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情態(tài)動(dòng)詞 （1） 表可能性情態(tài)動(dòng)詞：may、might. 英語(yǔ)中除了情態(tài)動(dòng)詞表可能性，還可以用adj或adv: probably， possible. may (可能): 暗含不確定的意思。 might:表可能，但它的含義比 may 更不確定。 He may be at home . He might come soon . It will probably be hot and sunny. （2） Must表示主觀義務(wù)和需要。Mustn’t表示禁止 Need也表示需要，但不一定是一種義務(wù)，語(yǔ)氣沒(méi)那么強(qiáng)烈。 （1）need用作實(shí)義動(dòng)詞need to do sth 需要做某事 肯定句：He needs to go shopping .他需要去購(gòu)物。 否定句：He doesnt need to go shopping . （實(shí)意動(dòng)詞否定都借助助動(dòng)詞do/does） 疑問(wèn)句：Does he need to go shopping? Yes, he does. No, he doesnt. （2）need用作情態(tài)動(dòng)詞need do sth 需要做某事 肯定句：He need go shopping .他需要去購(gòu)物。 否定句：He neednt go shopping （情態(tài)動(dòng)詞否定都直接在后面加not） 疑問(wèn)句：Need he go shopping? Yes, he must No he neednt （3）must“必須……，得……，要……”； 肯定：You must go to school on time.你必須按時(shí)到校 否定：You neednt go to school on time.你不必按時(shí)到校。 疑問(wèn)：Must I go to school on time? Yes, you must No, you neednt （4） have to 與must的區(qū)別 （5） must側(cè)重于說(shuō)話者的主觀看法，認(rèn)為有必要或有義務(wù) have to側(cè)重于客觀需要，含有“不得不，被迫”之意。 e.g. All passengers must wear seat belts. 所有乘客都要系安全帶。 My bike was broken yesterday, so I had to walk to school. 昨天我的自行車壞了，所以我只能走路去學(xué)校。 （3） 情態(tài)動(dòng)詞表示推測(cè)的用法: 表示肯定推測(cè)時(shí)，語(yǔ)氣由強(qiáng)到弱： Must be > Can be > Could be > May be > Might be 注意在推測(cè)的過(guò)程中，如果句子中已經(jīng)有動(dòng)詞的話，省略be。所有的否定推測(cè)均用can’t be 情態(tài)動(dòng)詞練習(xí)題 ( )1.John___cometoseeustonight,butheisntverysureyet. A.may B.can C.hasto D.must ( )2.They___dowellintheexam. A.canbeableto B.beableto C.canableto D.areableto ( )3.-MayItakethisbookout? -No,you___. A.cant B.maynot C.neednt D.arent ( )4.You___goandseeadoctoratoncebecauseyouregotafever. A.can B.must C.dare D.would ( )5.-CanyouspeakJapanese?-No,I____. A.mustnt B.cant C.neednt D.maynot ( )6.-He___beintheclassroom,Ithink. -No,he___beintheclassroom.Isawhimgohomea minuteago. A.can;maynot B.must;maynot C.may;cant D.may;mustnt ( )7.Eventhetopstudentsinourclasscantworkoutthisproblem,soit___beverydifficult. A.may B.must C.can D.need ( )8.Heisntatschool.Ithinkhe___beill. A.can B.will C.must D.hasto ( )9.___Itakethisone? A.May B.Will C.Are D.Do ( )10.Thechildren___playfootballontheroad. A.cant B.can C.mustnt D.must ( )11.You___belateforschoolagainnexttime. A.mustnt B.neednt C.donthaveto D.dontneedto ( )12.-MustIdomyhomeworkatonce? -No,you___. A.neednt B.mustnt C.cant D.maynot ( )13.Hisarmisallright.He___goandseethedoctor. A.hasnotto B.donthaveto C.haventto D.doesnthaveto ( )14.Hehadtogiveuptheplan,___he? A.did B.didnt C.does D.doesnt ( )15.—MustIreturnthehooktomorrowmorning? —No,you_____.Youcankeepitlonger. A.mustnt B.cant C.neednt D.couldnt ( )16.—HowlongmayIkeepthebook? —You________keepitfortwoweeks. A.may B.must C.will ( )17.—Susan,wouldyouliketogohikingwithusthisafternoon? —Idloveto,butI studyforatest. A.may B.haveto C.can ( )18.--MayIgooutnow,Dad? --No.You__letyourmotherknowfirst. A.can B.may C.need D.must ( )19.-CanIskateonthelakenow? -No,you______.It’sdangerous. A.can’t B.mustn’t C.needn’t D.won’t ( )20. --Peterdoesn’tmindlendingyouhiscamera. —He__________.I’vealreadyborrowedone. A.needn’t B.can’t C.mustn’t D.shouldn’t ( )21.—Goodmorning.IvegotanappointmentwithMsKinginheroffice. —Morning.You_______beMr.Jones.Thisway,please. A.will B.must C.can D,might ( )22.----Dad,thebreadisnotenough.Iamstillhungry. ____Ihavesomethingmore? ----Butthere’snothinginthefridgenow. A.Must B.Need C.Will D.Can ( )23.—Wheresmymusicdisc?Icantseeit! —Youdbetter_____thedisccarefullyinyourbedroom. A.lookup B.lookthrough C.lookfor ( )24.---Dowehavetogotoschoolthisafternoon? ---Yes,you________. A.must B.can C.need ( )25.—Congratulations!YouvegotthefirstprizeintheEnglishContest.—_____itbetrue?Itsunbelievable! A.May B.Should C.Must D.Can ( )26.---Maywegohomenow? ---No,you____.You____togohomeuntil5o’clock. A.mustn’t;areallowed B.don’thaveto;aresupposed C.needn’t;aren’tallowed D.can’t;arentsupposed M10 1.在美國(guó)的的天氣怎么樣？ What’s the weather _________ in America? 2.多雨的天氣 _________（rain） weather 3.刮風(fēng)的天氣 _________ (wind)weather 4.你在開(kāi)玩笑么？ Are you _________(joke)? 5.零下2度 minus 2 _________ 6.在公園里滑冰 go _________(skate) in the park 7.拍些秋樹(shù)的照片 take photos_________the autumn trees 8.一把雨傘 _________ umbrella 9.最好夏天去 _________better_________(go) in summer 10.泳衣 ___________ clothes 11.一件溫暖的毛衣 bring a warm sweater _________ you 12.與...相比較 _______________ 13.不時(shí) from ______ to ______ 14.與....相似 be _________ to 15.在暑假期間 _________ the summer holiday 16.在周末 ________ weekend 17.天將要刮風(fēng)了。 It will _________ windy. 18.為...支付 pay _________ sth M10 1.It’s often ___________(snow) in January in the north of China. 2.The best time _________(visit) the city is in spring. 3.Don’t forget _________(say) hello to your teacher. 4.It was ___________(probable) the most popular of her songs. 5.__________ bad weather ! It’s raining. 6.It often _________(rain) here in summer.