Unit5Grammar課件牛津譯林版英語八年級上冊2

Xiwang

100grams8kilograms35kilogramsweightfoodactionproblemsmother’smilkbambooHelppandashavemorebabiesBuildmorereservesMakelawsRetellthestoryWhatwillhappentogiantpandasifwedonothing?Ifwedonothing,theremaybenoneleft.HerearesomesentencesusingmayinUnit5.

may表示可能性（用于肯定句中或否定句中）maynotdo...意為“可能不......”PartOneUsingmayforpossibilityMaybeitissleeping.It____________________.Haveaguess!maybesleepingWhatisitdreamingabout?Itmaybedreaming.Itmayseeitsmaster.Itmayfindsomefood.Itmayplaywithitsfriend.Findtherulesofusing“may”may+v原，表示“可能”Maybeitdoesn'tlikethetaste.It__________________thetaste.Maybethefoodisnotyummy.Thefood______________yummy.maynotbemaynotlikeWhydoesn'titeatthefish?Maybeitdoesn'tfeelhappy.It__________________happy.Maybeitdoesn'thaveanyfriends.It______________anyfriends.maynotfeelmaynothaveItmaynotlikethefood.Thefoodmaynotbeyummy.Itmaynotfeelhappy.Itmaynothaveanyfriends.Findtherulesofusing“may”maynot+v原，表示“可能不”1.The

elephant

is

going

towards

the

water.

It

__________(need)

a

bath.2.The

little

boy

is

crying

because

he

saw

the

tigers.

He

__________(be)

afraid

of

them.

3.I

cannot

go

near

the

lions

and

tigers.

They

___________(hurt)

me.

4.The

baby

panda

is

not

drinking

its

mums

milk.

It

____________(not

be)

hungry.

5.The

monkeys

are

jumping

around.

They

_______________(be

playing)

with

each

other.

6.The

horse

is

standing

with

its

eyes

closed.

It

_________________(be

sleeping).

maybemayhurtmaynotbemaybeplayingmaybesleepingP61InthezoomayneedHemaynotknowthetruth.他可能不知道真相。Hecan’tknowthetruth.他不可能知道真相。Compare:注意：在否定句中常用can’t表示“不可能”他現(xiàn)在不可能在家，因為他房間里的燈是關(guān)著的。Hecan’tbeathomenow,becausethelightisoffinhisroom.may不是唯一的表示可能性的情態(tài)動詞，如圖所示：語氣弱中強(100%)肯定推測mightmaymust(一定)否定推測Tip：can不能表示肯定推測，mustn't不能表示否定推測，而表示“不準，禁止”,may不能用于提問。那會是真的嗎？Maythatbetrue?×Canthatbetrue?√mightnotmaynot(可能不)cannot(不可能)表示“許可或請求許可”，這種情況下，與can同義，可以互換使用。你可以休假兩天。我可以使用這把剪刀嗎？回答可以用Yes,youcan./

No,youcan’t.也常用Yes,please./Certainly./Ofcourse.否定回答可以用

Sorry,youcan’t./

No,youmustn’t./No,pleasedon’t.Youmay/canhavetwodaysoff.May/CanIusethispairofscissors?Usingmayforpermission（許可）(1)—Whoismakingmuchnoise?—It____beTimmy.Heissleepingnow.A.can’t B.maynot C.mustn’t D.couldn’t(2)—Cathy,Ijusthelpedyoucleanupyourroom.—Thanks.Butyou________doit.Icouldmanage(設(shè)法完成)itmyself.A.can’tB.mustn’tC.needn’tD.shouldn’t(3)—DoyouhaveanyplansforthisSunday?—I’mnotsure.I_______gotothecountrysidetoseemygrandmother.A.can B.must C.may D.need課堂練習(xí)ACC(4)—IsthewomanoverthereLily’smother?—Oh,that_____behermother.Shelookssoyoung!A.shouldB.mustC.can’tD.may(5)—Wow,anothergift!What'sinthebox?—I'mnotsure.It_________beasmartphone.A.mustB.wouldC.mayD.should(6)—Willitbesunnythisafternoon?—It_________fine.Whoknows?Theweather(天氣)alwayschangesquickly.A.mustbe B.willbe C.maybe D.canbeCCCPartTwoUsingverbs+“to”-infinitivesUsingverbs+“to”-infinitives1.Whatdopandasstarttodoat4monthsold?Theystarttogooutsideforthefirsttime.2.Whatdopandas

begintodowhentheyaresixmonthsold?Theybegintoeatbamboo.3.Whatdopandaslearntodoat20monthsold?Theylearntolookafterthemselves.zebra['zi?br?]Whentheyareindanger,theywilltry_________(run)asfastastheycan.Bearsdonotlikelivingtogether.Theyhope___________(live)alone.Let'sknowmoreaboutanimals!toruntolive動詞不定式在句中常作謂語動詞的賓語,這一類謂語動詞常見的有:agreebegindecidefailforgethopelearnplanprepareremembertrywant

想要做某事希望做某事計劃做某事同意做某事決定做某事學(xué)習(xí)做某事選擇做某事準備做某事

Translatesomephrases:wanttodosth.hopetodosth.plantodosth.agreetodosth.decidetodosth.learntodosth.choosetodosth.preparetodosth.動詞不定式:

verbs+‘to’-infinitivesdolphin['d?lf?n]bat[b?t]bee[bi?]squirrel['skw?r?l]learntoworkoutdecidetoflybegintosave（儲存）Learnmoreanimalsanddoexercises“to+動詞原形”的結(jié)構(gòu)，我們把這種結(jié)構(gòu)稱為動詞不定式。動詞不定式?jīng)]有人稱和數(shù)的變化，在句子中不能單獨作謂語，其否定形式是“notto+動詞原形”。Verbs+to-infinitives動詞不定式什么是動詞不定式learntoworkoutdecidetoflybegintosave（儲存）注意：動詞不定式的否定形式是“notto+動詞原形”。promisetodosth.承諾去做某事promisenottodosth.承諾不去做某事如:Youmustpromisenottobelateagain.你必須保證不再遲到了。動詞不定式是一種活躍的非謂語動詞。它在句中作主語、賓語、定語、狀語或賓語補足語。動詞不定式的形式是“to+動詞原形”，但to有時要省略。動詞不定式在具體運用時，用不用to，取決于謂語動詞的用法。動詞不定式Wedon’tuse‘to’aftertheseverbs.1.let

Theteacher

lets

him____（read）loudly.2.

make

Thejoke

makes

me_______

（laugh）.3.

see

Ioften

seehim_____（carry

）water.4.hearDoyouhearbirds_____（sing）everymorning?readlaughcarrysingremembertodosth.記得去做某事

rememberdoingsth.記得做過某事區(qū)分forgettodosth.忘記去做某事

forgetdoingsth.忘記做過某事stoptodosth.停下(正在做的)事去做(另一件)事stopdoingsth.停止做(正在做的)事區(qū)分課堂練習(xí)PartThree一、單項選擇。1.Mydadtaughtme_______(drive)andboughtacarasmybirthdaypresent.2.Ittookherthreehours_________(prepare)thedeliciousmeal.3.Allofuswant________(go)tothoseinterestingplaces.4.Heagreed_______(help)hisgrandmawiththehouseworkeveryday.5.Whydidhechoose________(take)abustothehill?todrivetopreparetogotohelptotake用所給詞的適當形式填空。6.Weshouldlearn_________(look)afterourselves.7.Wouldyoupleaselettheoldman______(sit)downonyourseat?8.Theyplan________(stay)athomeandwatchTVtomorrow.9.Gotobedafter_______(finish)________(watch)T