【精品PPT】现在完成时的被动语态.ppt

外研版初三 上 module4 unit3languageinuse languagepractice paperandprintinghavebeenusedforages thebatteryhasn tbeenchangedforacoupleofmonths hasitbeenpublishedyet 现在完成时的被动语态 have has not been 过去分词 informationcanbekeptoncd roms bookscouldonlybeproducedoneatatime canbooksbereplacedbycomputers 情态动词的被动语态 情态动词 not be 过去分词 当我们不知道谁是动作的执行者 或者没有必要指出谁是动作的执行者时 或者只需强调动作的承受者时 要用被动语态 被动语态 主语是动作的承受者 conclusion 一 一般现在时 am is are 动词的过去分词一般过去时 was were 动词的过去分词情态动词 aux v must can could may be 动词的过去分词 被动语态的构成 be 动词的过去分词 现在进行时 be am is are being 动词的过去分词一般将来时 willbe begoingtobe 动词的过去分词现在完成时 have has been 动词的过去分词 am is are done was were done am is arebeing done was werebeing done shall willbe done wouldbe done have hasbeen done hadbeen done 主动语态如何改成被动语态 主动语态的宾语改成被动语态的主语 2 主动语态的谓语动词改成被动语态的谓语动词 do bedone3 注意保持时态和人称的一致 4 带双宾的谓语动词有两种改法 当把直接宾语改成主语时 谓语动词后必须加适当的介词 tofor conclusion 二 如 give begivento此类动词还有 passshowsend 再如 buy beboughtfor此类动词还有 makedrawcookmend 5 一些动词不定式在主动语态中省略to作宾语补足语 改成被动语态时 to必须还原 注 1 不及物动词 vi 不用被动语态 如 happen takeplace appear disappear 1 myunclegavemeagiftonmybirthday 2 weoftenhearhimplaytheguitar iwasgivenagiftonmybirthday agiftwasgiventomeonmybirthday heisoftenheardtoplaytheguitar 几种特殊结构 注意 see watch hear notice feel make listento lookat等动词 短语后作宾语补语的不定式都不带to 但改成被动语态后必须带to arecorderisusedinourenglishclasseveryday let spractice recorderenglishclass use for oftenplay footballisplayedallovertheworld acameraisusedfortakingphotos robyesterday aman madesatellitewassentupintospacelastyear abankwasrobbedyesterday mustplant coverwith inafewyears time thetreemustbeplantedontheground thegroundwillbecoveredwithtreesinafewyears time atallgivesoon theywillbesenttothehospitalrightnow atalkwillbegivensoon dig theearthisbeingdugnow thefoodhasbeeneatenupalready exercises completethesentenceswiththecorrectformofthewords 1 ithinkonedaybooksmay place completely 2 mybike leave atschool soihavetotakethebustoschooltoday 3 thebattery charge yet howcaniusemyrecorder hasbeenleft hasn tbeencharged beplaced 4 papershouldnot throw away 5 booksandothermaterialcan borrow fromthelibrary 6 i veboughtasecond handmp3player andabout1 000songshave download ontoit beborrowed bethrown beendownloaded 7 hasthecomputer repair yet ineedtowritemyarticlewithit 8 whathave turnon theradio beenturnedon beenrepaired exercises completethequizquestionsandchoosethecorrectanswer who pyramids build whowerethepyramidsbuiltby a theegyptiansb theancientgreeksc theromans 2 what use tomakepapersincethe19thcentury whatwasusedtomakepapersincethe19thcentury a woodb silkc cotton 3 where thestoryofromeoandjuliet set wherewasthestoryofromeoandjulietset a innewyorkb inathensc inlondon 4 where theworld soldestbookprintedonpaper discover wherewastheworld soldestbookprintedonpaperdiscovered a inindiab inchinac inegypt5 howlong computers use howlonghavecomputersbeenused a forlessthan50years b for50yearsc formorethan50years exercises makequestionsandwriteanswers what shouldn t do withpaper waste whatshouldn tbedonewithpaper itshouldn tbewasted 1 what can use tomakepaper manythings 2 what might use toreplacebooksoneday computers 3 how must printers keep ingoodconditions 4 where can music keep onmp3players howhastheplacechanged usethesewords add change open paint put turnon takeaway thewindowthecapthelightthebasketballthesweaterthepaintingtwochairsthebooksthedishes have hasbeen exercises completethepassagewiththecorrectformofthewords fromabout500bc pens forwriting thefeathersoflargebirds anddried thepointofeachfeatherwassharpened call clean develop introduce invent produce spread use write wereused werecleaned thenpeopleusedthemtowritewithink manyfamousworks suchasshakespeare splays withthesepens theninthe18thcentury apenwithasteelwritingpoint onlyafewwordscould however beforethewriterhadtofillthepenwithinkagain werewritten wasinvented wereproduced manyyearslater thefountainpen fromtheseearlypens in1950 aeuropeancalledlaszlobiroinventedtheballpointpen thepopularityofwriting quicklywiththe oftheballpointpen eventoday ballpointpen orbiros asthey aremuchlessexpensive comparedwiththefountainpens spread wasdeveloped arecalled introduction exercises completethesentenceswiththephrasesinthebox 1 couldyouimagineadigitalimageofyaomingonthewall aposter ratherthan byhand forages fromnowon iwonder ratherthan 2 thingsmade areusuallymoreexpensivethanthoseproducedinfactories 3 howoldbooksareactuallydownloadedontocomputers 4 ihaven tseenmybestfriend 5 we reusingtoomuchpaper i mgoingtoreadallmymagazinesonline byhand fromnowon forages iwonder aroundtheworld e bookaswecansendmailbyemail wecanreadbooksbye booknow e booksfirstappearedinthe1990sandhavemadegreatimprovementintechnology notescanbewrittenonthee book newbookscanbeeasilydownloadedfromtheinternet andit smucheasierandquickertosearchforpassages what smore alotofpaperwillbesaved nowadays themostadvancede bookisabout620g 18cmlong 12cmwideand2cmthick itlookslikearealbook butthee boo