高中英语《Unit-4-Wildlife-Protection》教案-新人教版必修2

PAGEPAGE4河北省邯郸四中高中英语《Unit4WildlifeProtection》教案新人教版必修2TeachingdifficultpointsHowtohelpstudentsmasterthepronunciationwithinlimitedtime.Howtomaketheusagesclear.ProceduresStep1.Lead-inShowsomepicturesofsomeendangeredanimalsandletthestudentsnamethem.(polarbear,miludeer,rhino,tiger,crocodile,leopard,koala,panda,dolphin,giraffe…)Questions:1.Doyouoftenseetheseanimals?2.Whatproblemsaresomeanimalsfacingnowadays?Why?Step2.WarmingupCooperativelearning.Discussthequestionswiththepartners.1.Whyaretheanimalsindanger?(1.Don’thaveenoughfood;2.Beinghuntedandkilled;3.Thebadenvironment;)2.Whatmeasuresshouldbetakentoprotecttheendangeredanimals?((1)Treattheanimalsasourfriends;(2)Weshouldn’tkillthemfreely.(3)Weshouldprotecttheenvironmentaroundus.(4)Weshouldcollectmoneytoprotectanimals.)Step3.ReadingTask1:Scanning1.Whatthreeplaceshasshebeento?2.Whatproblemsfacetheanimals?3.Whatendangeredanimalsarethey?Task2:Skimming1.Readthepassagecarefullyandfillinthechartonpage27.2.Answerthequestions.(P27)Task3:Listenandreadaloud.Step4SummaryFillintheblanks.HowDaisyLearntoHelpWildlifeTibet:(1)___________isusedtomakesweater.(2)Antelopesarekilledfor________;(3)Everyyearover___________antelopesarekilled.Zimbabwe;(1)________usedtohunttheelephants.(2)Nowfarmers__________them.Rainforest:(1)A________insectaffectsmosquitoes.(2)No______,no________andno_________.Step5Languagepointsprotectionn.保护protectvt.~sth.from/against…保护……避免……He’swearingthesunglassestoprotecthiseyesfrom/againstthestrongsunshine.asaresult结果A句.Asaresult,B句.Igotuplatethismorning.Asaresult,Icouldcatchthefirstbus.asaresultof=becauseof为介词词组，不能引导句子。Hewaslateasaresultofgettinguplate.resultin导致，引起resultfrom起因于；由。。。引起dieout灭亡；逐渐消失dieaway/diedown消失，变小,dieof/from死于,dieoff一个接一个死去Miludeeraredyingout.lossn.Hissacrificeisalossofourcountry.ataloss不知所措withoutaloss毫无保留makeupaloss补偿损失ThelifeoftheMiludeerinBritain:Howtheyreturned:Presentsituation:Valueofthecooperation:Task3:Readthepassageandunderlinetheimportantwordsandexpressions.Step5SummaryandhomeworkRevisetheusefulwordsandexpressioninthisunit.PeriodFourListeningStep1RevisionFillintheblanks(Ex.2P64)Step2Listening(P62)Task1:Talkaboutthepictures.IfyouwanttowritealettertotheteenagermagazineAnimals,Whatproblemsofanimalswouldyouliketotellthewriter?Task2:Listentothethreelettersandtrytofindtheworriesfromeachletter.Task3;Listenagainandfillinthechart.Step3Listeningtask(P66)Task1:Introduction:HuXiaoisinterviewingAliceJones,avolunteerfortheInternationalBirdRescuesResearchCenter,aboutherwork.Lookatthepicturesandguesswhatthelisteningwilltalkabout.Task2:Listentothetapeandgetthemainidea.ListentoPartAagainandwritedownthekeyinformation.WhatisthemostdifficultpartoftheworkaccordingtoAlice?Task3;ListentoPartAagainandfillintheblanks.(Ex3)Task4:ListentoPartBtwiceandwritedownthetwostepstheIBRRCusuallytakestohelpthosebirds.Step1:Step2:Step4SummaryandhomeworkFinishtheexercisesonPage28.PeriodFiveLearningaboutlanguageTeachingaims(1)Letthestudentslearntheusagesofusefulwordsandexpressions.(2)LetstudentsgetusedtoPassiveVoiceindifferenttenses2.TeachingdifficultpointHowtohelpstudentsmastertheusagesofpassivevoiceindifferenttenses3.ProcedureStep1RevisionCheckthehomework.Step2GrammarIntroducePassiveVoice语语法：被动语态

一、主动语态与被动语态的概念：

英语动词的语态有两种：⑴主动语态：表示主语是动作的执行者

⑵被动语态：表示主语是动作的承受者(常常没在有必要指出动作的执行者情况下使用)

例：TheyspeakEnglish.（主动语态）

主谓宾

Englishisspokenbythem.（被动语态）

主谓介词短语

注：☆及物动词有被动语态，不及物动词必须带有介词才可以有被动语态。

例：⑴Welistentotheteachercarefullyinclass.

主谓宾

→Theteacherislistenedtobyuscarefullyinclass.

主谓介词短语

⑵Ｗelaughedathim.

→Hewaslaughedatbyus.

二、被动语态的结构与用法：

㈠结构：be+done(过去分词)

被动语态中的be为助动词，无意义。be可能是am,is,are也可能是was,were或原形be。

注：☆被动语态的时态是由be的时态决定的，be是什么时态，全句就是什么时态，be后面的过去分词不变。

㈡用法：

例：①Ｈistoryismadebythepeople.(一般现在时)

②ＴhecarsweremadeinTianjingin1995.(一般过去时)

③Thetreewillbecutdownnextyear.(一般将来时)

④Ｔheroommustbekeptclean.（含有情态动词的被动语态）

⑤Thedoorisbeingopened.（现在进行时）

⑥Thefilmhasbeenseenbyme.（现在完成时）

三、被动语态的各种句型：

１、Ｔhesongislikedbyyoungpeople.(肯定句)

２、Ｔhesongisn’tlikedbyyoungpeople（否定句）

３、Isthesonglikedbyyoungpeople?（一般疑问句）

４、Whoisthesonglikedby?=Bywhomisthesongliked?（特殊疑问句）

四、主动语态改被动语态的方法：

方法分为三步：⑴把原句中的宾语改成主语

⑵动词改为变动形式bedone(同时注意时态)

⑶原来的主语如果需要的话放在介词by后面，以指明做的人或物，如果没有必要则省去

例：Themankilledatiger.

→Atigerwaskilledbytheman.(改的过程中要注意时态和语态两个方面)

五、特殊句型的被动语态：

⑴含有使役动词（make/let/have）或感官动词（hear,see,listento,lookat,find,watch,feel等）的句子，在主动语态中这些词后常跟不带to的动词不定式，但是在改成被动语态时，则一定要把省去的to再加上去，另外help这一个词在主动语态中后面的动词不定式可以带to,也可不带to,但在被动语态中也必须把to加上去。

例：①Motheroftenmakesmedosomehousework.

→Iamoftenmadetodosomehouseworkbymother.

②Wesawhimrunintotheclassroom.

→Hewasseentorunintotheclassroombyus.

⑵teach,give,pass,show,buy,tell等动词常常带有两个宾语（双宾语：直接宾语和间接宾语），改为被动语态时，两个宾语可以选其中任一个作主语。如果直接宾语被提前作主语，那么间接宾语（一般是人）前要加相应的介词to/for。

例：①Ｓhegavemeapen.=Shegaveapentome.

→Iwasgivenapenbyher.

→Apenwasgiventomebyher.

②Myfatherboughtmeanewbike.=Myfatherboughtanewbikeforme.

→Iwasboughtanewbikebymyfather.

→Anewbikewasboughtformebymyfather.

⑶由不及物动词（vi）+介词/副词＋宾语的句子改成被动语态时，介词或副词不能丢掉。(前面已举过两例)

例：①Ｗeshouldspeaktooldpeoplepolitely.

→Oldpeopleshouldbespokentopolitely(byus).

②Hetookawaythebox..

→Theboxwastakenawaybyhim.

⑷含有宾语补足语的句子改为变动语态。（宾补放在原来位置不变）

例：①WecallhimXiaoMa.

主谓宾宾补

→ＨeiscalledXiaoMabyus.

②Hefoundthebookveryinteresting.

→Thebookwasfoundveryinterestingbyhim.

六、没有被动语态的动词：

1.没有被动语态的词，表示状态或特征的及物动词如cost,fit,have,suit等没有被动形式，另外，诸如happen=takeplace,breakout(爆发)，breakdown(坏了)等不及物动词或短语以及诸如resultfrom(缘于)，belongto,consistof等只用主动语态，而不用被动语态

２不及物动词或动词短语无被动语态:appear,die,disappear,end(vi.结束),fail,last,lie,remain,sit,spread（传播）,stand,cometrue,fallasleep,...

３.大多数系动词：be,feel(摸起来)，sound(听起来)，look(看起来)，smell(闻起来)taste（尝起来）等词无被动语态，它们的主动形式表示被动意义。

例：①Ｔheskirtfeelsverysoft.这件裙子摸起来很柔软。

②Manychangeshavehappenedinourhometown.

③Thefilmlastedfor3hours.Step4.Grammarpractice1.I’llbegoingtoworkonfootwhilemybicycle_________(repair)2.Theradarsets__________(run)foralongtimewithoutanytrouble.3.Whiletheicebox___________(examine),alotofdefectswerefound.4.Doyouremember___________(introduce)toDr.Henryduringyourlastvisit?5.Thebookifworthyof________(read)6.Idislike__________(look)atwhiletrytolearnskiing.7.“Doyouhaveanyclothes________(wash)today?”mymotherasked.8.Excuseme,butitistimetohaveyourtemperature_______(take).9.Letteachers’words__________(remember0.10.Hehascometohavehisbloodpressure_________(check).Step