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•一构成主语是动作的承受者，用被动语态。1.现在时被动语态：am/is/are+及物动词的过去分词，（be是助动词）e.g:Englishisspokenbymanypeople.Germanisn’ttaughtinourschool.IsFrenchstudiedinyourschool?grammar:2.过去时的被动语态：was/were+及物动词的过去分词e.g:Thesenewhouseswerebuiltin2000.Mybikewasn’tmadeinShanghai.WasthiskindofmachinemadeinShenzhen?注意：被动语态中be的形式是由主语决定的3.情态动词的被语态：must/can/may+be+动词的过去分词e.g:Thecarmustn’tbestoppedhere.Canthischairbetakenoutoftheroom?Thisjobmustbefinishedontime.•小窍门：我们可以这样看被动语态的基本构成：be+及物动词的过去分词表示时态表示被动要变化不变化•二被动语态的几种类型：1主动句中有一个宾语的被动语态Hesawherintheshopyesterday.Shewasseenintheshopyesterday.2主动句中有二个宾语的被动语态Jimgavemeabook.IwasgivenabookbyJim.AbookwasgiventomebyJim.3主动句中含有宾语补足语句子的被动语态Mothertoldmenottobelate.Iwastoldnottobelatebymother.Isawmotherplantingflowersinthegarden.Motherwasseenplantingflowersinthegarden.Theymadehimwork12hoursaday.Hewasmadetowork12hoursaday.4短语动词的被动语态Icantakegoodcareofthebaby.Thebabycanbetakengoodcareof.三被动语态的注意事项1“主语+系动词+表语”的句子没有被动语态2therebe句型没有被动语态3主动句中宾语是反身代词的没有被动语态4主动句的谓语动词是不及物动词的没有被动语态，但与介词搭配后，则有:Thenurselookedafterhimcarefully.Thebabywaslookedafterbythenursecarefully.•Practice:1MustIpayforitatonce?_____it______________atonce?2Wewillbuildanewlab.Anewlab_____________.3Theyaren’tstoppingthetrafficnow.Thetraffic_______________now.4Howlonghaveyoukeptthebook?Howlong____thebook________?Mustbeenpaidforwillbebuiltisn’tbeenstoppinghasbeenkept5Ifyourhomework______(do)well,youmaygotoplay.6Mr.Greenwasseen_______(grow)trees.7Theblackboardwas________(look)carefullybythestudents.8Theshipmodel____be____(make)intwodays.isdonetogrowlookedatwillmadeTranslatethefollowingsentences.•1.我们必须采取措施以阻止河流的进一步污染。•Something____________________tostoptheriverfrombeingpollutedmore.•2.世界上讲英语的人是最多的。English____________bythelargestnumberofpeopleintheworld.•3.明年我校还要修一幢新教学楼。•Anothernewteachingbuilding_________________inourschoolnextyear.•4.中国南方种水稻。•Rice__________inSouthChina.•5.昨天爸爸给你买了一辆自行车。•Abike______________foryoubyyourfatheryesterday.•6.前天在街道拐弯处发生了一起车祸。•Acaraccident____________atthestreetcornerthedaybeforeyesterday.