Unit3LanguageinuseModule11WayoflifeLanguagepracticeYoumustsayMrorMrswhenyoumeetsomeoneforthefirsttime.Youcantakeitaway.Youmustn’tbreakanything.Youneedn’t

wait!情態(tài)動詞情態(tài)動詞是輔助動詞,表示說話人的某種情緒、態(tài)度或語氣,本身有一定的詞義,不能在句中獨立作謂語,必須與另一個動詞一起構(gòu)成謂語,沒有人稱和數(shù)的變化。

情態(tài)動詞的特點1.不能單獨作謂語，必須與動詞原形連用2.沒有人稱和數(shù)的變化Black

Widow

can

use

guns

very

well.ShemustbethemostbeautifulwomanintheAvengers.Butshecan’tfightwithherfriendsuntiltheend.3.否定式構(gòu)成是在情態(tài)動詞后面加"not"GrammarFocus

情態(tài)動詞

must,can,need等情態(tài)動詞精講一.can的用法1.表示能力Eg:Shecanswim,butIcan’t.2.表示請求、允許，與may意思相近。eg:CanIuseyourpen?3.表示推測，意為“可能”，常用在否定句和疑問句中，

表推測時，can’t意為“不可能”eg：Thenewscan’tbetrue.could是can的過去式。情態(tài)動詞精講二.must的用法1.表示命令“必須”:Youmustcomeearlytomorrow．2.表示推測“肯定，一定”:Theymustbeathome.Thelightison.3.其否定形式mustnot(mustn’t)表示“不能，不允許，禁止”:Everyonemustobeytheschoolrules.Youmustn’tbreakthem.注：以must開頭的一般疑問句，肯定回答用must,否定回答用needn’t或don’thaveto(表“不必要，不必須”).--MustIcleantheroomnow?Yes,youmust.No,youneedn’t./No,youdon’thaveto.1.--MustIcomebeforeeighto'clock?--No,you_______.”A.can'tB.don'tC.mustn'tD.needn't2.--MustIfinishalltheworkbeforeIleave?--Yes,you_______.”A.mustB.canC.mustn'tD.needn't3.You___bequietwhenyouareinalibrary.A.mayB.canC.willD.mustDAD側(cè)重點不同時態(tài)形式不同否定式的結(jié)構(gòu)和意義不同musthavetomust只有一個形態(tài)；haveto有多種時態(tài)。mustn't

禁止；不允許haveto的否定為don'thaveto

不必=needn't.側(cè)重于主觀看法，認(rèn)為有必要或有意義去做某事；側(cè)重于客觀需要，含有“不得不、被迫”之意。Youdon'thavetotellhimaboutit.Youmustn'ttellhimaboutit.你不一定要把此事告訴他。你不得把這件事告訴他。區(qū)分must&haveto三.need的用法1.用作情態(tài)動詞，表示“需要”，用于疑問句和否定句中。Youneedn’tfinishyourhomeworktoday.2.以need開頭的一般疑問句，肯定回答用must,否定回答用needn’t.NeedIhelpyouwiththehousework,Mum?3.need用作實義動詞，常用于肯定句。常用結(jié)構(gòu)needtodosth，否定結(jié)構(gòu)需借助于助動詞don’t/doesn’t/didn’t.Yes,youmust.No,youneedn’t.其否定形式neednot(needn’t)表示“不需要，不必要”:Youneedtohaveabreak.Youdon’tneedtostayhereallthetime.四.should的用法1.should作情態(tài)動詞,表示勸告或建議,意為“應(yīng)該”。Youshouldgoforhelp.其否定形式shouldnot(shouldn’t)表示“不應(yīng)該”:Exercise1.-—IsthatgirlunderthetreeMary?—No,that_______beMary.SheisinNewYork.A.canB.mustn’tC.can’t2.—Look!Mr.Smithisrunningontheplayground.Helikesrunninginthemorning.—No,it_________behim.HehasgonetoShanghaionbusiness.A．can B．can’t C．might D．mustn’t3.Billhasbeendrivingallday.He________betired.A．need B．must C．shall D．canCBBExercise4.---Mum,canIgotothemoviestoday?---No,andyou____finishyourschoolworkfirst.A.canB.can’tC.mustD.needn’t5.---IsLucyknockingatthedoor?---No.It____beLucy.SheisinJapan.A.needn’tB.mustC.can’t6.---Haveyouseenmyglasses?I___findthem.---Sorry,Ihaven’tseenthem.A.can’tB.shouldn’tC.won’tD.mustn’t

CCAExercise7.You_______stopwhenthetrafficlightturnsred.A.canB.hadbetterC.needD.must8.—Shallwetakeataxi?—No,we_______.It’snotfarfromhere.A.can’tB.mustn’tC.shouldn’tD.needn’t9.---Dad,mustIfinishmyhomeworktoday？---No,you____.Youmayfinishittomorrow.A.needn’tB.mustn’t C.don’t D.won’tDDACompletetheconversationswithcanorcan’t.1A:CanyoudriveacarattheageofseventeeninEngland?

B:Yes,we

.HowaboutinChina?

A:No,we

.2A:CanyouopenagiftimmediatelyafteryoureceiveitinEngland?

B:

.WhataboutinChina?A:No,weusuallydon’t.3A:CanyoupushyourwayontoabusinEngland?

B:

.HowaboutinChina?

A:No,we

either.4A:Canyoudriveontheright-handsideoftheroadinEngland?

B:

.WhataboutinChina?

A:Yes,wemust.cancan’tYes,wecan01No,wecan’tcan’tNo,wecan’tCompletethesentenceswithmustormustnot.

Schoolrules1You

belateforschool.2You

eatinthelibrary.3You

rideyourbikein

theplayground.4You

doyourhomework.5You

listentotheteacher.mustnotmustnotmustnotmustmust02Underlinethecorrectwords.Itisimportanttoknowwhatyoumustandmustnotdowhenyoumeetpeoplefromadifferentcountry.You(1)

may/mustnot

askWesterners“Howoldareyou?”becauseitisnotpolite.You(2)

might/canknowsomeonewell,butyou(3)

must/need

not

ask“Howmuchmoneydoyoumake?”He(4)

may/canneverspeaktoyouagain!03Inpublicplaces,you(5)must/canaskpeoplebeforeyoutakephotosofthem,andyou(6)

mustnot/might

noteatordrinkinshopsormuseums.Insomecountriesyou(7)

cannot/cangointosomeone’shousewithyourshoeson.You(8)

neednot/mustnottakethemoff.Butinsomeothercountriesyou(9)

might/mustnotwearshoesinthehouse.Listentoateenagertalkingabouthislife.Check(√)thethingshemustormustn’tdo.04

must

mustn’t1cleanupbedroomonceaweek2washupafterdinner3stayoutafter9pm4dohomeworkbeforegoingout5washhandsbeforedinner6playmusicloudlyafter10pm√√√√√√Listenagain.Whattwothingsdoeshesayhecando?1___________________________________2________________________________________

Hecangooutwithhisfriendsatweekends.Hecanplaymusicloudlybeforeteno’clockatnight.05Well,myparentsarequitestrict.ImustcleanupmybedroomonceaweekandImustalwayswashupafterdinner.Myparentsareverystrictaboutthat.Imustn’tstayoutafternineo’clockatnight,butIcangooutwithmyfriendsatweekends.ImustdomyhomeworkbeforeIgooutandImustwashmyhandsbeforedinner.Icanplaymusic,butImustn’tplayitloudlyafterteno’clockatnight.TapescriptCompletethesentenceswiththewordsorexpressionsinthebox.baseballcapchesssetchopsticksdictionarypresents1Useyour

tolookupanywords

youdonot

understand.2MostChinesepeopleeatnoodleswith_____________.dictionarychopsticks3Jennycouldnotwaittoopenherbirthday__________.

4Hethinksitiscooltowearhis_____________back-to-front.5Whereismy____________?Let’splayagame.presentsbaseballcapchessset07Playagame.Chooseawordoranexpressionfromtheboxanddescribeittotheclass.Theclassguesseswhatitis.baseballcapbikeches