Unit2WildlifeprotectionDiscoveringusefulstructures被動(dòng)語態(tài)課件-高中英語人教版

Unit2WildlifeProtection

DiscoveringUsefulStructures

ThePresentContinuousPassiveVoiceThepassivevoice

被動(dòng)語態(tài)二、意義：被動(dòng)語態(tài)表示主語是動(dòng)作的承受者。

一、結(jié)構(gòu)：be+doneLead-in:ReviewThetreewasplantedbyus.二、意義：表示說話時(shí)或現(xiàn)階段某個(gè)動(dòng)作正在進(jìn)行。

一、結(jié)構(gòu)：主語+be(am/is/was/are/were)+doingThepresentcontinuoustense現(xiàn)在進(jìn)行時(shí)

WearehavinganEnglishclass.

Presentation一.Observetheexamplesentencesandsummarizethestructuresofthepresentcontinuouspassivevoice.1.Alotofantelopesarebeinghuntedillegally.2.Animalshabitatsarenotbeingdestroyedashumanssearchformoreresources.3.Ismorelandalsobeingusedforgrowingcrops?4.Howmanyspeciesarebeingdriventoextinction?1.如句(1):現(xiàn)在進(jìn)行時(shí)的被動(dòng)語態(tài)肯定形式為:主語+________________________。2．如句(2):現(xiàn)在進(jìn)行時(shí)的被動(dòng)語態(tài)否定形式為:主語+_____________________。3．如句(3):現(xiàn)在進(jìn)行時(shí)的被動(dòng)語態(tài)的一般疑問句式為：______________________________。4．如句(4):現(xiàn)在進(jìn)行時(shí)的被動(dòng)語態(tài)的特殊疑問句式為：________________________________________。is/am/arebeingdoneis/am/arenotbeingdoneis/am/are＋主語＋beingdone疑問詞＋is/am/are+主語＋beingdone(3)Whatmeasuresarebeingtakentohelpthem?(2)Whatisbeingdonetohelpthem?(1)Africanelephantsarebeinghunted.二、Underlinethepresentcontinuouspassivevoiceinthesentencesanddiscussthemeaningofthesentences.（Page18）非洲大象正在被獵殺?，F(xiàn)在可以做些什么來幫助它們呢?現(xiàn)在可以采取哪些措施來幫助它們呢?2.現(xiàn)在進(jìn)行時(shí)的被動(dòng)語態(tài)的意義1.定義

主語是動(dòng)作的承受者,表示說話時(shí)或現(xiàn)階段某個(gè)被動(dòng)的動(dòng)作正在進(jìn)行。2.現(xiàn)在進(jìn)行時(shí)的被動(dòng)語態(tài)的意義①表示說話時(shí)正在進(jìn)行的被動(dòng)動(dòng)作,句中常用now,rightnow,atthismoment,atpresent等時(shí)間狀語。②表示現(xiàn)階段正在進(jìn)行的被動(dòng)動(dòng)作.(說話時(shí)不一定在進(jìn)行)

Anewlibraryisbeingbuiltinourschool.Itwillopennextyear.1.定義

主語是動(dòng)作的承受者,表示說話時(shí)或現(xiàn)階段某個(gè)被動(dòng)的動(dòng)作正在進(jìn)行。Summary：thepresentcontinuouspassivevoice①

表示說話時(shí)正在進(jìn)行的被動(dòng)動(dòng)作，句中常有now,rightnow,atthemoment,atpresent

等時(shí)間狀語。②

表示現(xiàn)階段正被進(jìn)行的動(dòng)作，但此動(dòng)作在此時(shí)此刻不一定正在發(fā)生。形式結(jié)構(gòu)肯定式主語＋am/is/are＋beingdone.否定式主語＋am/is/arenot＋beingdone.一般疑問式am/is/are＋主語＋beingdone？特殊疑問式疑問詞＋am/is/are＋主語+beingdone？Summaryam/is/arebeingdoneam/is/aredoingam/is/aredone現(xiàn)在進(jìn)行時(shí)的被動(dòng)語態(tài)現(xiàn)在進(jìn)行時(shí)的主動(dòng)語態(tài)一般現(xiàn)在時(shí)的被動(dòng)語態(tài)1.Determinethetensesandvoicesofthefollowingconstructionsandconnectthem.Practice1.Smallbirds__________________(catch)withnets.arebeingcaught2.Wildducks_______________(sell)atfoodmarkets.arebeingsold3.Fishandsnakes______________(kill)forfoodinrestaurants.arebeingkilled1.Fillintheblankswiththecorrectverbformsinbrackets.Thebalanceofnatureonourplanet________________(threaten)asalargenumberofspecies______________(drive)toextinction.Somescientistspredictthathalfofallourplantsandanimalswillbeextinctby2100.Thequestioniswhythesespecies___________________(endanger).Oneofthemainreasonsislossofhabitat.Animalhabitats___________________(destroy)ashumanssearchformorenaturalresourcestoconsume(消費(fèi)).Moreland_________________(alsouse)forgrowingcropsorkeepinglivestock(家畜).Inaddition,massiveamountsofwaste_________________(produce)byhumans,whicharepollutinganimalhabitats.isbeingthreatenedisbeingdrivenarebeingendangeredarebeingdestroyedarealsobeingusedisbeingproducedExercises3onP18inthetextbook.LiuTaowouldliketoexpresshisconcernoverthewetlandinhishometown.Helphimfinishthepassagewiththepresentcontinuouspassivevoiceoftheverbsinbrackets.ProductionInthewetlandofmyhometown,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