高一英语语法ppt课件.ppt

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1、ModalVerbsQ1：情态动词后跟什么？must+?事实Heishere.Heliveshere.推测Hemustbehere.Hemustlivehere.mustdo…事实Heissleepingnow.Hewassleepingthen.推测Hemustbesleepingnow.Hemustbesleepingthen.mustbedoing…事实Hehasbeenhere.Hehaslefthere.Hewashereyesterday.Helefthereyesterday.Hehadbeenhere.Hehadlefther

2、e.推测Hemusthavebeenhere.Hemusthavelefthere.Hemusthavebeenhereyesterday.Hemusthavelefthereyesterday.Hemusthavebeenhere.Hemusthavelefthere.musthavedone…事实Hehasbeenworkinglate.Hehadbeenworkinglate.推测Hemusthavebeenworkinglate.Hemusthavebeenworkinglate.musthavebeendoing…mustbedon

3、e----------------musthavebeendone----------------⑴Modalverbscanbefollowedby:主动被动一般式mustdo进行式mustbedoing完成式musthavedone完成进行式musthavebeendoing---IstayedatahotelwhileinNewYork.---Oh,didyou?You_____withBarbara.A.couldhavestayedB.couldstayC.musthavestayedD.wouldstay2.---Ididn’tk

4、nowyouweregoodfriends.---You_____.Ihaveknownhersinceshemovedhere.Youwerestudyingabroadthen.A.mayhaveB.musthaveC.couldn’thaveD.couldn’tQ2：情态动词表什么含义？1.表示能力2.表示义务、责任、必要3.表示请求、许可、禁止4.表示习惯和倾向5.表示意志6.表示推测6.情态动词表示推测can/could“可能”may/might“可能”should/oughtto“应该；总该；想必”must“一定；肯定”will/

5、would“会”理论(泛泛)可能性1.Inthosedays,amanmightbehangedforstealingasheep.=在那个年代，偷一只羊就可能被绞死。2.Itwasaplacewhereanythingcouldhappen.=那可是个任何事物都会发生的地方啊。3.Afterhavingababy,awomanmaysufferfromdepressionforseveralmonths.=妇女生了孩子后，可能有好几个月情绪低沉。4.ScotlandcanbeverywarminSeptember.=九月的苏格兰可能非常暖和

6、。(过去)(现在)现实(具体)可能性1.---WhereisEmma?---Idon'tknow.Shemaybeoutshopping.2.---WhereisSarah?---Shecould/may/mightbeatJoe'splace.3.---Whoisthatatthedoor?---Itcanonlybethepostman.(canonly=must)现实(具体)可能性句式情态动词含义肯定句must一定may/might/could可能(不用can)否定句can't/couldn't不可能maynot/mightnot可能不

7、疑问句can/could/might会(不用may)1.---Pollyisverylate.---She______________havemissedhertrain.2.---Thereisthedoorbell.Who___itbe?---It____beyourmother.SheisinEdinburgh.3.Where_________theybenow?4.________________thisbetrue?5.IfAisbiggerthanB,andBisbiggerthanC,thenA_____bebiggerthan

8、C.6.Ednaisn'tinheroffice.She_____havegonehome.may/might/couldcancan'tcould/canCoul