非谓语动词(The-Past-Participle-(3)-as-the-Adverbial)——姜

寻甸一中集体备课教案（2014—2015学年上学期）年级：高二学科：英语周次：第四周授课时间：2014年9月21日至9月26日课题：ThePastParticiple(3)astheAdverbial（第3课时）主备教师：姜艳芬审核教师（组长）：姜艳芬寻甸一中教研室制ThePastParticiple(3)astheAdverbialByjiangyanfen一．Teachingaims:1.EnablestudentstograspthePastParticipleastheAdverbial2.TellthePresentParticiplefromthePastParticiple.3.Developstudents‘cooperationintheirdailystudyandself-studyability.二．Teachingkeypointsanddifficultpoints1.HowtohelpstudentslearnmoreaboutthePastParticipleastheAdverbialandputwhattheyhavelearntintopractice.2.HowtoleadstudentstolearnthespecialrulesofthePastParticipleastheAdverbial三．TeachingproceduresStep1:Greetingsasusual.Step2:ReviewwhathavelearntaboutthePastParticipleastheObjectComplementandthePastParticipleastheAttributeandPredicativeStep3:Lead-in.(引)★过去分词作状语，一是表被动的动作，二是表动作已经完成。一般能作时间、原因、条件、伴随、让步和方式状语。如：1.表示原因，相当于由as,since,或because引导的原因状语从句Caughtinaheavyrain(Becausehewascaughtinaheavyrain),hewasallwet.因为淋了一场大雨，所以他全身湿透了。Greatlytouchedbytheteacher’swords（Becausetheboywasgreatlytouchedbyhisteacher’swords）,hedidalotofthingstohelphisclassmates.2.表示条件,相当于if,unless引导的条件状语从句Givenmoretime(Ifweweregivenmoretime),wecoulddoitmuchbetter.Comparedwithyou(Ifwearecomparedwithyou),westillhavealongwaytogo.3.表时间,相当于when,while,until等引导的时间状语从句等.Whenitisseenfromthehill（Seenfromthehill）,theparklooksverybeautiful.Don’tspeakuntilyouarespokento（Untilspokento）.4.表让步，相当于though,although，evenif/though等引导的让步状语从句Thoughwarnedofthestorm（Thoughtheyhadbeenwarnedofthestorm）,thefarmerswerestillworkinginthefields.Evenifinvited(EvenifIaminvited),Iwillnottakepartintheparty.5.表方式、伴随状语，相当于一个并列句。Theteacherenteredtheclassroom,followedbyagroupofstudents（andhewasfollowedbyagroupofstudents.）Theteacherstoodthere,surroundedbythestudents.(andwassurroundedbythestudents.)★Sumup:1.过去分词在句子中可以作时间状语、原因状语、伴随状语、条件状语和让步状语等。2.过去分词作状语表示被动或完成的动作,相当一个状语从句。3.过去分词作状语时其逻辑主语与主句的主语要保持一致。否则分词短语就要有自己的逻辑主语,这种结构称为独立主格结构.e.g.:Alloursavingsgone,westartedlookingforjobs.Herushedintotheroom,hisfacecoveredwithsweat.4.位置：过去分词作状语，可以放在主句的前面或者后面，用逗号将二者隔开。★重难点辨析（一）：主语一致Seeingfromthehill,youwillfindthecitylookslikeabiggarden.Seenfromthehill,thecitylookslikeabiggarden.★重难点辨析（二）：不表被动的特殊情况1．有些过去分词因来源于系表结构，作状语时不表被动而表主语的状态,如：lost(迷路)；seated(坐);hidden(躲);lost/absorbedin(沉溺于/专注于);born(出身于);dressedin(穿着);devotedto(全神贯注于);facedwith(面对)等2．由某些动词后面加-ed转化来的形容词也具有此用法。如：frightened,satisfied,tiredof,disappointed等。Lost/Absorbedindeepthought,hedidn'thearthesound.Surprisedatwhathadhappened,Tomdidn’tknowwhattodo.3.过去分词与现在分词作状语的区别：注意：选择现在分词还是过去分词作状语，关键看主句的主语。如分词的动作是主句的主语发出，分词就选用现在分词，反之就用过去分词。例如：Usedforalongtime,thebooklooksold.Usingthebook,Ifindituseful.总之，现在分词表主动、进行；过去分词表被动、完成。Step4:Severalminutesforthemtorevisewhatwehavelearntinthisclassandaskifanyquestion.Then,finish10relatedexercisesontheircoachbook.(动)Step5:Presentation.(展)Chooseanumberfromeachgrouprandomlytowritetheiranswersontheblackboard.Step6:Evaluatetheirworkandexplainwhennecessary.(评)Step7:Atest.(考)1)Faced(face)withadifficultsituation,Arnolddecidedtoaskhisbossforadvice.2)Written（write）inahurry,thisarticlewasnotsogood!3)Whencompared（compare）withthesizeofthewholeearth,thebiggestoceandoesn’tseembigatall.4)Seen(see)fromthetopofthehill,thecitylooksbeautifultous.5)Given(give)time,he’llmakeafirstclasstennisplayer.6)Lost(lose)inthought,healmostranintothecarinfrontofhim.四．BlackboardwritingdesignKeypoints:Whiteboard:Examples:………………五．Teachingreflection