人教新课标必修二Unit4Discoveringusefulstructures课件

人教新课标

必修二

DiscoveringUsefulStructures

Unit4HistoryandTraditions1.identifythepastparticipleastheattribute,theobjectivecomplement,thepredicativeandtheadverbial;2.summarizethefunctionofthepastparticipleastheattribute,theobjectivecomplement;3.practiseusingthepastparticipleastheattribute,theobjectivecomplement,thepredicativeandtheadverbial.LearningObjectivesUnderlinethesentencesbelowinthetextandfindoutthepastparticiples.Andthendiscusstheirfunctions.Mostpeoplejustusetheshortenedname:“theUnitedKingdom”or“theUK”.Theyusethesameflag,knownastheUnionJack,...TheyhadcastlesbuiltallaroundEngland,...PresentationastheobjectcomplementastheattributeastheattributeTheUnitedKingdom,GreatBritain,England—manypeopleareconfusedby...TheyconqueredEnglandafterthewell-knownBattleofHastingsinthe11thcentury.astheattributeThenfindmoresentenceswiththe-edforminthetext.astheattribute过去分词或过去分词短语在句中可作定语或宾语补足语。PastParticiplesastheAttribute(1)tiredvisitorsawell-organisedtripbeautifullydressedstarsCompletethephrasesintherightcolumnbyusingthepastparticiplesintheleftcolumn.Comparethemeaningofeachpairofphrases.PastParticiplesastheAttribute(2)visitors_____ofthelongwait/...atrip_________wellbymyworkplace/...stars_______beautifullyattheevent/...tiredorganiseddressed

过去分词

PastParticiples(1)Summary过去分词一般表示完成的和被动的动作。规则动词的过去分词由动词原形加-ed构成；不规则动词的过去分词没有统一的构成规则。过去分词一般在句子中可以用作定语（theattribute）、宾语补足语（theobjectcomplement）、表语（thepredicative）和状语（theadverbial），但不能单独构成谓语。一、过去分词作定语的时态和语态意义1.

及物动词的过去分词作定语，在语态上表示____________；在时间上，常表示动作_______________，有时也不表示时间性。E.g.Heisateacherrespected

byall.Thehighbuildingbuilt

lastyearisourlibrary.2.不及物动词的过去分词作定语，它不表示_____________，只强调动作___________。E.g.Thegroundiscoveredwiththefallen

leavesinautumn.被动已完成被动已完成过去分词（短语）作非限定性定语，相当于非限定性定语从句，用来补充说明被修饰词的情况，通常用逗号与主句隔开。Thebridge,builtlastyear(=whichwasbuiltlastyear),isinusenow.

这座桥，去年建成，现在已通行。二、过去分词作定语时的位置：1.前置定语

一般情况下，单个过去分词作前置定语，即放在被修饰词

之前。有时为了表示强调，也可放在被修饰词之后。如：

Thepollutedwaterwastoblameforthespreadofcholera.

污染了的水造成了霍乱的传播。【注】如果被修饰的词是由every/some/any/no与body/one所构成的复合代词或指示代词those等，单个分词放在被修饰词的后面。E.g.Isthereanythingunsolved？

Heisoneofthoseinvited.二、过去分词作定语时的位置

后置定语

过去分词短语作定语时往往作后置定语，即放在被修饰词

之后。

E.g.LastTuesdayinamountainousarea,therewereatotalof173sheepkilledalmostimmediately(＝whichwerekilledalmostimmediately)whenlightningstruck.三.过去分词（done）作定语时与现在分词(doing)的区别1.过去分词与现在分词作定语的区别意义形式语态时态过去分词被动完成现在分词主动进行E.g.Asweallknow,Chinaisadeveloping

country.Thevisitorcamefromadeveloped

country.2．过去分词(done)、现在分词的被动语态(beingdone)与动词不定式的被动语态(tobedone)作定语的区别意义形式语态时态done被动完成beingdone被动进行tobedone被动尚未发生E.g.Thebuilding_____________

lastyear

isourclassroombuilding.（build）Thebuilding_____________

now

isourclassroombuilding.（build）Thebuilding_____________

nextmonth

isourclassroombuilding.（build）

builtbeingbuilttobebuilt四、过去分词作宾语补足语1.过去分词作宾补表示的意义。

过去分词作宾补时，过去分词所表示的动作一定和宾语有逻辑上的动宾关系。2.能够接过去分词作宾补的动词有以下三类：(1).表示感觉或心理状态的动词。如：see,watch,observe,lookat,hear,listento,feel,notice,think等。E.g.IheardthesongsunginEnglish.我听到有人用英语唱过这首歌。E.g.Hefoundhishometowngreatlychanged.他发现他的家乡变化很大。(2).表示“使,让”意义的动词。如：have,make,get,keep,leave等。E.g.I'llhavemyhaircuttomorrow.

明天我要理发。E.g.Hegothistoothpulledoutyesterday.他昨天把牙拔了。E.g.Don'tleavethosethingsundone.要把那些事情做完。(3).

表示“希望”、“要求”意义的动词。如：like,order,want,wish等。E.g.Iwouldlikethismattersettled