Unit8 语法专项 情态动词人教版英语九年级全册

Unit8语法专项情态动词表推测的用法情态动词本身有一定的词义，但是不能独立作谓语，只能和动词原形一起构成谓语。情态动词用在行为动词前，表示说话人对这一动作或状态的看法或主观设想，如需要，可能，等等。它具有如下特点：★情态动词没有________________的变化，即它不随主语人称和单复数的变化而变化。如：Theycanswim.和Shecanswim.中的人称和数都发生了变化，但can没有变化。★情态动词有词义，但意思不完整，故不可单独作谓语，必须和后面的________________连用，一起构成谓语。★情态动词的否定句一般是在can后加__________构成，变一般疑问句通常将can___________。14．根据例句总结表示猜测情态动词的用法。（1）Hemustknowtheanswers.他一定知道答案。结论：must表示_________，意思是“_________”。只能用于_________句。（2）Hecan’tpickherschoolbagup.他不可能拿了她的书包。Canheknowtheanswer?他可能知道答案吗?结论：can’t表示_________推测，意为“_________”，用于否定句。can在疑问句中意思是“_________”。（3）Don’teatit.Itcouldgobad.不要吃它，它可能坏了。结论：could表示_________。（4）Hemay/mightnotbeathome,butI’mnotsure.他可能不在家，不过我也不确定。结论：may,might表示_________推测，意思是“__________”。might在这里不表示过去时态，只表示语气更委婉，可能性_________。一、单项选择1．—Look!Thisrestaurantisalwayscrowded.—Thefoodhere________beverydelicious.Let'sgoandhaveataste.A．need B．can't C．must2．—Whosetextbookisit?IsitJenny's?—No,it________beJenny's.Look,Helen'snameisonthecover.Ithinkit________beHelen's.A．can't;must B．mustn't;must C．can't;may D．mustn't;may3．—Where'sJane?—I'mnotsure.She______inthelibrary.A．mightbe B．mustbe C．can'tbe4．—Manypeopleplaywithmobilephonesalldayinsteadofreadingbooks.—That’stoobad.Everyone________beabooklover.Readingismoreenjoyable.A．may B．should C．would5．Readingalargenumberofbooksmakeuswiser.Themoreweread,themoreweknow.A．can B．would C．need6．Theboy______beastudentinourschool.Hewearsadifferentuniformfromus.A．might B．can't C．must7．Thegirlintheclassroom________beMaria.Shecalledmefromthelibraryjustnow.A．mustn’t B．maynot C．can’t8．—Haveyoudecidedwheretogoforthesocialpractice?—Notyet.We______gotoTaiyuanLibrary.A．must B．might C．can’t9．—MustIwaithereallmorning?Ihavealotofworktodo.—No,you.Youmaybebackintheafternoon.A．mustn't B．can't C．don'thaveto10．—Excuseme,mayIkeepthebookalittlelonger?—Sorry.You________returnittoday.A．must B．mustn’t C．can11．---IhopeTedwillbethewinner.---Butit______behim,becausehehasmadesomanymistakes.A．must B．might C．can’t12．You_____betiredafterworkingforeighthourswithoutarest.A．can B．may C．must三、根据句意填空15．—WhoseCDisthis?—Itmight________toJim.16．ThebookmustbelongtoTony.

（变为否定句）Thebook_________belongtoTony.17．Hemustbeatworkatthemoment.（改为否定句）He________________atworkatthemoment.18．ThisbookmustbelongtoCarla.（改否定句）Thisbook____________toCarla.19．Thewomanovertheremustbehismother.（改为否定句）Thewomanoverthere________________hismother.20．ThewomanoutsidethedoormustbeMrs.King.（改为否定句）Thewomanoutsidethedoor_____________Mrs.King.21．YouhadbettergotoParisforaholidaynextweek.(改为否定句)Youhadbetter________

________toParisforaholidaynextweek.22．ThecoatmustbeMike’s.（改为同义句）Thecoat________________________________.23．Maybeheisinthelibrary.He__________________inthelibrary.参考答案：1．C2．A3．A4．B5．A6．B7．C8．B9．C10．A11．C12．C13．

人称和数

动词原形

not

提到句首14．

可能性最大的肯定推测

一定

肯定

否定

不可能

可能

某事有可能发生或可能是事实

“可能性”

可能

更小15．belong16．cannot/