，直接在后面加not,构成maynot…结构,意味“可能不”You

maynotlikehavingasnakeasapet.你可能不喜欢养蛇作为宠物。Thisnewsmayormaynotbetrue.这消息有可能是真的，有可能不是真的。

Practice:Millieisinthezoo.SheistellingSandyonthephoneaboutwhathappens.CompletewhatMilliesaysusingmaywiththewordsinbrackets.▪Theelephantisgoingtowardsthewater.It__________________________(need)abath.▪Thelittleboyiscryingbecausehesawthetigers.He________________________(be)afraidofthem.▪Icannotgonearlionsandtigers.They______________________(hurt)me.mayneedmayhurtmaybe走向…伤害某人Practice:Millieisinthezoo.SheistellingSandyonthephoneaboutwhathappens.CompletewhatMilliesaysusingmaywiththewordsinbrackets.▪Thebabypandaisnotdrinkingitsmum’smilk.It__________________________(notbe)hungry.▪Themonkeysarejumpingaround.They________________________(beplaying)witheachother.▪The

horseisstandingwithitseyesclosed.It__________________________(besleeping).maynotbemaybeplayingmaybesleeping伴随状语，表示一种状态其他表示推测的情态动词①must②can③could④*might表推测，一定。e.g.Hewinsthegame.Hemustworkveryhard.表示可能性语气由上到下依次减弱。即must>can>could>may>might.could,might并不一定是can,may的过去式，有时只是语气分别比can,may更弱。表可能，用于否定句和疑问句中，不能用于肯定句。can’t表示不可能。e.g.Itcan’tbeDavid.Isawhimintheclassroomjustnow.既可以表示过去的可能性，又可以表示现在的可能性。e.g.Shecould

swimwhenshewas3yearsold.表示可能,可能性比may小e.g.Idon’tknowwheremypetcatgoes.Itmightbeintheforest.Practice:1.Bythetimeshewaseight,Linda________readEnglishandFrench.A.couldB.mustC.needD.may2.You______beabletocontrolallthethingsthathappenedtoyou,butyoucandecidenottobereducedbythem.A.neednotB.maynotC.mustnotD.shouldnot4.——Thearticlesaysthatone'spersonalitydependsonhisanimalsign.——You_____readitforfun,butdon'tbelieveinthat.A.havetoB.needC.shouldD.can3.Ifwedon'tprotectnature,somewilflife_____dieoutinthefuture.A.needB.mayC.can'tD.shouldn'tABDBcould表示一种能力must表示一种可能性may表示一种可能性can表示一种允许may表示一种可能性5.——InChina,manystudentsfeelstressedbecauseoftoomuchhomework.——Don'tworry.Ourgovernmenthasrealizedthisproblem.I'msurethere_______begoodnewsforthemsoon.A.canB.mustC.shouldD.needBGroupwork——discussionWhatmayhappenifweusemoreandmoreplasticbags?LeadinA:Wheredoyouwanttovisitfirst?B:Iwanttovisit___________.A:Howdoyouplantogoto_______.B:Iplantogothere__________.A:Whatdoyoudecidetodowhenyougoto__________.B:Idecideto____________.Wheredoyouwanttovisitthewildanimals?Presentation:Usingverbs+to-infinitivesAt

four

years

old,shegooutsideforthefirsttime.

Whenshewassixmonthold,she

eatbamboo.

Whenshewas20monthsold,she

lookafterherself.

startedtobegantolearnttoWhenshewas20monthsold,shelearnttolookafterherself.

Presentation:Usingverbs+to-infinitivesVerbs+(not)todo动词＋动词不定式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”Example:At

four

years

old,shedecidedtogooutsideforthefirsttime.

Whenshewassixmonthold,shebegantoeatbamboo.

Presentation:Usingverbs+to-infinitivesVerbs+(not)todoThelittlemonkeyislearning________(climb)thetree.toclimbChildren,remembernottoclimbthetree!Presentation:Usingverbs+to-infinitivesVerbs+(not)todoTheMatherwants______(clean)herbaby’sfur.tocleanPresentation:Usingverbs+to-infinitivesVerbs+(not)todoThemonkeyplans______(pick)thefruit.topickRemember_______feed

themonkeys.Verbs+(not)todonottoRemember_______usetheFlashlight(闪光灯)whentakingphotos.Verbs+(not)todonottoPresentation:Usingverbs+to-infinitives常见接动词不定式做宾语的动词agree,promise(承诺)，fail,forget,refuse(拒绝)，hope,prepare,remember…Extension:Usingverbs+to-infinitivesremembertodo记得去做某事rememberdoing记得做过某事Example:Tom,remembertoplaybasketballwithusafterclass.（动作未发生）汤姆，记得课后和我们一起打篮球。Irememberwritingalettertoyoulastmonth.（动作已发生）我记得上个月写了一封信给你。

Extension:Usingverbs+to-infinitivesforgettodo忘记去做某事forgetdoing忘记做过某事Example:Iforgottoclosethewindow.

我忘记去关窗户了。（没关）

Iforgotclosingthewindow.

我忘了关过窗户了。（关了）

stoptodo停止（现在做的事）去做另一件事stopdoing停止现在正在做的事Practice:Usingverbs+to-infinitivesAmy’sdadisaskingAmysomequestionsaboutanimals.Completetheirconversationwiththewordsinbrackets.Dad:Doyouknowanythingspecialaboutwildanimals?Amy:Yes,Dad.Forexample,dolphinsareclever.Theycan______________(learn,workout)easymathsproblems.Dad:Whatdoyouknowaboutbats?Amy:Batscan’tsee,buttheycan_____________(decide,fly)therightwaywiththehelpoftheirmouthandears.learntoworkoutdecidetoflysomething/anything＋adj计算出在…的帮助下Practice:Usingverbs+