人教版2019 必修第二册Unit 2 Wildlife Protection Discovering useful structures 现在进行时的被动语态课件

UNIT2WILDLIFEPROTECTIONThePresentContinuousPassiveVoice现在进行时的被动语态Tolearntoknowthestructureofpresentcontinuouspassivevoice.Tolearntousepresentcontinuouspassivevoicetodescribetheongoingevents.Tolearntousepresentcontinuouspassivevoicetodescribetheendangeredanimals’conditionsandmeasurestakentohelpthem.Haveyoustillrememberedthestructureofpresentcontinuoustense?Haveyoustillrememberedtheuseofpresentcontinuoustense?结构：am/is/are+

doing1.

Look!Thesingerissingingabeautifulsong.一、presentcontinuoustense

现在进行时此时此刻正在进行的动作2.Wearehavingameetingintheofficenow.1.

WeareobservingtheTibetanantelopesthesedays.表示现阶段在做的动作结构：am/is/are+

doing2.I’mthinkingofthequestionthesedays.1.

WeareseeingtheTibetanantelopesnextweek.表示即将发生的动作结构：am/is/are+

doing2.MyfriendisseeingmeoffnextTuesday.结构：be+done英语动词有两种语态：

主动语态

(theactivevoice)

被动语态

(thepassivevoice)thepassivevoice

被动语态A.主动语态表示主语是动作的执行者。Weplantedthetree.B.

被动语态表示主语是动作的承受者。

Thetreewasplantedbyus.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。presentcontinuouspassivevoice

现在进行时的被动语态Theyarebeinghunted,illegally,fortheirvaluablefur.结构：be(is/am/are)+being+doneUnderlinethepresentcontinuouspassivevoiceinthesentencesanddiscussitsfunction.Africanelephantsarebeinghunted.Whatisbeingdonetohelpthem?Whatmeasuresarebeingtakentohelpthem?

谓语变被动（时态不变）

be+being+done+bySomeoneishuntingAfricanelephant.bysomeone.Africanelephantisbeinghunted主语谓语宾语宾语2.主动语态变被动语态的原则(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？基本结构When

isthewallbeingpainted

?1.Maryisbeinginterviewed

now.2.Look!Thebabyisbeingtakencareof

byheraunt.4.基本用法：①

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。②

表示现阶段正在进行的被动动作。(说话时不一定在进行)Theproblemoffoodsafetyisbeingstudied

byscientistsatpresent.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。Totheteacher'sanger,thesamemistakesarealwaysbeingmadebyhisstudents.④

现在进行时的被动语态也可以表示将来。Apartyisbeingheldtonight.今晚将要举行一场晚会。现在进行时的被动语态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)。Thebookisbeingbelongedtohim.×Thebookbelongstohim.√⑤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。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.It’sreportedthatlivingspacesforwildlifeare(reduced/beingreduced)duetothecuttingoftrees.LiuTaowouldliketoexpresshisconcernoverthewetlandinhishometown.Helphimfinishthepassagewiththepresentcontinuouspassivevoiceoftheverbsinbrackets.Inthewetlandofmyhometown,therearemanydifferentkindsofanimals,includingwildbirds,fish,snakes,insectsandsoon.WhenIwasinprimaryschool,Ioftenwenttherewithmyfriendstowatchthebirdsandstudythem.Thatwasaninterestingplaceforallofus.Butthingshavebeguntochangeinrecentyears.Smallbirds______________(catch)withnets.Wildducks_____________(sell)atfoodmarkets.Fishandsnakes_____________(kill)forfoodinrestaurants.Andevenworse,thewetland_______________(destroy).Someparts______________(cover)withnewhouses.Youcanseerubbisheverywh