Unit3TheWorldofSciencePeriod2Usinglanguage课件高一英语

Unit3TheWorldofSciencePresentperfectpassive1.Tounderstandthegeneralknowledgeofpresentperfectpassive.2.Tobeabletousepresentperfectpassive

inpropersituations.Learningaims1.Thisevening,I’llbetalkingtoDrRichardFairhurst,whosenewbookThe

New

Age

of

Invention

___just______________hasbeenpublished2.Iguessyou_______________(ask)aboutthetitleofyourbookbefore.havebeenaskedReadthesentences.Payattentiontothewordsinred.Leading-in4.Newinventionslike3Dprinters______________(use)tomakereplacementheartsandboneparts.havebeenused5.Nothinglikethis________________(invent)yetandI’dsaywe’realongwayfromaninventionlikethatatthemoment!hasbeeninvented3.Inaddition,importantadvances_______________(make)inmedicineandenvironmentalsciencethankstoincreasingcomputerpower.havebeenmade现在完成时的被动语态现在完成时的被动语态强调过去的动作对现在造成的影响或结果,但主语为动作的承受者,表示“……已经被……”。考点一现在完成时的被动语态的构成肯定式主语＋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...？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?下次会议的日期确定了吗？Howlonghasthebatterynotbeenchanged?电池多久没有更换了？【即学即练】(1)Theexperiment_____________successfully.这个实验做得很成功。(2)Thebooks______________________bythestudents.那些书还没有被学生们借走。hasbeendonehavenotbeenborrowed(3)____thesportsmeeting___________untilnextFriday?运动会已经推迟到下周五了吗?

(4)Soeventheolivewreath________________.就连橄榄枝花环也被取代了。Hasbeenputoffhasbeenreplaced考点二现在完成时的被动语态的用法1．表示被动的动作在说话前已经完成，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、lately等副词以及时间状语sofar、bynow、uptillnow、since、in/during/overthepast/lastyears等连用。Themachinehasalreadybeenrepaired.2．表示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...？”句子中。(2024·浙江一月高考)SydneyandtheNewSouthWalescoasthavebeenhitbyheavyrains.悉尼和新南威尔士州海岸遭受了暴雨袭击。Howlong

hasthisfilmbeenshown?这部电影已放映多长时间了？3．用在时间或条件状语从句中，表示将来某时已完成的动作。Youshouldn'tleaveschoolbeforeyourhomeworkhasbeenfinished.在你的作业没完成之前，你不应该离开学校。【温馨提示】现在完成时的被动语态与一般过去时的被动语态的区别现在完成时的被动语态侧重于表示一个被动的动作或状态尽管发生在过去，但该动作或状态对现在造成了影响或产生了结果；而一般过去时的被动语态表示一个被动的动作发生在过去的某个时间，其结果对现在没有影响。Thebigfirehasbeenputout.大火已经被扑灭了。Thebigfirewasputouttwohoursago.大火在两小时前被扑灭了。

【即学即练】(1)ProfessorJameswillgiveusalectureontheWesternculture,butwhenandwhere__________________yet.詹姆斯教授将要给我们作西方文化的演讲,但是时间和地点还没有决定。hasn’tbeendecided(2)Thewatch___just________________________.这只手表刚刚被清理和修理过。(3)_____theletters___________?信已经寄出去了吗?(4)______________themachine_____________?这个机器被修了多长时间了?hasbeencleanedandrepairedHavebeenpostedHowlonghavebeenrepaired(5)They________________byusfortwoweeks.他们得到我们帮助有两周了。(6)Theparty_______________sincetheNewYear.自从新年就计划这次聚会了。havebeenhelpedhasbeenplannedSummary现在完成时的被动语态1.现在完成时的被动语态强调过去的动作对现在造成的影响或结果,但主语为动作的承受者,表示“……已经被……”。2.现在完成时态的被动语态的构成:have/hasbeendone3.现在完成时态的被动语态的用法：（1）表示被动的动作在说话前已经完成，强调过去的动作对现

在造成的影响或结果，通常与already,yet,just,recently,lately等副词以及时间状语sofar,bynow,since,in//overthepast/lastyears等连用。

（2）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等引导的时间状语连用,或用于Howlong...?句型中。

（3）用在时间或条件状语从句中，表示将来某时已完成的动作。Ⅰ单句语法填空1.Manynewbridges_________________(built)since2010.

2.Ourclassroom_________________(clean);youneedn’tcleanitnow.

3.Allpossiblemeans_________________(try),butnothingcanpreventthebuildingsfrombeingpulleddown.

4.Manyanewmeasure_________________(put)forwardtoreduceairpollutionsofar.

5.Theconstructionofthetworailwaylines_________________(complete)bynow.

havebeenbuilt

hasbeencleanedhavebeentried

hasbeenput

hasbeencompleted6.Morethan50，000yuan

(raise)forthepoorfamilysincethegroupwasfounded.7.BlackFriday

(regard)asthebeginningoftheholidayshoppingseasonforyears.8.Sincetheearly1990s,alotofclinics

(found)inthiscountrytotreatpoorpeopleforfree.9.Overthepastthreeyears,thepaintings

(take)tomorethan20museumsintheworld.10.Sofar,manyvillages_______________(visit).hasbeenregardedhavebeentakenhavebeenfoundedhavebeenvisitedhasbeenraisedⅡ完成句子1．

(男孩们已经被多次告知)nottoswiminthatlake,butitdoesn'tmakeanydifference.2．WearegladtobetoldthatLiTao

(已经被复旦大学录取)forhistopscoresintheMathsContest.3．Whenandwheretogofortheon­salaryholiday

(没有确定)yet.4．Thoughwedon'tknowwhatwasdiscussed,yetwecanfeelthetopic

(已被改变了)．5．Thatbook