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1、Unit8情态动词表推测一、用must,can/could，may/might,need,should等表推测，中考常见考点有：1.Must可能性最大100%，只能用于肯定句的推测，2.Can/could可能性次之，一般用于否定句或者疑问句中的猜测，意为“不可能”或者“可能吗”,can’t可能性0%.3.May/might可能性较小，一般用于否定句或肯定句的猜测“可能”二、情态动词表推测常用句型1.对现在事实的推测情态动词+dosth如Hemustbeathomenow.2.对过去的事情推测情态
2、动词+havedone如Hemayhavefinishedhishomework.3.对正在进行的事情推测情态动词+bedoing如Thebabymustbecrying.4.therebe句型的推测theremustbe……如Theremustbeariveroverthere.三.Must提问的回答A:MustIdo…….?B:Yes，youmust.No，youneedn’t/youdon’thaveto四.在反意疑问句中，当附属部分有推测意义的情态动词时，疑问部分应根据情态动词后面的情况
3、来判断。如Hemustbeaworker,isn’the用must,may,might,maynot和can't+do或bee.g.Shemustbeathomenow.Theboymayplaynow.推测用must,may,might,maynot和can't+havedonee.g.Shemighthavebeenillyesterday.Hemusthaveholdtheparty.情态动词must,can,could,may,might表推测的用法情态动词中的must,can,coul
4、d,may,might都表推测。其中must的可能性最大，can/could次之，may/might最小。具体用法如下：2.can/could的用法（1）can表示推测“可能性”时，往往用于否定句或疑问句。（2）may,might表推测时，可以用于否定句，意思是“可能不、也许不”，但不用于疑问句。一情态动词表示推测的用法及练习(must/can’t/maymightcould)________表示一定;______表示可能;______表示不可能二以MustI……开头的句子；肯定回答：Yes,y
5、ou______否定回答：No,you_______________/No,you________.1.―Whosenotebookisthis?―It_______Jim’s.Ithashisnameonit.(2012贵州)A.can’tbeB.mustbeC.canbe2.—Isthatyourteacher?—That_____beMr.Wang.HehasgonetoJapanwithhiswife(2012甘肃)A.can’tB.mustn’tC.maynot3.—IsMariakn
6、ockingatthedoor?(2012湖北)—It______beher.SheisinAustralianow.A.maynotB.needn'tC.mustn'tD.can't4.—IsJimcomingbytrain?(2012四川凉山)—I’mnotsure.He_____drivehiscar.A.mustB.mayC.need5.—IthinkthemanovertheremustbeBob.—it____behim.hehas____toAustralia.（2011山东）A.
7、can’t；goneB.can’t；beenC.maynot；beenD.mustn’t;gone6–IsMr.Browndrivinghere?(2008·安徽中考)-I’mnotsure.He_______comebytrain.A.mayB.shallC.needD.must7_______Ifinishmyhomeworknow?---No,you_____.Yourworkisovertoday.ACan’t;mustBMust;don’thavetoCMaycouldn’tDCoul
8、dn’t;could1John___cometoseeustonight,butheisn'tverysureyet.A.mayB.needC.can’tD.must2Johnisn’tintheclassroom.He_______playsoccerontheplaygroundwithBob.A.canB.mustC.shouldD.can’t3That_______notbeherhusband.Sheisstillsingle.A.mayB.canC.couldD.might4You_
