人教版(2023)必修第二册Unit 2 Wildlife Protection-Discovering Useful Structures课件(共27张PPT)

第第页人教版(2023)必修第二册Unit2WildlifeProtection-DiscoveringUsefulStructures课件(共27张PPT)(共27张PPT)

Unit2WildlifeProtection

Period3

DiscoveringUsefulStructures

Whenthebuyingstops,thekillingcantoo.

—WildAid

1.learnabouttheform,meaningandusageofthepresentcontinuouspassivevoice;

2.talkabouthowtoprotectthewildlifeusingthetargetedgrammar;

3.Learntousepresentcontinuouspassivevoicetodescribetheendangeredanimals’conditionsandmeasurestakentohelpthemtoarousetheawarenessofwildlifeprotection.

LearningObjectives:

Whatcanyouseeinthephoto

-Icanseealovelypanda.

-ThezookeeperisattendingYY.

-YYisattendedwellbythezookeeper.

思考：如何说“目前YY很好地被饲养员照顾着”？

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。

现在进行时的构成

1.Wearehaving

anEnglishclass.

2.IamreadingJaneEyrethesedays.

现在进行时的构成：

主语+be(am/is/was/are/were)+doing

Review

1.此时此刻

2.现阶段

被动语态的构成

1.ThebookwaswrittenbyLuXun.

2.Theclassroomsarecleanedbystudentseveryday.

3.ThismathsproblemcanbeworkedoutbylittleTom.

被动语态的构成：

主语+be(am/is/was/are/were)+done

Review

一、观察例句，归纳用法。

1.Alotofantelopesarebeinghuntedillegally.

2.Animalshabitatsarenotbeingdestroyedashumanssearchformoreresources.

3.Ismorelandalsobeingusedforgrowingcrops

4.Howmanyspeciesarebeingdriventoextinction

1.如句(1):现在进行时的被动语态肯定形式为:主语+________________________。

2．如句(2):现在进行时的被动语态否定形式为:主语+_____________________。

3．如句(3):现在进行时的被动语态的一般疑问句式为：______________________________。

4．如句(4):现在进行时的被动语态的特殊疑问句式为：________________________________________。

is/am/arebeingdone

is/am/arenotbeingdone

is/am/are＋主语＋beingdone

疑问词＋is/am/are+主语＋beingdone

现在进行时的被动语态构成

形式结构

肯定式主语＋am/is/are＋beingdone.

否定式主语＋am/is/arenot＋beingdone.

一般疑问式am/is/are＋主语＋beingdone？

特殊疑问式疑问词＋am/is/are＋主语+beingdone？

3.主动语态变被动语态的原则

“三变”

例：Theyarebuildingnineparks.

原句主语by的宾语

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

Nineparks_________________bythem.

arebeingbuilt

①表示说话时正在进行的被动动作,句中常用now,rightnow,atthismoment,atpresent等时间状语。

-Mum,mycomputerisbeingfixed.

-CanIuseyours

②表示现阶段正在进行的被动动作.(说话时不一定在进行)

Anewlibraryisbeingbuiltinourschool.Itwillopennextyear.

③表示一种习惯的被动行为(always,constantly),带有赞扬、羡慕、讨厌等感彩。

Childrenofourneighborsarealwaysbeingpraisedbyourparents.

Africanelephantsarebeinghunted.

Whatisbeingdonetohelp

Whatmeasuresarebeingtakentohelpthem

examples

am/is/arebeingdone

am/is/aredoing

am/is/aredone

现在进行时的被动语态

现在进行时的主动语态

一般现在时的被动语态

Comprehensioncheck

Findmoresentenceswiththesameverbforminthisunit.

(Paragraph2on16)

Theyarebeinghunted,illegally,fortheirvaluablefur.

(Paragraph7on16)

Muchisbeingdonetoprotectwildlife.

…

Choosethesuitableverbform.

I’m(working/beingworked)athometodaybecausemyofficeis(painted/beingpainted).

Thealarmingreportis(written/beingwritten).Itwillbefinishedsoon.

Whatpartofthecityis(attacked/beingattacked)now

Rightnowthedeerare(watched/beingwatcher)overbymanyvolunteers.

Whois(hunting/beinghunted)thekangaroosWherearethey(hunted/beinghunted)

Itisreportedthatlivingspacesforwildlifeare(reduced/beingreduced)duetothecuttingoftrees.

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practice

Haveyouvisitedawetland

HowaboutthewetlandIsitbeautifulOpenbookspage18Ex3andreadtogethertofindwhatisthewetlandlikeinLiutao’seyes.

Inthewetlandofmyhometown,therearemanydifferentkindsofanimals,includingwildbirds,fish,snakes,insectsandsoon.WhenIwasinprimaryschool,Ioftenwenttherewithmyfriendstowatchthebirdsandstudythem.Thatwasaninterestingplaceforallofus.Butthingshavebeguntochange

Practice

Exercises3onP18inthetextbook.

inrecentyears.Smallbirds_______________(catch)withnets.Wildducks_______________(sell)atfoodmarkets.Fishandsnakes_______________(kill)forfoodinrestaurants.Andevenworse,thewetland_________________(destroy).Someparts_______________(cover)withnewhouses.Youcanseerubbisheverywhere.Thewetland_____________(pollute)seriouslyeveryday.Iamveryworiedaboutit.Whatcanwedo

arebeingcaught

arebeingsold

arebeingkilled

isbeingdestroyed

isbeingpolluted

arebeingcovered

3.Whatishappeningtothefishandsnakes

2.Whatishappeningtothewildducks

1.Whatishappeningtothesmallbirdsinthewetland

4.Whatishappeningtothewetland

Smallbirdsarebeingcaughtwithnets.

Wildducksarebeingsoldatfoodmarkets.

Thewetlandarebeingkilledforfoodinrestaurants.

Thewetlandarebeingpollutedseriouslyeveryday.

Thinkandanswer

Readandcompletethepassagewiththepresentcontinuouspassivevoiceoftheverbsinbrackets.

Itmayseemthatprotectingwildlifeissomethingfarfromthelifeofahighschoolstudent,butinfact,alot_____________byyoungpeoplearoundtheworld.InWashingtonState,USA,wolverines(貂熊)_________________byscientistsinanefforttolearnhowtopreservethepopulation.However,ddringthewinter,itisdifficulttoattracttheanimalstocamerashiddeninsnowyforests.Agroupofstudentsheardabouttheproblemandcreatedaspecialdevicewhich______________deepinasnowyforestnow.Theirinvention_____________tosendoutacertainsmellnearthecameras.Theshyanimalsareattractedbythesmellandcomingaroundthecameras.They________________byacgnservationresearcher.

isbeingdone

arebeingstudied

isbeingtested

isbeingused

arebeingobserved

Practice

Readandcompletethepassageaboutwildlifeprotectionwiththecorrectverbformsinbrackets.

Thebalanceofnatureonourplanet________________(threaten)asalargenumberofspecies______________(drive)toextinction.Somescientistspredictthathalfofallourplantsandanimalswillbeextinctby2100.Thequestioniswhythesespecies___________________(endanger).Oneofthemainreasonsislossofhabitat.Animalhabitats___________________(destroy)ashumanssearchformorenaturalresourcestoconsume(消费).Moreland_________________(alsouse)forgrowingcropsorkeepinglivestock(家畜).Inaddition,massiveamountsofwaste_________________(produce)byhumans,whicharepollutinganimalhabitats.

isbeingthreatened

isbeingdriven

arebeingendangered

arebeingdestroyed

arealsobeingused

isbeingproduced

Practice

Harmfulchemicals_________(create)byhumanactivitiesarebeingre