九年级第五单元.ppt

Unit5,Whataretheshirtsmadeof?,1a.Whatarethesethingsusuallymadeof?Matchthemwiththematerials.Morethanoneanswerispossible.,1.chopsticks,2.window,3.coin,4.stamp,5.fork,6.blouse,a.wood,b.gold,c.silver,d.paper,e.silk,f.glass,一般现在时的被动语态,1.主动语态和被动语态,A.主动语态：当主语为动作的执行者时，谓语的形式为主动语态。,e.g.ManypeoplespeakEnglish.,(主动语态，句子的主语manypeople是动作speak的执行者）,B.被动语态：当主语为动作的承受者时，谓语要用被动语态。,e.g.Englishisspokenbymanypeople.,(被动语态，句子的主语English是动作speak的承受者）,2.被动语态的构成,被动语态是由“助动词be及物动词的过去分词”构成。,注意：助动词be有人称，数和时态的变化，其变化规则与be作为连系动词时完全一样。,e.g.Theblouseismadeofsilk.,e.g.Thezipperisoftenusedinourdailylives.,e.g.ThetelephonewasinventedbyBellin1876.,e.g.Iamwokenupbymyalarmclockeveryday.,e.g.Thewindowsarecleanedbyusonceaweek.,3.含有情态动词的被动语态,结构：情态动词be及物动词的过去分词。,e.g.Teenagersshouldbeallowedtomaketheirowndecisions.,e.g.Yourroommustbecleanedeveryday.,e.g.Thisgamecanbeplayedinthewinter.,4.被动语态的用法,当我们不知道谁是动作的执行者，或者没有必要说明谁是动作的执行者，或者只需要强调动作的承受者时，要用被动语态。,e.g.IthinktheTVwasinventedafterthecar.,e.g.Ifyoubreaktheschoolrules,youwillbepunished.,请把下列各句改为被动语态,1.Peopleusestampsforsendingletter.Stamps_forsendinglettersbypeople.2.ManypeoplespeakEnglish.English_bymanypeople.3.Theymakethebikesinthefactory.Thebikes_theminthefactory.4.Wedontcleantheclassroomeveryday.Theclassroom_everyday.5.Hemilksthecowseveryday.Thecows_byhimeveryday.,are,used,is,spoken,are,made,by,isnt,cleaned,are,milked,1.复习本