新课标必修三Unit 1 情态动词语法及练习.ppt

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1、GrammarModalverbs情态动词Readthesentencesonpage5ofstudents’bookandtrytounderstandthefunctionsofthemodalverbs.Telloutthefunctionsofthefollowingmodalverbsinthesentences1.canandcouldCouldyouoffermesomekindofjob?CanIuseyourpen?Canyourideabike?CanIhelpyou?Howcouldyousaythat?Youcan`tbeserious！你该不会是真

2、的吧！Whatevercantheywant?他们究竟想要什么？Canhebeathome?(politerrequest)(politerequest)=may(ability)(politerequest)=may(blaming)(guessing)(surprised)(1)ability平时的能力：能，会IcanspeakJapanese,butIcan`twriteit.Hecouldswimwhenhewas4yearsold.can&could/beableto的区别：a)beableto有很多时态，而can只有一般现在是和过去时could.Atthisti

3、meofnextyear,Iwillbeabletosupportmyself.Abletosolvetheproblemsmyself,thestudentdidn`tworryaboutexamatall.b)beableto还指具体的某次能力=succeed(in)doingsthYesterdayTomwasabletoarriveontime.c)否定句中was/werenotabletodo=couldnotdosth练习：1.He__________singEnglishsongsattheageof5and____________sing"MerryChri

4、stmas".2.I________________gotoworkforamonth.3.Thefirespreadveryquicklybuteveryone____________getoutintheend.couldwasableto(2）request/permission允许，请求=may/might,只是could比can更委婉，客气:可以—Can/CouldIhavealookatyourphotos?---Ofcourse,youcan.Youcansmokeinthisroom.WhatcanIdoforyou?练习:---Couldyouhelpme

5、solvethemathproblem?---Sorry,I_____.haven`tbeenabletocan`twasableto(3)guess:很有可能，也许具体情况a)can(具体某次猜测)：否/问（平时或者理论上的可能）：肯---Canshebeintheclassroom?---No,shecan`t(不可能)beinit.100%的否定Runningontheicyroad,carscanhaveaccidents.b)could:肯，否，问（可能性比can小）Marycouldbeathome.Shecouldn’t（很可能没）betellinglies.

6、非100%的否定c)对过去已经发生的事情进行猜测canhavedonesth否/问couldhavedonesth否/问/肯Whydidyouthrowthebottleoutofthewindow?Itcouldhavehurtsomebody.（肯定句）练习：1.Thestoryhetold____________betrue,becauseitwasnotreasonable.2.Thestoryhetold______betrue,becauseitwasreasonableinaway.3.Thestoryhetold________________betrue,

7、butitwasreasonableinaway.4.---Ican`tfindmypurseanywhere.---You____havelostitwhileshopping.A.mayB.canC.shouldD.would5.It____bedangeroustopractisegymnasticsalone.You`dbetterpracticewithyourteammates.A.canB.couldC.isabletoD.may6.---Whenshallweholdthemeeting?---It