四、情态动词与虚拟语气一、情态动词一、个别情态动词的用法1.can和could1)表_____________=beableto.2)表示“征询对方意见”和“允许”,此时在疑问句中could语气较委婉,但回答时仍用can而不用could.能用一下你的电脑吗?_________________________________________________3)表“__________”,一般用于疑问句和否定句。4)肯定句中,表客观上、理论上的可能性。解释为“________________”5)cannothelp/choosebutdo_________________;cannot/never…enough/too___________________can’thelpdoing________________________;can’thelp(to)dosth_________________________eg:①ItisusuallywarminmyhometowninMarch,butit__________berathercoldsome.②Don'tplaywiththedog,Jack,forit___________bedangerousat.③--CouldIborrowyourbike?---Yes,you______________.④Thereisnolightintheroom.She_____________beathomeno⑤________thisbetrue?Hecan’tbeathome,_________________?2.may和might1)表示“征询对方意见”,可和can互用。might代替may用于疑问句,更客气礼貌些,回答时仍用may。2)表示“推测”。常用于_________句和______句。.3)may表“____________”。Mayyousucceed!4)may/mightaswell________________最好,不妨;maywell___________很可能做eg:①________Ismokehereintheroom?②—IsthereanexpresstoBei激ngtonight?—There____________be,butyou'dbettercallthebookingofficetomakesure.③---IsJohncomingbytrain?---Heshould,buthe______________.Helikesdrivinghiscar.④________yousucceed!---本文于网络,仅供参考,勿照抄,如有侵权请联系删除---3.must1)表示“必须,有必要,应该”。但没有词形变化,如用于过去时或将来时,则用haveto.注意,对于Must….?一类的疑问句,肯定,则用Yes,youmust;否定一般用No,youneedn’t/don’tneedto/don’thaveto.2)表示“推测”,只用于___________句。对过去的推测用_______________________,注意其反意问句。3)mustnot表示“________________”。4)(表示固执)偏要,一定要5)表示“不巧,偏偏”,指发生了与说话人的愿望相反或令人不愉快的事情。6)表示必然性(必定会,必然要)Allmenmustdie.eg:①Hemustbeplayingfootballontheplayground,_________he?②Hemusthavebeentoldthenews,________________he?③Ifyou________smoke,pleasegooutside.④Thecar________breakdownjustwhenwewereabouttostartoff.⑤Hisbookmusthavebeenpublishedlastmonth,________it?4.shall1)shall用在第_______人称疑问句,表征求意见,请求指示。2)shall用于主语为第二、三人称的陈述句中,表示说话人的命令、警告、允诺、威胁等;用于第三人称,指条文/约、合同、遗嘱等中的义务和规定。eg:①_______webeginourclass?②_______shegototheconcertwithusthisevening?③Don'tworry.You______gettheanswerthisveryafternoon.④Accordingtotheschoolrules,nostudent______gooutoftheschoolaftereleveno'clockatnightwithouttheteacher'spermission.5.will和would1)表示“意愿”“决心”2)在疑问句用于第_____人称,表示询问对方的意愿或向对方提出请求。would比will更委婉,客气。Wouldyouplease…?3)will可以表示倾向、习惯性动作(意为“总是会,老是”等意思)4)will表现在的习惯性动作,would表过去的习惯性动作,还可表示反复发生的动作或某种倾向。5)临时作出的决定。eg:①________youpleasepassmesomesalt?②Ifyou_______wait,Iwillgoandaskifthemanagercanhavethetimetomeetyou.③Thecar________start.---本文于网络,仅供参考,勿照抄,如有侵权请联系删除---④Inthosedays,wheneverIhaddifficulties,I________gotoMrShenforhelp.6.should和oughtto1)表示按照道理、道德“应该、应当、理应”=_____________2)表示建议、命令、主张、劝告(suggest,insist,order,command,advise,demandetc.)虚拟语气中。3)表按常规有一定依据的_________,解释为“按理来说,按理应该”4)表惊...