高中情態(tài)動詞難點解析

情態(tài)動詞難點講解modalverbs1策劃：《學生雙語報》

情態(tài)動詞表示推測不表示推測cancouldmaymightshallshouldmustwillwouldoughttohavetodare(daren’t)need(needn’t)usedto2策劃：《學生雙語報》情態(tài)動詞有一定的意義，但沒有人稱和數(shù)的變化，不能獨立使用，它和后面的動詞構成謂語．只作情態(tài)動詞的can/could,may/might, oughtto，must可情態(tài)可實義的need,dare/dared可情態(tài)可助動詞的shall/should,will/would相當于情態(tài)動詞的haveto,usedto3策劃：《學生雙語報》1.can與beableto均可表示某人做某事的能力，?？苫Q。例如：I'm

not

ableto[can't]

explain

this.Hewasableto[could]speakFrenchverywell.1.can,could和beableto的用法4策劃：《學生雙語報》e.g.We’llbeabletofinishtheworksoon.Ihaven’tbeenabletoseethefilm.2.can只用于現(xiàn)在時和過去時(could)。 be

able

to可以用于各種時態(tài)。

could用于表示泛指過去的能力。

e.g.I

could

read

when

I

was

four.5策劃：《學生雙語報》.3.表示特定的某一過去能力或表示成功地做了某事時，只能用was/were

able

to，相當于managedtodosth或succeededindoingsth

不能用could。

e.g.He

was

able

to

escapefrom

Europe

before

the

war

broke

out.

6策劃：《學生雙語報》構成下列特殊句式：①cannot/cannever...too...或cannot...enough

“無論怎么……也不過分；越……越好；非?！?。Onecannotbetoocareful.越認真越好。Icannotthankyouenough.我對你感激不盡。②cannothelpdoing.../

Wecouldn'thelplaughingwhenweheardthefunnystory.

7策劃：《學生雙語報》Ican’tbelievesuchagentlemanshouldbesorudetotheold

I’msurprisedthatheshouldeatsolittleeveryday.2.should可表示“居然，竟然”。8策劃：《學生雙語報》Naturally,afterItoldherwhattodo,mydaughtermustgoanddotheopposite.Don’tinterruptme，John.________youforcemetotellyouthetruthatthemoment?A.MightB.MustC.ShouldD.WouldB3.must表示“偏偏”9策劃：《學生雙語報》

1.shall用于第二、三人稱陳述句中，表示說話人給對方的命令，警告，允諾或威脅。e.g.1)Youshallgowithme.(命令)2)YoushallhavethebookwhenIfinishit.(允諾)3)Heshallbepunished.(威脅)4)Heshallbesorryoneday.Itellyou.(警告)

4.shall10策劃：《學生雙語報》2).用于條約，規(guī)定，規(guī)章等文件中，表示一種義務，多用于第三人稱中。.—Whatdoesthesignoverthereread?—“Noperson________smokeorcarryalightedcigarette，cigarorpipeinthisarea.”A.willB.mayC.shallD.mustC11策劃：《學生雙語報》would表過去對過去一種回想的心情。

usedto表過去常常（現(xiàn)在與過去不一樣）“過去常?！眅.g.Heusedtobeaquietboy.Wewouldstayupallnighttalkingaboutourfuture.5.would/usedto12策劃：《學生雙語報》NeedIdo…?Yes,youmust.No,youneedn’t/don’thaveto.dare&need情態(tài)動詞實義動詞dare否，疑，條darenotdo否,疑don’tdaretododon’tdaredo不用于肯定句肯：daretodoneed否，疑needn’tdo(don’t)needtodo13策劃：《學生雙語報》判斷dare/need是實義動詞還是情態(tài)動詞

1)

Shedarestoanswerthesequestions.2)

Weshoulddaretothink,speakanddo.實義動詞3)Hedarednotgothereatnight.

4)Youneednotpay—itisfree.

情態(tài)動詞14策劃：《學生雙語報》練習1.

Youmustpaythemoney,butyou____dosoatonce.A.mustn’t

B.darenot

C.needn’t

D.don’tneed.2.

She____killthesnake.Sheisafraidofit.A.don’tdare

B.daresnotto

C.darenot

D.daretoCc15策劃：《學生雙語報》表示推測——情態(tài)動詞的重要用法.肯定的推測可能的推測否定的推測疑問的推測must

對現(xiàn)在

對現(xiàn)在正在進行

對過去情態(tài)動詞may,mightcan’t,couldn’tcan,could+V.

+be+doing+havedone

+V.+havedone+bedoing可以用not表示“可能不”

+V.+havedone+bedoing+V.+havedone+bedoing16策劃：《學生雙語報》

1.Idon'tknowwheresheis,she_______(be)inWuhan.2.Atthismoment,ourteacher________________(mark)ourexampapers.

3.Theyhaveboughtanewcar.They_____________(have)alotofmoney.4.Theroadiswet.It________________(rain)lastnight.

maybemustbemarkingmusthaverainedmusthave

17策劃：《學生雙語報》5.Philip________________________hurtseriouslyinthecaraccident.6.---Lindahasgonetowork,butherbicycleisstillhere.---She_____________________(go)bybus.7.Mike________________(find)hiscar,forhecametoworkbybusthismorning.8.Yourmother______________________(look)foryou.may(might)havebeenhurtmay(might)havegonecan’thavefoundmusthavebeenlooking18策劃：《學生雙語報》9.It________(be)Mary.Shehasfallenill.can’tbe10.Isawhimjustnow,sohe___________________(go)abroad.couldn’thavegone19策劃：《學生雙語報》情態(tài)動詞考題:1.---Didthetrainarriveintime?----No.It_______twohoursago.A.musthavearrivedB.oughttohavearrivedC.mustarriveD.oughttoarrive2."MustIdrivetohishouseandpickupthechildren?"

"No,

."

A.youshouldn't

B.youmightnot

C.youneedn't

D.youmustn'tBC20策劃：《學生雙語報》3.Wedidn'tseeTomatthemeetingyesterday.He

it.

A.mustn'thaveattended

B.cannothaveattended

C.needn'thaveattended

D.wouldhavenotattendedB21策劃：《學生雙語報》4.You________suchalongcomposition.Theteacheronlyaskedfor300words.Youhavewritten600.A.mustn’thavewrittenB.couldn’thavewrittenC.needn’thavewrittenD.donothavetowriteC22策劃：《學生雙語報》5.Thereissomeoneknockingatthedoor.

itbeTom?