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1、被动语态一、什么是语态？语态是英语动词的一种表现形式，用来说明主语和谓语动词之间的关系。二、语态的种类：（1）主动语态（2）被动语态三、什么是主动语态？什么是被动语态？四、被动语态的构成：(八种时态下的被动语态）be+及物动词的过去分词can/may/must…+be+过去分词am/is/are+done(过去分词)一般现在时2)has/havebeendone现在完成时3)am/is/arebeingdone现在进行时4)was/weredone一般过去时5)hadbeendone过去完成时Allthepreparationsfo
2、rthetaskhavebeencompletedAnewcinemaisbeingbuilthere．Iwasgiventenminutestodecide.Bytheendoflastyear,anothernewgymhadbeencompletedinBeijing.1Wecleanourclassroomeveryday.2,Peopleprodoceteainthesouth.3,Shewaterstheflowerstwiceaweek.4,Theysellgoodbikesinthisshop.5,Ordinaryp
3、eoplecausealotofairpollution.6,TeachersteachEnglishinourschool时态单复数用不用by短语理解1,Sheceanedallthedeskstoday.2,WeboughtournewTVinthisshop.3,Peopleplanted5000treesthere.4,Theteachertoldhimtodoitagain.5,Wewillbuildanewschoolhere.6,Wearegoingtoraisemoneyforprotectingourenviron
4、ment.7,Sheisgoingtotakeallthebooksthere.8,Wecancleanourroomthisafternoon.9,Theymustdotheirhomeworktoday.10,Wehavetofinishtheworktaday.1,Wehavefinishedallthatworktaday.2,Hehasreturnedallthebookstohim.3,Theyarecleaningtheroomnow.4,Sheissellingthegreenapples.5,Wesawhimgot
5、herebyhimself.6,ShemakeshersonreadEnglisheverymorning.7,She______(tell)togothereyesterday.8,Theboy______(take)tothehospitalatonce.9,Theworkmust_____(do)thisweek.6)was/werebeingdone过去进行时7)shall/willbedone一般将来时8）should/wouldbedone过去将来时被动语态的特殊结构形式 1）带情态动词的被动结构其形式为：情态动词＋b
6、e＋过去分词。AmeetingwasbeingheldwhenIwasthere.Hundredsofjobswillbelostifthefactorycloses.Thenewswouldbesenttothesoldier'smotherassoonasitarrived.Thebabycanbetakengoodcareofbythebaby-sitter.2）一些表示“据说”或“相信”的动词如believe,consider,expect,report,say,suppose,think等可以用于句型“It＋be＋过去分词
7、＋that从句”或“主语＋be＋过去分词＋todosth.”。有：Itissaidthat…据说,Itisreportedthat…据报道，Itisbelievedthat…大家相信，Itishopedthat…大家希望，Itiswellknownthat…众所周知，Itisthoughtthat…大家认为，Itissuggestedthat…据建议。Itissaidthattheboyhaspassedthenationalexam＝Theboyissaidtohavepassedthenationalexam5、主动语态变被动语
8、态应注意的问题1.把主动语态变为被动语态时，应保留主动语态原来的时态。如：Sheoftencleansthehouse.Thehouseisoftencleanedbyher.2.有些动词可以有双宾语，在用于被动结构时，通常变为主语的
