高中英语 Unit3 Grammar课件 新人教版必修5 课件.ppt

Unit3LifeinthefutureGrammarPastparticiple(3)usedasAdverbial&Attribute过去分词过去分词与现在分词作状语过去分词表完成、被动与主句主语之间是被动关系;现在分词表进行主动与主句主语之间是主动关系。如果一个被动的动作发生在谓语动词之前则可使用现在分词的完成被动式或过去分词。过去分词表完成、被动作状语时其逻辑主语是主句的主语且与主语之间存在着被动关系。过去分词作状语可表时间原因让步结果方式条件等。观察下列的句子:过去分词作时间状语2.Whenitisseenunderamicroscopeafreshsnowflakehasadelicatesix-pointed.Seenunderamicroscopeafreshsnowflakehasadelicatesix-pointedshape.过去分词作原因状语2.Becauseitwasdoneinahurryhishomeworkwasfullofmistakes.Doneinahurryhishomeworkwasfullofmistakes.过去分词作条件或者假设状语2.IfIamcomparedwithyouwestillhavealongwaytogo.Comparedwithyouwestillhavealongwaytogo.作方式或伴随情况状语2.Shesatbythewindowlostinthought.Shesatbythewindowandshewaslostinthought.lost表示一种迷失心理状态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)过去分词作状语时过去分词的逻辑主语与句子主语一致。过去分词作状语:Rewritewithproperconjunctions2.Askedwhathadhappenedhetoldusaboutit.→Whenhewasaskedwhathadhappenedhetoldusaboutit.3.Wellknownforhisexpertadvicehereceivedmanyinvitationstogivelectures.→Becausehewaswellknownforhisexpertadvicehereceivedmanyinvitationstogivelectures.4.Givenmoretimewewouldbeabletodotheworkmuchbetter.Ifweweregivenmoretimewewouldbeabletodotheworkmuchbetter.5.OncetranslatedintoChinesethebookbecameverypopularamongChineseteenagers.OnceitwastranslatedintoChinesethebookbecameverypopularamongChineseteenagers.6.Deeplyinterestedinmedicineshedecidedtobecomeadoctor.Becauseshewasdeeplyinterestedinmedicineshedecidedtobecomeadoctor.7.LeftaloneathomeSamdidnotfeelafraidatall.AlthoughhewasleftaloneathomeSamdidnotfeelafraidatall.用过去分词作状语来改写句子。2.Ifheisgiventimehe’llmakeafirst-classtennisplayer.→_________he’llmakeafirst-classtennisplayer.3)AsIwasconfusedbythenewsurroundingsIwashitbythela