【课件】Unit2Period3Discoveringusefulstructures课件高中英语人教版(2019)必修第二册

Period3DiscoveringUsefulStructuresUnit2WildlifeProtectionReportanongoingeventReviewSimple（一般）Continuous（进行）Present（现在）do/doesTenseis/am/aredoingPerfect（完成）Perfectcontinuous（完成）Past（过去）Future（过去）Thepastfuture（过去将来）have/hasdonehave/hasbeendoingdidwas/weredoinghaddoneHadbeendoingwill/shalldowill/shallbedoingwill/shallhavedonewill/shallhavebeendoingshould/woulddoshould/wouldbedoingshould/wouldhavedoneshould/wouldhavebeendoingReviewChangethesentencesintothepassiveform.Activevoice(主动语态)

Passiveform(被动语态)

(1)Itakeabook.(1)Thebookistakenbyme.(2)Hewaterstheflowerseveryday.(2)Theflowersarewateredbyhimeveryday.(3)Thefamersdon'tgrowapplesonthefarm.(3)Applesarenotgrownbythefarmersonthefarm.(4)Canweputourbikeshere?(4)Canourbikebeputhere?(3)Whatmeasuresarebeingtakentohelpthem?(2)Whatisbeingdonetohelpthem?(1)Africanelephantsarebeinghunted.UnderlinethepresentcontinuouspassivevoiceinthesentencesanddiscussitsfunctionLead-inHuntersarehuntingAfricanelephants.Whatarepeopledoingtohelpthem?Whatmeasuresarepeopletakingtohelpthem?Findmoresentenceswiththesameverbforminthisunit.(16Paragraph2)Theyarebeinghunted,illegally,fortheirvaluablefur.(16Paragraph7)Muchisbeingdonetoprotectwildlife.Lead-in…ExploretherulesAbasketballisbeingplayedbyMiki.Abookisbeingreadbythegirl.Ourfurisbeingused

tomakesweatersforpeoplelikeyou.小结：PresentProgressivePassiveVoice

现在进行时的被动语态1.定义：________________________________________________________________________________________________1.定义：________________________________________________________________________________________________表示“某人/事此时此刻正在被…”，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。2.结构

1）肯定形式：am/is/are＋being＋过去分词Thehouseisbeingpainted.2）否定形式:am/is/are＋not＋being＋过去分词Thetreesarenotbeingwatered.3）疑问形式:Am/Is/Are＋主语＋being＋过去分词？AmIbeingwatchedover?4）特殊疑问句的形式:把特殊疑问词放在一般疑问句前面。Howmanybridgesarebeingbuiltinthevillage?1.Theplan_______________thismonth.

计划本月正在执行。2.Yourcomputer__________________now.现在没人修理你的电脑。3.____thesefields___________thisweek？这周有人在给这些地浇水吗？4.Where____you_______________now？

现在你们在哪里接受面试？isbeingcarriedoutisnotbeingrepairedArebeingwateredarebeinginterviewed3.主动语态变被动语态的原则“三变”例：Theyarebuildingnineparks.原句主语变为by短语宾语变为主语谓语由主动变为被动“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Nineparks______________bythem.Howmanyparks____________?arebeingbuiltarebeingbuilt例：1.Mary_______________(interview)now.2.Look!Thebaby___________________(takecareof)byheraunt.3.Thedisease_____________(study)atpresentbyscientist.4.现在进行时的被动语态基本用法：（1）表示现在正在进行的被动动作。isbeingtakencareofisbeingstudiedisbeinginterviewed（1）表示现在正在进行的被动动作。例：1.今晚将要举办一场晚会。Anparty___________(held)tonight.2.下面将唱一首民歌。A

folk

song___________

(sing)next.

3.据说下周日早上八点他将开飞机去。

It

is

saidthataplane_______________(flow)

by

him

to

America

at

eight

next

Sundaymorning.

isbeingheldis

being

sungisbeing

flown（2）少数及物动词的进行时表示按计划、安排将要承受某个动作。(3)没有进行时的被动语态【练习】判断正误。小王,过来,有你的电话。Xiao

Wang,

come

here.

You

are

being

wantedon

the

phone.Xiao

Wang,

come

here.

You

are

wanted

on

the

phone.

一些表示状态、心理活动、拥有、存在等的动词(和主动语态一样)一般不用进行时被动语态,常用一般现在时被动语态表示此时此刻或目前主语承受谓语动词的动作。

(4)表示被动结构“be

+under/

in等介词+名词”结构可替换进行时被动语态。

is

being

attacked例：1.目前这个城市正受到进攻。The

city

is

under

attack

at

the

moment.

2.桥梁正在建筑中。The

bridge

is

under

construction.

is

being

constructedChoosethesuitableverbform.I’m(working/beingworked)athometodaybecausemyofficeis(painted/beingpainted).Thealarmingreportis(written/beingwritten).Itwillbefinishedsoon.Whatpartofthecityis(attacked/beingattacked)now?Rightnowthedeerare(watched/beingwatcher)overbymanyvolunteers.Whois(hunting/beinghunted)thekangaroos?Wherearethey(hunted/beinghunted)?Itisreportedthatlivingspacesforwildlifeare(reduced/beingreduced)duetothecuttingoftrees.√√√√√√√Activ.

1√ThepassageisaboutLiuTao’sconcernofthewetlandinhishometownInthewetlandofmyhometown,therearemanydifferentkindsofanimals,includingwildbirds,fish,snakes,insectsandsoon.WhenIwasinprimaryschool,Ioftenwenttherewithmyfriendstowatchthebirdsandstudythem.Thatwasaninterestingplaceforallofus.Butthingshavebeguntochangeinrecentyears.Activ.

2Activ.

2Whatishappeningtothesmallbirdsinthewetland?Whatishappeningtothewildducks?Whatishappeningtothefishandsnakes?Question&AnswerLiuTao’sconcernaboutwetlandsinhishometown.Smallbirds__________________(catch)withnets.arebeingcaughtWildducks_______________(sell)atfoodmarkets.arebeingsoldFishandsnakes______________(kill)forfoodinrestaurants.arebeingkilledActiv.

2Whatishappeningtothewetland?Whatdoyouthinkshouldbedonetoprotectthewetland?Thewetland___________________(destroy).Someparts_________________(cover)withnewhouse.Youcanseerubbisheverywhere.Thewetland_________________(pollute)seriouslyeveryday.arebeingdestroyedarebeingcoveredisbeingpollutedQuestion&AnswerProductionIngroups,discussthequestionsbelow.Preparetogiveapresentationofyourideastotheclass.1.Whatdoyouknowisbeingdoneinyourneighbourhoodtoprotectanimalsandplants?2.Whatsuggestionsdoyouhave?UsefulExpressions:...is(are)beingprotected.Itisgoodfor...It'sawonderfulhabitatfor...Itmakesourenvironmentmore...SampleConversationA:Whatisbeingdoneinourneighbourhoodtoprotectanimalsandplants?B:Well,theoldtreesintheparkarebeingprotected.A:Ohyes.Theyarebeingprotectednotonlybecausetheyareveryoldbutalsobecausetheyarethenaturalhabitatforsongbirds.D:Yes,thatwouldcertainlyhelpmaketheaircleanerforthem.C:That'sright.Perhapstheycouldhelpprotectthebirdsbymakingtheroadsaroundtheparkfreefromcars.1.现在进行时的被动语态的基本结构肯定结构be(am/is/are)beingdone否定结构be(am/is/are)+not+beingdone一般疑问结构be(am/is/are)+主语+beingdone特殊疑问结构特殊疑问词+be(am/is/are)+主语+beingdoneSummary（1）表示现在正在进行的被动动作。（2）少数及物动词的进行时表示按计划、安排将要承受某个动作。(3)没有进行时的被动语态(4)表示被动结构“be

+under/

in等介词+名词”结构可替换进行时被动语态。2.现在进行时的被动语态的基本用法deern.鹿(pl.deer)Ananimalwithlonglegs,thateatsgrass,leaves,etc.andcanrunfast.Therearemanytypesofdeer.Examplesentences：Ifwearehunted,manydeerwillbehurteachday.Huntsmenchasedthedeersilently.Newwordsadeerpark

鹿苑aherdofdeer一群鹿kangaroon.袋鼠(pl.-oos)AlargeAustraliananimalwithastrongtailandbacklegs,thatmovesbyjumping.Thefemalecarriesitsyounginapocketofskin(calledapouch)onthefrontofitsbody.Examplesentences：Kidslovestufflikeexploringcavesorkangarooparks.Kangarooattacksarerelativelyrare.Newwordsreducevt.减少Tomakesthlessorsmallerinsize,quantity,price,etc.Examplesentences：Oilisputinmachinerytoreducethefriction.Reducewhatyouneedtodo.Newwordsreducewaste减少浪费,减少废弃物reduceexpenditure减少开支dueadj.dueto

adv.由于；因为Examplesentences：Wedigahole,whichisnoteasy,duetoroots.Thatwasmadeintoanofficeduetoitssmallsize.Newwo