Unit3Period3GrammarTeachinggoals教学目标1.Targetlanguage目标语言重点词汇和短语swiftly,unsettle,speedup2.Abilitygoals能力目标EnabletheSstousethepastparticipleastheadverbialandthepastparticiplesastheattribute.3.Learningabilitygoals学能目标HelptheSslearnhowtousethepastparticipleastheadverbialandthepastparticiplestheattribute.Teachingimportant＆difficultpoints教学重难点Distinguishtheusageofthepastparticipleastheadverbialandthepastparticipleastheattribute.Teachingmethods教学方法Practice.Teachingaids教具准备Acomputer,aprojectorandablackboard.Teachingprocedures＆ways教学过程与方式StepIWordStudyThispartisaconsolidationofthewordslearntinthisunit.AsktheSstodotheExx.1＆2onpages20＆21andexercisesinUSINGWORDSANDEXPRESSIONSinWorkbookindependently.Thenchecktheanswers.StepIIGrammarTheSswilllearntheusageofthepastparticipleindifferentsituations.Task1MakecleartotheSstheusageofthepastparticipleastheadverbial.T:Nowpleaselookatthesentence:Worriedaboutthejourney,Iwasunsettledforthefirstfewdays.=AsIwasworriedaboutthejourney,Iwasunsettledforthefirstfewdays.过去分词作状语：用作状语的过去分词通常来自及物动词。过去分词用作状语时，修饰主句的谓语动词，意义上相当于状语从句，表示时间、条件、原因、伴随状况等。过去分词作状语，前边往往可以加when,while,asif,asthough。一般说来，这种结构的逻辑主语必须与主句的主语一致。例如：Wheneverpraised,sheblushes.（作时间状语）=Wheneversheispraised,sheblushes.United,westand;divided,wefall.（作条件状语）=Ifweareunited,westand;ifwearedivided,wefall.Writteningreathaste,thisbookisfulloferrors.（作原因状语）=Becausethisbookiswritteningreathaste,itisfulloferrors.Marywasreadingalovestory,completelylosttotheromanticlife.（作伴随状语）=Marywasreadingalovestory,andshewascompletelylosttotheromanticlife.AlthoughborninGermany,JohnlivesandworksinU.S.A.（作让步状语）=AlthoughJohnwasborninGermany,helivesandworksinU.S.A.Task2MakecleartotheSstheusageofthepastparticipleastheattribute.T:Nowpleaselookatthesetwosentences:1.Ifollowedhimtocollectahoveringcarriagedrivenbycomputer.=Ifollowedhimtocollectahoveringcarriagethat/whichwasdrivenbycomputer.2.Tomorrowyouwillbereadyforsomevisitsorganizedbythecompany.=Tomorrowyouwillbereadyforsomevisitsthat/whichwasorganizedbythecompany.过去分词作定语：a.用作前置定语的过去分词通常来自及物动词，带有被动意义和完成意义。例如：Welikeskatinginthefrozenlakeinthewinter.=Welikeskatinginthelakewhichhasbeenfrozeninthewinter.Howmanyfinishedproductshaveyougotuptonow?=Howmanyproductsthathavebeenfinishedhaveyougotuptonow?来自不及物动词的过去分词很少能单独用作前置定语，能作这样用的仅限以下几个词，这时仅表示完成意义，不表示被动意义：aretiredworker=aworkerwhohasretiredanescapedprisoner=aprisonerwhohasescapedafaded/witheredflower=aflowerthathasfaded/witheredfallenleaves=leavesthathavefallentherisensun=thesunthathasjustrisenareturnedstudent=astudentwhohasreturnedvanishedtreasure=treasurethathasvanishedb.用作后置定语的过去分词通常也来自及物动词，表示被动意义和完成意义。这明相当于一个定语从句。例如：Thingsseenarebetterthanthingsheard.=Thingsthat/whichareseenarebetterthanthingsthat/whichareheard.Thelobsterbroiledovercharcoalwasdelicious.=Thelobsterthat/whichwasbroiledovercharcoalwasdelicious.ThenlettheSsdoExx.1－4onpages20＆21andexercisesinUSINGSTRUCTURESinWorkbooktoconsolidatewhattheyhavelearnt.Andchecktheanswers.Iftimepermits,lettheSslearnthefollowingusageofthepastparticiplei...
