the passive voice

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1、ThePassiveVoicebe+done被动语态的基本结构:有各种时态的变化有不同规则的变化Givethepastparticipleoftheseverbs:1.watch-clean-work-2.practice-close-live-3.study-carry-try-4.stop-plan-drop-(一般情况在动词原形后加-ed)(以不发音e结尾的加-d)(以辅音加y结尾的，变y为i加-ed)(以重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加-ed)someirregularve

2、rbs:amisarebeenhavehashaddodonewritewrittengogonewatchedcleanedworkedpracticedclosedlivedstudiedcarriedtriedstoppedplanneddroppedSavetheearth,protectourenvironmentIt’sveryimportantforustoprotecttheenvironment.Everydaywastewater_______intorivers.Theair______

3、___.manytrees________down.Litter_________away.Wildanimals_________…arecutisthrownarekilledispouredispollutedpourpollutecutthrowkill一般现在时的被动语态:am/is/are+doneExercise:1.Knives__________(use)forcuttingthings.2.Theclassroomisverycleanandit________(clean)byuseve

4、ryday.3.Beijingisabeautifulcityandit________(visit)bymanypeopleeveryyear.areusediscleanedisvisitedThoughmomwasn’tathomelastnight,LilyandLucystillhadagooddinner.Thevegetables________byLucy.Thefood_________byLily.Andaftersupper,thedishes__________byLily.Theta

5、ble_________byLucy.Thekitchen________bythemtwo.werecutwascookedwerewashedwaswipedwascleanedcutcookwashwipeclean一般过去时的被动语态:was/were+doneExercise:1.Anewmachine_____________(invent)lastmonth.2.They___________(ask)aquestionbytheteacheryesterday.3.Manystudents__

6、_______(send)toAmericatostudybyourschoollastyear.wereaskedwasinventedweresentRulesfortheChemistryLabRulesfortheChemistryLab1.Thelab_______________clean.(should,keep)2.Wastepaper_______________intothepaperbasket.(should,throw)3.Nothing__________________witho

7、utpermission.(may,touch)4.Noeatinganddrinking____________inthechemistrylab.(can,allow)5.Everything________________aftertheexperiment.(must,putback)canbeallowedshouldbethrownmaybetouchedmustbeputbackshouldbekept带有情态动词的被动语态:情态动词+be+donePractice:1.Englishmust_

8、__________________(learn)well.2.Thecomputercan______________(repair)byus.3.Wildanimalsshould_____________(protect).berepairedbelearned/learntbeprotectedDeyangisadevelopingcityinSichuan.Somenewbuildings