人教版2019 必修第二冊Unit 2 Wildlife Protection Discovering useful structures 現(xiàn)在進行時的被動語態(tài)課件

UNIT2WILDLIFEPROTECTIONThePresentContinuousPassiveVoice現(xiàn)在進行時的被動語態(tài)Tolearntoknowthestructureofpresentcontinuouspassivevoice.Tolearntousepresentcontinuouspassivevoicetodescribetheongoingevents.Tolearntousepresentcontinuouspassivevoicetodescribetheendangeredanimals’conditionsandmeasurestakentohelpthem.Haveyoustillrememberedthestructureofpresentcontinuoustense?Haveyoustillrememberedtheuseofpresentcontinuoustense?結(jié)構(gòu)：am/is/are+

doing1.

Look!Thesingerissingingabeautifulsong.一、presentcontinuoustense

現(xiàn)在進行時此時此刻正在進行的動作2.Wearehavingameetingintheofficenow.1.

WeareobservingtheTibetanantelopesthesedays.表示現(xiàn)階段在做的動作結(jié)構(gòu)：am/is/are+

doing2.I’mthinkingofthequestionthesedays.1.

WeareseeingtheTibetanantelopesnextweek.表示即將發(fā)生的動作結(jié)構(gòu)：am/is/are+

doing2.MyfriendisseeingmeoffnextTuesday.結(jié)構(gòu)：be+done英語動詞有兩種語態(tài)：

主動語態(tài)

(theactivevoice)

被動語態(tài)

(thepassivevoice)thepassivevoice

被動語態(tài)A.主動語態(tài)表示主語是動作的執(zhí)行者。Weplantedthetree.B.

被動語態(tài)表示主語是動作的承受者。

Thetreewasplantedbyus.1.定義

表示“某人/事此時此刻正在被…”，主語是動作的承受者,表示說話時或現(xiàn)階段某個被動的動作正在進行。presentcontinuouspassivevoice

現(xiàn)在進行時的被動語態(tài)Theyarebeinghunted,illegally,fortheirvaluablefur.結(jié)構(gòu)：be(is/am/are)+being+doneUnderlinethepresentcontinuouspassivevoiceinthesentencesanddiscussitsfunction.Africanelephantsarebeinghunted.Whatisbeingdonetohelpthem?Whatmeasuresarebeingtakentohelpthem?

謂語變被動（時態(tài)不變）

be+being+done+bySomeoneishuntingAfricanelephant.bysomeone.Africanelephantisbeinghunted主語謂語賓語賓語2.主動語態(tài)變被動語態(tài)的原則(1)肯定形式：主語

+

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

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

＋

主語

＋

being

＋

done？AmIbeingwatchedover?(4)特殊疑問句形式：特殊疑問詞

+

be(am/is/are)

+

主語

+

being

+

done？基本結(jié)構(gòu)When

isthewallbeingpainted

?1.Maryisbeinginterviewed

now.2.Look!Thebabyisbeingtakencareof

byheraunt.4.基本用法：①

表示說話時正在進行的被動動作，句中常有now,rightnow,atthemoment,atpresent

等時間狀語。②

表示現(xiàn)階段正在進行的被動動作。(說話時不一定在進行)Theproblemoffoodsafetyisbeingstudied

byscientistsatpresent.③表示一種經(jīng)常性的被動行為,常與always,constantly,frequently

等詞連用,往往帶有贊揚、羨慕、埋怨、討厭等感情色彩。Totheteacher'sanger,thesamemistakesarealwaysbeingmadebyhisstudents.④

現(xiàn)在進行時的被動語態(tài)也可以表示將來。Apartyisbeingheldtonight.今晚將要舉行一場晚會?，F(xiàn)在進行時的被動語態(tài)有時可表示按計劃或安排將要進行的一個被動動作(此種用法僅限于少數(shù)及物動詞,如:hold,take等)。Thebookisbeingbelongedtohim.×Thebookbelongstohim.√⑤不及物動詞(短語)、非延續(xù)性動詞、表示存在意義/所屬關(guān)系/靜態(tài)特征的動詞以及系動詞不用于現(xiàn)在進行時的被動語態(tài)。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