Unit2WildlifeProtectionDiscoveringusefulstructures课件高中英语人教版2

Thepassivevoice

被动语态二、主语是动作的承受者。

e.g.Thetreewasplantedbyus.一、结构：be+done“三变”原句主语by

短语原句宾语主语谓语由主动被动“三不变”原句意思不变原句时态不变原句主谓宾以外成分不变主动语态变被动语态的原则主动语态定义：表示主语是谓语动词的发出者。Ourteachers

allowusnottodohomework.被动语态定义：表示主语是谓语动词的承受者。动词形式：bedone(过去分词)被：byWe

areallowednottodohomeworkbyourteachers.

Iusewatertowatertheflowers.主

主动语态

Waterisusedby

metowatertheflowers.被动语态谓宾一般现在时一般过去时现在进行时过去进行时一般将来时现在完成时含有情态动词总结：各种时态下的被动语态am/is/aredonewas/weredoneam/is/are+beingdonewas/were+beingdonewill/begoingto+bedonehave/has+beendone情态动词+bedone主语是动作的承受者,表示说话时或现阶段某个被动的动作正在进行。Thebridgeisbeingbuiltacrosstheriverthismonth.Anewfilmisbeingshowninthetheatre.一.

定义现在进行时：am/is/are+V-ing被动语态：

be+done(V过去分词)主语+

am/is/are+being+done+(by…)表进行表被动现在进行时的被动语态：二.

结构(1)肯定形式：主语

+

be(am/is/are)＋being＋doneThehouseisbeingpainted.(2)否定形式：主语

+be(am/is/are)＋not＋being＋doneThetreesarenotbeingwatered.(3)一般疑问形式：be(Am/Is/Are)

＋

主语

＋

being

＋

done？AmIbeingwatchedover?(4)特殊疑问句形式：特殊疑问词

+

be(am/is/are)

+

主语

+

being

+

done？When

isthewallbeingpainted

?【Practice】句型转换Theyarebuildingamodernschoolinhishometown.①Amodernschool____________inhishometown.(改为被动语态)②Amodernschool_______________inhishometown.(改为否定句)③__________________________inhishometown)？(改为一般疑问句④_______________________________?(对句中的inhishometown进行提问)isbeingbuiltisnotbeingbuiltIsamodernschoolbeingbuiltWhereisamodernschoolbeingbuilt①

表示说话时正在进行的被动动作，句中常有now,rightnow,atthemoment,atpresent

等时间状语。Somefoodisbeingeatenbythebearrightnow.Look!Thebabyisbeingtakencareofbyheraunt.Thediseaseisbeingstudiedatpresentbyscientist.三.

用法②

表示现阶段正被进行的动作，但此动作在此时此刻不一定正在发生。Theproblemoffoodsafetyisbeingstudiedbyscientists.—CouldIuseyourcarplease? —Mineisbeingrepairedbytheworkers.③表示一种经常性的被动行为,常与always,constantly,frequently

等词连用,往往带有赞扬、羡慕、埋怨、讨厌等感情色彩。Ifeelverypuzzledthatthegoodsinourshoparealwaysbeingstolen.Childrenofourneighborsareconstantlybeingpraisedbyourparents.④

与某些情态动词连用，表示对正在发生的动作的推测。Tommustbebeingstuckinthecar.Hemaybebeingscoldedbyhisfatherattheverymoment.Thestudentcannotbebeingpunishedbytheirteacherrightnow.【Practice】

用所给动词的适当形式填空①Thelittleboyhasmaderapidprogressrecentlyandisalways_____________(praise)byhisteachers.②TheplantoexploretheSouthPole_____________(make)thesedays.③Thequestionaboutwhereisthefactorygoingtobebuilt_________________(discuss)atthemoment.beingpraisedisbeingmadeisbeingdiscussed①不可遗漏being现在进行时的被动语态中，be为第一助动词，being为第二助动词，缺一不可，且位置不可互换。此结构若缺少being，则就成为一般现在时的被动语态或系表结构。四.

注意要点

Look！Thechildrenarebeingtaken

careofbytheiraunt.Childrenaretakengoodcareofatschool.A

folk

songisbeingsungnext.下面将唱一首民歌。

Apartyisbeingheldtonight.今晚将要举行一场晚会。②有时可表示按计划或安排将要进行的一个被动动作(此种用法仅限于少数及物动词,如:hold,take等)。这本书是他的。Thebookisbeingbelongedtohim.Thebookbelongstohim.③不及物动词(短语)、非延续性动词、表示存在意义/所属关系/静态特征的动词以及系动词不用于现在进行时的被动语态。【Practice】根据汉语完成句子①Thesportcenter____________________________________(建造中)andissaidtobeopentothepublicin2021.②Anewmedicinetocurecancer__________________(研发中)atthepresenttime.③Thecauseoftheaccident__________________(调查中)asthereisnoneedtoworry.④He_________________(惩罚)byourteacheratthemoment.isbeingconstructed/underconstructionisbeingdevelopedisbeinglookedintoisbeingpunished⑤Itisreportedthatmanyanewhouse__________(build)atpresentinthedisasterarea.

isbeingbuilt⑥TraditionalfolkartsofTianjinlikepapercutting_______________(exhibit)atthecultureshowofthe2010ShanghaiWorldExpo.arebeingexhibitedisbeingrepaired⑧Wouldyoupleasekeepsilent?Theweatherreport________________(broadcast)andIwanttolisten.isbeingbroadcastExercises3onP18inthetextbook.LiuTaowouldliketoexpresshisconcernoverthewetlandinhishometown.Helphimfinishthepassagewiththepresentcontinuouspassivevoiceoftheverbsinbrackets.Inthewetlandofmyhometown,therearemanydifferentkindsofanimals,includingwildbirds,fish,snakes,insectsandsoon.WhenIwasinprimaryschool,Ioftenwenttherewithmyfriendstowatchthebirdsandstudythem.Thatwasaninterestingplaceforallofus.Butthingshavebeguntochangeinrecentyears.Smallbirds________________(catch)withnets.Wildducks_______________(sell)atfoodmarkets.Fishandsnakes_______________(kill)forfoodinrestaurants.Andevenworse,thewetland________________(destroy).Somepart__________________(cover)withnewhouses.Youcanseerubbisheverywhere.Thewetland________________(pollute)seriouslyeveryday.Iamveryworriedaboutit.Whatcanwedo?arebeingcaughtarebeingsoldarebeingkilledisbeingdestroyedisbeingpollutedarebeingcoveredare

going

to

be

washedbyhasbee