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ID:51155172
大小:463.47 KB
页数:15页
时间:2020-03-19
《情态动词表推测的用法.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Let'slearn!1.Mygrandmaisovereighty,butshecanreadwithoutglasses.2.Canyouwaitamomentplease?3.Excuseme,couleyouhelpmeplease?4.Accidentcanhappentoanydrunkendriver.5.Itcan’tbemyfather.HeisnowinEngland.表能力表请求,许可可能性Can&couldMay&might1.可能性Hemaybeverybusynow.Hemightbeverybusyn
2、ow.May表许可-------Hemaygonow.MayIgonow?祈使句-------Mayyousucceed!Mayyouhaveanicetrip!Will&wouldThatbaglooksheavy.I’llhelpyouwithit.Thanksforlendingmemoney.I’llpayyoubackonFriday.Thisoldmanisstrange.Hewillsitforhourswithoutsayinganything.WewouldsitaroundGrandpaaftersupper,
3、listeningtohisstories.Willyoucomethisway,please?Wouldyouopenthewindow?意志,愿望,决心习惯请求(用于第二人称)Shall&shouldShallweputoffthesportmeetinguntilnextweek?ShallTomgotherewithmetomorrow?Youshallifyoudon’tworkharder.Heshallhavethebookwheninfinishreadingit.请求征求意见警告允诺威胁等Must&can’t规定
4、、指令Youmusthaveapassportifyouwanttogoabord.主观的命令、禁止Youcangooutwithyourfriendbutyoumustcomebackbefore11atnight.Youmustbeill.Icanseeitfromyourface.Hecan’tbeathome.Isawhimintheclassroomjustnow.推测⑴Can&could①表能力(ability)②表请求&允许(request&permission)③可能性(possibility)Can用于肯定,理论
5、上“可能”Can’t用于否定句中,主观猜测⑵May&might①表示可能性,might不是may的过去式;②may表许可(permission)③May用于祈使句,表祝愿⑶Will&would①表意愿②Will&would表习惯③表请求⑷Shall和shouldShall的用法征求意见(第一/三人称)命令,警告等(第二/三人称)⑸Must&can’tmust“命令”,“推测”A,规定,指定B,主观的命令,禁止C,猜测,(语气肯定)Can’t用于否定句Should表劝告,建议,命令及合理推断情态动词表示推测1)might,mayMi
6、ght------“也许”May------“可能”Eg:Hemightberight.他也许是对的。Hemaynotcometonight.他今晚可能不来否定mightnot否定maynot表示主观的推测,一般用于肯定句2)canCan用于主观推测时,常用于否定句(can’t不可能)和疑问句,疑问句中也可以用couldCan用于肯定句时,表示一时的,客观的可能性。Eg:----Canhebeathomenow?他现在在家吗?---No,hecan’tbeathome,sinceImethiminthestreetjustnow.
7、不,他不可能在家,因为我刚才才大街上遇到他了。Couldshebechattingontheinternet?她现在可能在网上聊天吗?3)Should和oughtto表示根据常规、事理、经验做出的判断,“想必”“应该”。Eg:TodayisSunday.Ourteachershouldbeathome.Thatoughttobeenoughfoodforthefourofus.4)must表主观的推测“一定”,语气十分肯定。其否定式为can’t“不可能”,不用mustn’t,mustn’t表示禁止,不允许,语气十分强硬。Eg:He
8、mustbeintheclassroomnow.Youcan’thaveknownthetruth.Studentsmustn’tsmoke.★一些情态动词后接完成式是对过去情况的肯定或否定的推测或推断。musthavedonesthmayhave
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