内蒙古翁牛特旗乌丹第一中学高中英语unit3Grammar教案新人教版必修5教学目标：1.Learnaboutthepastparticipleusedastheadverbial2.Knowthedifferencebetweenthepastparticipleandthepresentparticiple.教学重、难点：1.Masterthepastparticipleusedastheadverbial2.EnabletheSstousethepastparticipleusedastheadverbialfreelyandproperlyinwriting.教学方法：Task-basedteachingandlearning教学内容：Step1RevisionStep2Leadin.Step3PresentationThemuseumwasbuiltin1910.Themuseumisalmost100yearsold.CombinethetwosentencesusingthePastParticipleastheAdverbial.Builtin1910,Themuseumisalmost100yearsold.Inthissentencethepastparticipleisusedas_______________.Itisawaytojointwoclausestogether.过去分词（短语）作状语，像现在分词作状语一样，修饰谓语动词，大多是用来进一步说明动作发生的背景或情况，在意义上相当于状语从句，表示时间、原因、条件、让步、方式或伴随情况等。一．过去分词（短语）作状语的几种情况1.作时间状语，相当于一个__________状语从句.Whenaskedbytheteacher,thelittleboykeptsilent.=Whenhewasaskedbytheteacher,thelittleboykeptsilent.教学流程：3.作条件状语,相当于一个__________状语从句.Givenmoretime,wecoulddoitmuchbetter.=_________________________________,wecoulddoitmuchbetter.4.作让步状语,相当于一个__________状语从句.Warnedofthestorm,thefarmerswerestillworkinginthefields.=_________________________________,thefarmerswerestillworkinginthefields.归纳：把分词短语转变为状语从句时，该状语从句应该具备两个特征：1）从句的主语和主句的主语________________。2）从句的谓语动词为_____________形式。5.作方式或伴随情况状语,相当于一个______________。Theyoungmanwasbusypreparinghispaper,lockedinhisfather’sstudyalldaylong.Theoldmanstoodup,___________(support)byhisson.=Theoldmanstoodup,andhe_______________(support)byhisson.注意：要分析句子结构,弄清楚该填__________还是_____________.二．过去分词作状语的注意事项（1）过去分词作状语，其逻辑主语通常要与句子的__________一致；（2）过去分词充当状语时，其前可加when,while,if,once,unless,though/although等连词。If(itis)translatedwordbyword,thepassagewillbedifficulttounderstand.Evenifinvited,Iwon’tgo.=Evenif__________invited,Iwon’tgo.此时连词+过去分词相当于一个含有被动语态的______________。这种带有连词的过去分词通常可看作是一种省略句，省略的部分是________________,省略的主语要与________________相同。（3）有些过去分词及短语来源于系表结构，作状语时并不强调被动而重在描述主语的状态。这样的过去分词及短语常见的有：lost（迷路）;seated（坐）;hidden（躲）;lost/absorbedin（沉溺于）;dressedin;tiredof;devotedto;Dressedinablackcoat,helooksveryhandsome.Lostinthought,hedidn’tnoticehismothercomein.Devotedtohiswork,thedoctorcareslittleaboutanyotherthings.(4)当分词的逻辑主语与句子的主语不一致时,即分词有自己独立的逻辑主语时，要用独立主格结构（名词、代词+doingdone）或with复合结构来替代。Hermoneystolen,shecouldn’tbuyaplaneticketforherhome.Thechiefwasbroughtin,wihhishands______(tie)back.三．过去分词作状语与现在分词作状语的区别：1.Theteachercameintotheclassroom,______________(follow)bytwostudents.2.Theteachercameintotheclassroom,______________(follow)twostudents.__________(see)fromthetop,thestadiumlookslikeabirdnest.3.__________(see)fromthespace,theastronautcannotdiscovertheGreatWall.归纳：现在分词作状语时，通常与其逻辑主语之间存在逻辑上的___________关系。过去分词作状语时，通常与其逻辑主语之间存在逻辑上的___________关系。选择现在分词还是过去分词，关键看句子的主语。如分词的动作是主句的主语发出，就选用__________分词，...
