新概念第一冊主要語法及知識點總結(jié)情態(tài)動詞

（一）情態(tài)動詞的定義:（二）情態(tài)動詞不能單獨做謂語，它必須和其他動詞的一起構(gòu)成謂語（三）肯定句：主語+情態(tài)動詞+動詞否定句：主語+情態(tài)動詞+not+動詞疑問句：情態(tài)動詞+主語+動詞would“愿，要”；haveto“不得不”；need“需要”（四）cancould表示人或物本身所具有的能力，意為“能，能夠，會”:Twoeyescanseemorethan Icanswimvery表示可能（理論上或是邏輯判斷上Hecan’t(couldn’t)haveenoughmoneyforanewCanIhavealookatyournewHeaskedwhetherhecouldtakethebookoutofthereading-Hecan’t(couldn’t)beoversixty. could表示比canCan(Could)youlendmeahand?may也可指現(xiàn)在時間，語氣比mayMay(Might)Iaskforaphotoofyourbaby? 我可以要一張你寶寶的嗎？在回答以may引起的問句時，肯定回答是一般可仍用may,或Yes,please./Certainly./Sure./Ofcourse.否定回答根據(jù)說話人的語氣由強到弱分別選用:mustnot(mustn’t)（）/hadbetternot（最好別）/maynot（不行）may表可能,canmight可以指過去時Hemaybeat Theymightbehavingameeting,butI’mnotsure. must（haveto表示客觀需要Wemustdoeverythingstepby YoumustgethomebeforeHemustbeill.Helooksso must的疑問句，肯定回答用must，否定回答用needn’t或don’thavetoYoushouldbepolitetoyour Thefilmshouldbeverygoodasitisstarringfirst-classactors. 這部新是一流1）表意愿,用于各種人稱。Iwilldoanythingfor 我愿為你做任何事2)willWillyouclosethewindow?willTheywouldnotlethiminbecausehewaspoorlydressed. IsaidIwoulddoanythingfor 我我愿意為你做任何事wouldWouldyoulikeanotherglassof need作為情態(tài)動詞，主要用于否定句疑問句；作為實義動詞可用于肯定句，否 ephonehim 給他回答由need引起的問句時，肯定回答一般用must，否定回答是用--NeedIcome?--Yesyoumust.----(一) Itakeit "I'msorry,you A.Could B.Might...might C. D."Needwedothisjob "Yes, A.you B.you C.you D.you tohavelunchwithusA.Doyou B.Wouldyou C.Willyou D.Haveyou-IsJohncomingbytrain? --Heshould,buthe not.Helikesdrivinghiscar.A. B. C. D.Peter comewithustonight,butheisn'tverysureA. B. C. D.Ithoughtyou behungry,soIhavebroughtyousomeA. B. C. D.Comeon!We hurrybecausethereisn'tmuchtimeA. B. C. D.AmydidbestintheEnglishtest.She hardlastA.must B.shouldhave C.should D.must—Wouldyouliketodrinksome— ,butIhavedrunkalotifA.I’dlove B.Ithink C.I’mafraid D.Idon’tthink—MayIsmokehere?—No, !Look,thereisa“NOSMOKING”sign B.may —Listen!Helenissinginginthenextroom. beHelen.Shehasgoneto —Whatdodriversdowhenthetrafficlightsturnred?—They stopandwaittillthegreenlight. (二) now?“No, cleantheIt’stimeforclass.You stoplyingfootball,oryou belatefor R