be+V-ppcan/must/may/should+Wecleantheclassroomeveryday.Theclassroomiscleaned(byus)everyday.Weshouldcleantheclassroomeveryday.Theclassroomshouldbecleaned(byus)everyday.WemustkeepteenagersawayfromtheInternet.TheteenagersmustbekeptfromtheInternet(byus).结构：主+___be+____.+其他（肯）主+_____+____+be+______+其他（否）情态动词V-pp情态动词notV-ppTheclassroomiscleaned(byus)everyday.Theclassroomshouldbecleaned(byus)everyday.TheteenagersmustbekeptfromtheInternet(byus).Istheclassroomcleaned(byyou)everyday?Shouldtheclassroombecleaned(byyou)everyday?MusttheteenagersbekeptfromtheInternet(byus)?Youngtreesshould________everyyear.A.beplantedB.plantedC.plantⅡ.按要求完成下列各句每空一词含缩写。1.Wemustdotheworkrightnow.(改为被动语态)___________________________________rightnow.ATheworkmustbedoneⅠ.选择最佳答案。2.Teenagersshouldbeallowedtogooutwiththeirfriendsonschoolnights.(改为否定句)Teenagers_____________________togooutwiththeirfriendsonschoolnights.3.Abookshouldbereadeachmonth.(改为一般疑问句)___________________________________eachmonth?shouldn’tbeallowedShouldabookberead1.Theirworkmust____________(finish)byfouro’clock.2.Yourhomeworkshould___________(do)byyourself.3.Thesebooksmustn’t__________(take)outofthereadingroom.4.Shouldthesefood_________(keep)dry?befinishedbedonebetakenbekept用所给词的适当形式填空。Ⅱ.句型转换1.Youshouldmakeupthebedeveryday.(改为被动语态)Thebed_____________________upeveryday.2.Wecan’tseestarsinthedaytime.(改为被动语态)Stars_____________________inthedaytime.3.Youmustreturnthebookontime.(改为一般疑问句)_______thebook______________ontime?shouldbemadecan’tbeseenMustbereturned2.Parentsshouldencourageteenagerstodosocialworkfortheircommunity.3.CanLucydoherhomeworktomorrowinstead?Teenagersshouldbeencouraged(bytheirparents)todosocialworkfortheircommunity.Canthehomeworkbedone(byLucy)tomorrowinstead?4aRewritethesentencesaccordingtotheexample.4.DoyouthinkwemustkeepteenagersawayfromtheInternet?5.Parentsshouldgiveteenagerschancestomaketheirowndecisions.DoyouthinkteenagersmustbekeptawayfromtheInternet?Teenagersshouldbegivenchancestomaketheirowndecisions.Thekeysbeaskedareallowed4bFillintheblankswiththecorrectformsofthewordsinbrackets.beeducatedstartmovetakecontinue
