【文档说明】3　UNIT 3　 Section Ⅲ　Discovering Useful Structures-（新教材）高中英语人教版必修2 .ppt，共(16)页，1.422 MB，由小喜鸽上传

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SectionⅢDiscoveringUsefulStructuresUNIT3THEINTERNET栏目导引UNIT3THEINTERNET现在完成时的被动语态1．(教材P28)Much________________________(write)aboutthewon

dersoftheWorldWideWeb．2．(教材P28)ButtheInternet_________________(do)muchmoreforpeoplethansimplymakelifemoreconvenient．3．(教材P28)Manypeople_____

__________________(help)bytheclub．hasbeenwrittenhasdonehavebeenhelped栏目导引UNIT3THEINTERNET4．(教材P28)Shenolongerfeelslonely,andherco

mpany__________________(become)quitesuccessful．5．(教材P32)TodayIthoughtI’dblogaboutaquestionthat_________________(ask)manytimes—howdoyoustaysa

feonlineandavoidbadexperiencesontheInternet?hasbecomehasbeenasked栏目导引UNIT3THEINTERNET一、现在完成时的被动语态的结构肯定式主

语＋have/hasbeendone．．．否定式主语＋have/hasnotbeendone．．．一般疑问式Have/Has＋主语＋beendone．．．？特殊疑问式疑问词＋have/has＋主语＋beendone．．．？

栏目导引UNIT3THEINTERNET◆Hehasbeenselectedtotakepartinthesportsmeeting．他已被挑选出来参加运动会。◆Theinkhasnotbeenremovedfromhisovercoat．墨迹还没有从他外套上

去掉。◆Hasthedateforthenextmeetingbeendecided?下次会议的日期已确定了吗？◆Howlonghasthebatterynotbeenchanged?电池多久没有更换了？栏目导引UNIT3THEINTERNET【即时演练1】——句型转换Thec

hildrenhavealreadybeentoldthegoodnews．①将上面的句子变为否定句。________________________________________________________②将上面的句子变为一般疑问句。__________________________

______________________________③对上面句子中的Thechildren进行提问。________________________________________________________Whohasbeentoldthegoodnewsyet?

Thechildrenhaven’tbeentoldthegoodnewsyet．Havethechildrenbeentoldthegoodnewsyet?栏目导引UNIT3THEINTERNET二、现在完成时的被动语态的用法1．现在完成时的被动语态

同它的主动语态一样，强调过去的动作对现在造成的影响或结果，通常与already,yet,just,never,recently等副词连用。◆Themachinehasalreadybeenrepaired．机器已经修好了。栏目导引UNIT3THEINTERNET2．表示一

个被动的动作或状态开始于过去，持续到现在，并可能持续下去，常与for或since引导的时间状语连用，或用于“Howlong．．．？”句型中。◆Financialproblemsofthecompanyhavebeendiscus

sedfornearlytwohours．公司的财务问题已被讨论了近两个小时了。◆Howlonghasthisfilmbeenshown?这部电影已放映多长时间了？栏目导引UNIT3THEINTERNET3．用在时间或条件状语从句中，表示将来某时已完成的动作，即用现在完成时的被动语态代替将

来完成时的被动语态。◆Youshouldn’tleaveschoolbeforeyourhomeworkhasbeenfinished．在你的作业没完成之前你不应该离开学校。栏目导引UNIT3THEINTERNET常与现在完成时连用的时间状语有：already已经yet已经recently/lat

ely最近sincethen从那时起eversince自那以来ever曾经sofar迄今为止bynow到现在为止foralongtime很长一段时间inrecentyears在最近几年里in/during/overthepast/lastyears在过

去的几年里栏目导引UNIT3THEINTERNET【即时演练2】(1)用现在完成时的被动语态改写句子①Jack’sbosshasalwayspraisedhimforhisdevotiontowork．→Jack______________

_____________byhisbossforhisdevotiontowork．②Theyhavefoundagoodplacetobuildatempleinthevillage．→Agoodpl

ace_______________tobuildatempleinthevillage．③Wehaven’tyetdecidedhowtosolvethatdifficulttechnologicalproblem．→Howtoso

lvethatdifficulttechnologicalproblem___________________yet．hasalwaysbeenpraisedhasbeenfoundhasn’tbeendecided栏目导引UNIT3THEINTERNET(2)完成句子④当我的

家庭作业完成时我就回家。Iwillgohomewhenmyhomework_________________．⑤纸币已被使用了1000多年了。Papermoney_________________foroveronethousandyears．hasbee

nfinishedhasbeenused栏目导引UNIT3THEINTERNET(1)只带有一个宾语的动词变为被动语态时，将主动语态的宾语变为被动语态的主语。◆Hisbosshasalreadypunishedhim．→

Hehasalreadybeenpunished(byhisboss)．(2)带有双宾语的动词，如give,send,bring,take,teach,show,tell,make,sing,write,re

ad,sell,buy,pay,lend,pass,promise等，变为被动语态时，一般将间接宾语变为被动语态的主语，若将直接宾语变为被动语态的主语时，间接宾语前面要用相应的介词。◆Hegavethelittleg

irlanapple．→Thelittlegirlwasgivenanapple(byhim)．→Anapplewasgiventothelittlegirl(byhim)．栏目导引UNIT3THEINTER

NET【即时演练3】——将下面句子变为被动语态①Ihaveaskedhertohelpyou．→______________________________________________________②Wehaveplantedmanytr

eesonthehillinthelast5years．→______________________________________________________③Hehassentmeane-mail．→__________

____________________________________________→______________________________________________________Ane-mailhasbeensenttome．Ihavebeensentane-ma

il．Shehasbeenaskedtohelpyou．Manytreeshavebeenplantedonthehillinthelast5years．栏目导引UNIT3THEINTERNET栏目导引UNIT3

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