Unit 2 Wildlife Protection Discovering useful structures 课件 【教材精讲精研】高中英语人教版2019 必修第二册

Unit2WildlifeProtectionDiscoveringusefulstructures123LearningObjectivesTolearntoknowthestructureofpresentcontinuouspassivevoice.Tolearntousepresentcontinuouspassivevoicetodescribetheendangeredanimals’conditionsandmeasurestakentohelpthem.Tolearntousepresentcontinuouspassivevoicetodescribetheongoingevents.Step1ReviewHaveyoustillrememberedthestructureofpresentcontinuoustense?Haveyoustillrememberedtheuseofpresentcontinuoustense?presentcontinuoustenseam/is/aredoing…Wearedoingmanythingstoprotecttheanimals.WeareseeingtheTibetanantelopesnextweek.WeareobservingtheTibetanantelopesthesedays.1.Wearedoingmanythingstoprotecttheanimals.2.WeareseeingtheTibetanantelopesnextweek.3.WeareobservingtheTibetanantelopesthesedays.somethinghasnotstoppedsomethingwilldoinplansomethingpeopledoinaperiodoftimetheuseofpresentcontinuoustenseTranslatethefollowingsentences.1.我们现在正在办公室开会。Wearehavingameetingintheofficenow.2.这些日子我一直在思考这个问题。I’mthinkingofthequestionthesedays.3.下周二我的朋友将在机场为我送行。MyfriendisseeingmeoffnextTuesday.Step2LeadinEnjoythesong:Lovetobelovedbyyou

Baby,tellmehowcanItellyouThatI________youmorethanlifeShowmehowcanIshowyouThatI'm_______byyourlightWhenyoutouchmeIcantouchyou

TofindoutthedreamistrueI_______tobelovedIneedtobe_______Ilovetobe________byyouloveblindedlovelovedlovedLoveToBeLovedByYou是一首旋律优美的英文歌曲，演唱者是美国流行歌手马克·特伦茨（MarcTerenzi）。2005年，Marc与德国歌手莎拉·寇娜（SarahConnor）结婚时，将这首歌作为爱的礼物献给妻子。主动语态被动语态Fillintheblankwiththelyrics.WarmingupWhataretheydoingnow?Ahouseisbeingbuiltbytheworkers.Theworkersarebuildingahouse.am/is/are+being+done（动词的过去分词）Step3ExploretherulesUnderlinethepresentcontinuouspassivevoiceinthesentencesanddiscussitsfunction.Africanelephantsarebeinghunted.Whatisbeingdonetohelpthem?Whatmeasuresarebeingtakentohelpthem?Structure：am/is/are+being+done(pastparticiple)Findmoresentenceswiththesameverbforminthisunit.Theyarebeinghunted,illegally,fortheirvaluablefur.Muchisbeingdonetoprotectwildlife.theuseofpresentcontinuouspassivevoicePresentcontinuouspassivevoiceisusedinthesameconditionswherepresentcontinuoustenseisused.Butitexpressapassivevoice.Theyarebeinghunted,illegally,fortheirvaluablefur.Peoplearehuntingthem,illegally,fortheirvaluablefur.Thetwosentencesaretellingthesamethingbutintwodifferentways.PresentContinuousPassiveVoice现在进行时的被动语态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。e.g.Ahouseisbeingbuiltbytheworkers.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。常与now,rightnow,atpresent,atthemoment等时间状语连用。isbeingtakencareofisbeingstudiedisbeinginterviewed（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。例：1.今晚将要举办一场晚会。Aparty___________(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(3)不用进行时的被动语态一些表示状态、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。

【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.

(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

constructedStep4PracticePractice1.Choosethesuitableverbformstocompletethesentences.1.I'm(working/beingworked)athometodaybecausemyofficeis(painted/beingpainted).2.Thealarmingreportis(written/beingwritten).Itwillbefinishedsoon.3.Whatpartofthecityis(attacked/beingattacked)now?4.Rightnow,thedeerare(watched/beingwatched)overbymanyvolunteers.5.Whois(hunting/beinghunted)thekangaroos?Wherearethey(hunted/beinghunted)?6.

Itisreportedthatlivingspacesforwildifeare(reduced/beingreduced)duetothecuttingoftrees.n.

鹿n.

袋鼠vt.

减少1.Wearedoingmanythingstoprotecttheanimals.Manythingsarebeingdonetoprotecttheanimals.2.Changethesentencesintotheirpassivevoice.2.WeareseeingtheTibetanantelopesnextweek.TheTibetanantelopesarebeingseennextweek.3.WeareobservingtheTibetanantelopesthesedays.TheTibetanantelopesarebeingobservedthesedays.Haveyouvisitedawetland?Whatcanyouseeinthewetland?Whyshouldwesetupthewetland?3.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.Iamveryworiedaboutit.Whatcanwedo?arebeingcaughtarebeingsoldarebeingkilledisbeingdestroyedisbeingpollutedarebeingcoveredn.

昆虫n.

网Step5Production4.Ingroups,discussthequestionsbelow.Preparetogiveapresentationofyourideastotheclass.

Whatdoyouknowisbeingdoneinyour

neighbourhoodtoprotectanimalsandplants?

Whatsuggestionsdoyouhave?UsefulExpressions:...is(are)beingprotected.Itisgoodfor...It'sawonderfulhabitatfor...Itmakesourenvironmentmore...n.

临近的地方；街区SampleConversationA:Whatisbeingdoneinourneighbourhoodtoprotectanimalsandplants?B:Well,theoldtreesintheparkarebeingprotected.A:Ohyes.Theyarebeingprotectednotonlybecausetheyareveryoldbutalsobecausetheyarethenatu