高中英語必修三unit2-課件

SomethingthatyousayisnottrueNottobepunishedforsomethingUncookedThestrongwishtoknowaboutsomethingSomeonewhobuysthingsorservicesfromashop,company,etcAparticularqualitythatgivessomeoneorsomethinganadvantageliegetawayitrawcuriositycustomerbenefitAnswerkeyforexercise1onpage12DiscoveringusefulwordsandexpressionsJuliewantedtobecomethinner.Sheknewshe________eatmorevegetablesandfruitbutlittlemeat.However,asshewassoafraidofbeinglaughedatbyherfriends,shedidnotconsultadoctorbutlivedona_____ofrice,_____vegetables,bananasandlemons.Threeweekslater,shefoundsheweighedasmuchasever.balanceddietrawslimoughttoenergeticloseweightloseheartloseinterestlosefaceoughttodietrawAnswerkeyforexercise2onpage12Shefeltsosadandhopelessaboutherselfandherbehaviourchanged.Shedidn’tdaretofaceherboyfriendandshewasunwillingtovisitherfriendsanymore.Luckily,herbestfriendFredcametoseeherandencouragedhertoexercise,eata_________dietandenjoylifeagain.SoonJuliebecameamazingly_________and_____!Shefeltveryhappy.balancedenergeticslimbecomethinnerloseweightBeinglaughedatbyherfriends

losingfacefeltsosadandhopelessaboutyourself

lostheartWasunwillingtovisitanymore

lostinterestinvisiting1√pear;×cream(fatandalltheothersarefruit)2√sugar;×mutton(meatandalltheothersareenergy–givingfood)3√bacon;×cabbage(vegetableandalltheothersaremeat)

4√strawberry;×eggplant(vegetableandalltheothersarefruit)Answerkeyforexercise3onpage12ModalVerbIIUnit2Ithinkshe_______apologisetothepublic.You________goandseethedoctor.

我認(rèn)為她應(yīng)該向公眾道歉。你應(yīng)當(dāng)去找醫(yī)生看看病。oughttooughttoFillintheblanksaccordingtotheChinese.Titanic______beagoodmovie.Weknowifwekeepatitwe_______succeed.

泰坦尼克號(hào)應(yīng)該是部好電影。我們知道如果我們堅(jiān)持下去就應(yīng)該會(huì)成功。shouldshouldWe______putonwarmclothesinwinter.

冬天的時(shí)候，我們不得不穿上溫暖的衣服。你必須把面粉和黃油和在一起。You_______mixtheflourandthebutter.

havetohavetoInEnglandtraffic_____keeptotheleft.

在英國(guó)，車輛必須靠左行駛。Allpassengers______wearseatbelts.所有乘客都必須系安全帶。mustmust上面的空你都填對(duì)了嗎？如此多的情態(tài)動(dòng)詞，我們應(yīng)當(dāng)如何使用呢？接下來就進(jìn)行詳細(xì)的講解。should和oughtto都為“應(yīng)該”的意思，可用于各種人稱。oughtto的語氣稍重一些。Yououghtto(should)followyourteacher’sadvice.oughtto／should

表示主語的義務(wù)或責(zé)任：

Youshouldtakecareofyoursister.

你應(yīng)當(dāng)去照顧你妹妹。

或指出一個(gè)正確、明智的動(dòng)作：

Theyshouldn'tallowparkinghere；thestreetistoonarrow．這兒不該允許停車；馬路太窄了。should和oughtto后面跟動(dòng)詞不定式的完成式,其肯定句表示”過去應(yīng)該做而未做”,其否定句則表示”過去不該做但做了”。Youshould/oughttohavemadethedecisionaweekago.Ishouldn'thavemadesuchafoolishmistake.注意

must的用法

1.表示主觀的義務(wù)和必要,

主要用于肯定句和疑問句,

意思為

“必須……，得……，要……”；由must引起的疑問句，肯定回答要用must或have

to,

否定回答要用needn’t或don’t

have

to,

意思是“不必”；

must的否定形式mustn’t表示must/haveto禁止，意思是“不能,不許”。如：

—Must

I

finish

the

task

right

now?

我現(xiàn)在必須完成這個(gè)工作嗎？—Yes,you

must.

/

Yes,

you

have

to.

是的。

(—No,youneedn’t./No,youdon’thaveto.不,不必。)

have

to

的用法

1.must表示一種主觀的需要，而have

to

表示一種客觀的需要，意思是“不得不”。

如：

Ihavetoattendanimportantmeetingthisafternoon.

今天下午我不得不參加一個(gè)重要的會(huì)議。

Motherisout,soIhavetolookaftertheshop.

媽媽不在家，因此我不得不照看商店。

2.have

to

的否定形式是don’thaveto,

相當(dāng)于needn’t。如：

Theydon’thavetobuyacomputeratpresent.

他們目前沒有必要買電腦。

情態(tài)動(dòng)詞(+動(dòng)詞原形)行為動(dòng)詞

.needdare

1.無人稱和數(shù)的變化;2.尤其用于：*否定句及疑問句中;*在if/whether之后;*或與hardly,never,noone,nobody連用;

3.常以needn’t

和daren’t

的形式出現(xiàn);4.dare有其過去時(shí)dared.多用于肯定句;(sb.)needtododaretodoneedtobedoneneeddoing

need/dare注意對(duì)need問句的回答:--NeedIfinishtheworktoday?--Yes,________________.No,________________.No,________________.youmustyouneedn’tyoudon’thavetoneedn’t對(duì)其它情態(tài)動(dòng)詞的回答:--ShallItellJohnaboutit?--No,you_____________________.--Mustwedoitnow?--No,you_____________________.needn’t(don’thaveto)needn’t(don’thaveto)dare可用實(shí)意動(dòng)詞和情態(tài)動(dòng)詞，用作情態(tài)動(dòng)詞時(shí)，意思是“敢”，其后接動(dòng)詞原形，通常只用于否定句或疑問句以及if或whether之后，一般不用于肯定句。如：Dareyoutellherthetruth？你敢告訴她事實(shí)真相嗎？Idon’tknowwhetherhedaretry.我不知他是否敢試一試。Idaren’taskherforarise.我不敢要求她加薪。dare用作實(shí)意動(dòng)詞時(shí)意為“敢于”，可以有各種詞形變化，可用于各類句型（肯定句、否定句、疑問句及各類從句等），其后多接帶to的不定式，有時(shí)to也可省去（尤其是在否定句或疑問句），可用于非謂語形式，完成時(shí)態(tài)等。如：Wemustdaretothink,speakandact.我們必須敢想、敢說、敢做。Iwonderhowhedares(to)saysuchthings.我納悶他怎么竟敢說出這樣的話來。情態(tài)動(dòng)詞dare可以有過去式dared，但也可以直接用dare表示過去式，或后接動(dòng)詞完成式。如：Thatwaswhyhedareddoso.那就是他為什么敢這樣做的原因。Motherdare(d)nottellfathershe‘dgivenawayhisoldjacket.母親不敢告訴父親她把他的舊上衣送人了。dare的過去式問題dare后通常不接動(dòng)詞的進(jìn)行式。Nobodyneedtobeafraidofcatchingthedisease.Nobodyneedbeafraidofcatchingthedisease.Thesedishesneedbecleanedcarefully.Thesedishesneedtobecleanedcarefully.Thesedishesneedcleaningcarefully.判斷正誤:

Howdareyousaysuchathing?Howdareyoutosaysuchathing?Hedaren’ttospeakEnglishbeforesuchacrowd,didhe?Hedaren’tspeakEnglishbeforesuchacrowd,darehe?表示推測(cè)——情態(tài)動(dòng)詞的重要用法情態(tài)動(dòng)詞對(duì)將來對(duì)現(xiàn)在對(duì)過去肯定的推測(cè)可能的推測(cè)+V.常見mustbe+V./+bedoing+havedone+V.mustmay/might+V./+bedoing+have+done可以用not表示“可能不”情態(tài)動(dòng)詞對(duì)將來對(duì)現(xiàn)在對(duì)過去否定的推測(cè)疑問的推測(cè)can’t/couldn’tcan/could

+V./+bedoing+V.+havedone+V.+V./+bedoing+havedone在不表示推測(cè)的情態(tài)動(dòng)詞中,我們要注意以下方面的問題:1.表示能力、許可的情態(tài)動(dòng)詞的用法。2.表示否定的情態(tài)動(dòng)詞的用法。3.shall和will的多種意義的區(qū)別。4.情態(tài)動(dòng)詞短語的使用。5.虛擬語氣中情態(tài)動(dòng)詞的使用。表示能力:

can,could,beabletobeableto

能用于各種時(shí)態(tài)。can/could

只能表示現(xiàn)在或過去的能力。was/wereableto

設(shè)法做成某事相當(dāng)于

managedtodosth.succeededindoingsth.1.表示能力、許可的情態(tài)動(dòng)詞的用法。表示許可:

may/might,can/could

might,could

比較委婉,一般多用于疑問句。can,may

表達(dá)的語言比較隨便。在以could,might

表示征詢對(duì)方意見或表示請(qǐng)求時(shí)，回答應(yīng)相應(yīng)使用can,may。2.表示否定的情態(tài)動(dòng)詞的用法:mustn’t不準(zhǔn);禁止needn’t沒必要(=don’thaveto)can’t不能;不可能maynot不可以;可能不shouldn’t不應(yīng)該(=oughtnotto)部分情態(tài)動(dòng)詞的否定式是情態(tài)動(dòng)詞中的考點(diǎn)之一。不同的“肯定”程度可按下列層次排列：

Heisathome.(事實(shí))Hemustbeathome.（非?？隙ǖ耐茢啵?/p>

Hecouldbeathome.（很可能）

Heoughttobeathome.（很可能）

Hemaybeathome.（僅僅可能而已）

Hemightbeathome.（或許,非常不確定）Hecouldn’tbeathome.（很可能不在家）

Hecan’tbeathome.（一定不在家）Heisn'tathome.（事實(shí)）

3.情態(tài)動(dòng)詞shall,will的多種意義:shall/will+動(dòng)詞原形:

shall可表示必須、命令、警告或征詢意見。will可表示意愿、常出現(xiàn)的動(dòng)作、在疑問句中表示請(qǐng)求和建議。均可表示將來。過去時(shí)為

should,would。4.情態(tài)動(dòng)詞短語的使用:wouldliketodo…wouldratherdo…wouldrather+從句wouldprefertodo...hadbetterdo...5.用于虛擬語氣的情態(tài)動(dòng)詞:shouldmightcouldwouldneedn’toughttoPractice1:高考考題專練1.Ithoughtyou_____likesomethingtoread,soIhavebroughtyousomebooks.A.mayB.mightC.wouldD.must2.Whereismypen?I____it.A.mightloseB.wouldhavelostC.shouldhavelostD.musthavelost3.Ididn’thearthephone.I___asleepA.mustbeB.musthavebeenC.shouldbeD.shouldhavebeenBD

B4.Therewerealreadyfivepeopleinthecar,buttheymanagedtotakemeaswell.It____acomfortablejourneyA.can’tbeB.shouldn’tbeC.mustn’thavebeenD.couldn’thavebeen5.It’snearlyseveno’clock.Jack___behereatanymoment.A.mustB.needC.shouldD.could

DC6.Didthetrainarriveintime?No.It_______twohoursago.A.musthavearrivedB.oughttohavearrivedC.mustarriveD.oughttoarrive7."MustIdrivetohishouseandpickupthechildren?"

"No,

."

A.youshouldn't

B.youmightnot

C.youneedn't

D.youmustn'tBC8.Wedidn'tseeTomatthemeetingyesterday.He

it.

A.mustn'thaveattended

B.cannothaveattended

C.needn'thaveattended

D.wouldhavenotattendedB9.Thereissomeoneknockingatthedoor.

itbeTom?

A.can

B.must

C.should

D.oughttoA10.Twoyearsago,myhusbandboughtmeabicycle.Ifyouliveintown,itisoftenfasterthanacarandyou

worryaboutparking.

A.mustnot

B.maynot

C.shouldnot

D.don'thavetoD

11.You_____suchalongcomposition.Theteacheronlyaskedfor300words.Youhavewritten600.A.mustn’thavewrittenB.couldn’thavewrittenC.needn’thavewrittenD.donothavetowriteC1.我不得不接受你的建議。2.未經(jīng)允許，你不能來這兒。

3.你應(yīng)當(dāng)去照顧你妹妹。4.他們想必已到那兒了。

Youmustn’tcomeherewithoutpermission.Youshouldtakecareofyoursister.Theyoughttobetherebynow.翻譯

Ihavetoacceptyoursuggestion.Answerkeyforexercise1onpage13Thenusuallybylunchtimetheywouldallbesold.

(possibility)Whatcouldhavehappened?(possibility)Nothingcouldbebetter…”(possibility)somethingterriblemusthavehappenedif….(Guessing)Hecouldnotbelievehiseyes.

(Abilitys)Discoveringusefulstructures

Perhapsheshouldgotothelibraryandfindout.(Duty)HecouldnothaveYongHuigettingawaywithtellingpeoplelies!(Intention)Hehadbetterdosomeresearch!(Duty)EventhoughhercustomersmightgetthinaftereatingYongHui’sfo