高中英語新人教版必修第二冊UNIT2WILDLIFEPROTECTIONDISCOVERINGUSEFULSTRUCTURES課件-1

Unit2

WildlifeProtectionDiscoveringUsefulStructures現(xiàn)在進(jìn)行時的被動語態(tài)【情境探究】isbeingheldisbeingbuilt【要義詳析】一、現(xiàn)在進(jìn)行時的被動語態(tài)的基本結(jié)構(gòu)*Theplanisbeingdiscussedatthemeetingnow.現(xiàn)在這個計(jì)劃正在討論過程中。Anewlawisbeingmadetopreventendangeredanimalsfromextinction. 詞匯復(fù)現(xiàn)

為了阻止瀕危動物的滅絕新的法律正在制定中。*Workersarecuttingdownsometreesinthepark.→Sometreesarebeingcutdownbyworkersinthepark.(被動語態(tài))→Wherearesometreesbeingcutdownbyworkers?(特殊疑問句)【巧學(xué)助記】主動語態(tài)變被動語態(tài)的原則“三變”原則:原主變?yōu)閎y短語,原賓變?yōu)楝F(xiàn)主語;謂語主動變被動。“三不變”原則:原句意思不變;原句時態(tài)不變;原句主謂賓以外成分不變。

【即學(xué)活用】語法填空(1)Thegrammarwhich______________(learn)nowiseasytomaster.

(2)Someanimals_________________(protect)wellenoughnow.

(3)Thesportsmeeting___________(hold)inourschoolatpresent.

isbeinglearnedarebeingprotectedisbeingheld(4)(2018·天津高考)Mywashingmachine_______________(repair)thisweek,soIhavetowashmyclothesbyhand.

isbeingrepaired二、現(xiàn)在進(jìn)行時的被動語態(tài)的基本用法1.表示此刻正在進(jìn)行的被動動作,常與now,look等詞連用。*Look!Thebabyisbeingtakencareofbyheraunt.瞧!那個嬰兒正由她的姑姑照料著。2.表示現(xiàn)階段正在進(jìn)行的被動動作,但此動作不一定在此時此刻發(fā)生。*ManyspeechesaboutChinesetraditionalculturearebeingheldthesedays.這一陣子許多有關(guān)中國傳統(tǒng)文化的講座正在舉行。3.表示按計(jì)劃主語將要承受的某個動作。*AChristmaspartyis

beingheldtonight.今晚將要舉行一場圣誕晚會。4.表示經(jīng)常的被動行為,常和always,often,constantly等詞連用(表示某種感情色彩)。*Tomisalwaysbeingpraisedbytheteacher.湯姆總是受到老師的表揚(yáng)。arebeingraisedisbeingcriticized(3)Themiludeer_________________(study)attheresearchcentrethesedays.

(4)Amanhasbeenarrestedand_________________(question)now.

is/arebeingstudiedisbeingquestioned三、使用現(xiàn)在進(jìn)行時的被動語態(tài)應(yīng)注意的問題1.在現(xiàn)在進(jìn)行時的被動語態(tài)中be(am/is/are)為第一助動詞,being為第二助動詞,缺一不可,且位置不可互換。*Butnowthatinformationisbeingspreadandmonitoredindifferentways,researchersarediscoveringnewrules.但是既然信息正在以不同的方式被擴(kuò)展與監(jiān)控,研究者正在發(fā)現(xiàn)新的規(guī)則。2.像takecareof,lookafter,talkabout,thinkof等動詞與介詞構(gòu)成的短語用于現(xiàn)在進(jìn)行時的被動語態(tài)時,其中的介詞不可省略。*Thewaystostopillegallyhunting

arebeingtalkedabout.詞匯復(fù)現(xiàn)

阻止非法捕獵的方法正在研討中。3.“be(am/is/are)+under/in+n.