【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(14)页，1.317 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)a

boutthewondersoftheWorldWideWeb．2．(教材P28)ButtheInternet_________________(do)muchmoreforpeoplethansimplymakelifemoreconvenient．3．(教材P28)Manypeople___

____________________(help)bytheclub．hasbeenwrittenhasdonehavebeenhelped栏目导引UNIT3THEINTERNET4．(教材P28)Shenolongerfeelslonely,andhercompany_________

_________(become)quitesuccessful．5．(教材P32)TodayIthoughtI’dblogaboutaquestionthat_________________(ask)manytimes—howdoy

oustaysafeonlineandavoidbadexperiencesontheInternet?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◆H

ehasbeenselectedtotakepartinthesportsmeeting．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。◆Hasthedateforthenextme

etingbeendecided?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Thechildrenhavealreadybeentol

dthegoodnews．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’tbeentold

thegoodnewsyet．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alread

y,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。◆Financialproblemsofthecompanyhavebeendiscussedfornearlytwohours．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。◆Yousho

uldn’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：alr

eady已经yet已经recently/lately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/overthepa

st/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．→Agoodplace

_______________tobuildatempleinthevillage．③Wehaven’tyetdecidedhowtosolvethatdifficulttechnologicalproblem．→Howtosolvethatdiffic

ulttechnologicalproblem___________________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_________________foroveronethousandye

ars．hasbeenfinishedhasbeenused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．→Hehasa

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

,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。◆Hegavethelittlegirlanapple．→Thelittlegirlwasgivenanappl

e(byhim)．→Anapplewasgiventothelittlegirl(byhim)．栏目导引UNIT3THEINTERNET【即时演练3】——将下面句子变为被动语态①Ihaveaskedhertohelpyou．→_____________________________

_________________________②Wehaveplantedmanytreesonthehillinthelast5years．→______________________________________________________③Hehassen

tmeane-mail．→______________________________________________________→______________________________________________________Ane-mailhasbeensenttom

e．Ihavebeensentane-mail．Shehasbeenaskedtohelpyou．Manytreeshavebeenplantedonthehillinthelast5years．