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时间:2019-05-15
《Unit 2 The Environment Grammar 导学案 2》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit2TheEnvironmentGrammar导学案2【学习目标】-ing分词作状语可以表示时间、原因、结果、条件、让步、方式或伴随【自主学习】1.作时间状语,相当于时间状语从句(常同连词when,after,while,once,until等连用)注:当现在分词短语用来表示时间时,可以和when,after等引导的时间状语从句互换1.Hearingthebadnews,theycouldn’thelpcrying.=Whentheyheardthebadnews,theycouldn’thelpcryin
2、g.当听到这个不幸的消息时,他们情不自禁地哭了起来。2Havingreceivedhisletter,Idecidedtowriteback.=AfterIhadreceivedhisletter,Idecidedtowriteback.收到他的信后,我决定给他回信。2.作原因状语Beingastudent,Imustworkhard.=BecauseIamastudent,ImustworkhardBeingsoangry,hecouldn’tgotosleep=Becausehewassoangry,heco
3、uldn’tgotosleep.因为太生气了,他不能入睡。HavingbeentotheGreatWallmanytimes,hedidn’tgolastweek.=因为他已经去过长城许多次,上周他就没去。3.作条件状语Workinghard,youwillsucceed.=Ifyouworkhard,youwillsucceed.如果你勤奋一点,你就会成功。Puttingmoresaltintothesoup,youwillfinditmoredelicious=Ifyouputmoresaltintothes
4、oup,youwillfinditmoredeliciousBeinggivenmoreattention,thetreescouldhavegrownbetter.=4.作伴随状语:Theycameintotheclassroom,singingandlaughing.=•Thestudentscamein,______________(follow)theirteacher.•Mycousincametoseemefromthecountry,_____________(bring)meafullbasket
5、offreshfruits.5.作结果状语当现在分词短语用来表结果时,可以和asaresult引导的结果状语从句互换。也相当于which引导一个非限制性定语从句Thefactorykeepsreleasingsmoke,makingtheairdirty.=Thefactorykeepsreleasingsmoke,———————————(非限制性定语从句)=Thefactorykeepsreleasingsmoke.___________theairismadedirty.•Shedoesexercisefor
6、anhoureveryday,causinghertokeepaslimfigure.•=Shedoesexerciseforanhoureveryday,____________hertokeepaslimfigure.•=Shedoesexerciseforanhoureveryday,____________,shekeepsaslimfigure.6.作让步状语-ing短语作让步状语,可置于句首或句末,常与evenif,though连用。如Thoughworkingfrommorningtillnight
7、,hisfatherdidn’tgetenoughfood.=Althoughhisfatherworkedfrommorningtillnight,hedidn’tgetenoughfood.虽然他父亲从早到晚拼命地干活,但是他还是挣不到足够的吃的。注意:.1.分词作状语时,其逻辑主语同主句的主语一致且有逻辑主动关系,往往可转换为相应的状语从句。2.现在分词的否定式中,否定词not必须放在最前面。现在分词的否定形式not+现在分词(完成的否定式not放在having之前)Notknowinghowtodyeth
8、esilkred,hewenttoherforhelp.Nothavingheardfromhersonforalongtime,themotherworriedagreatdeal.3.现在分词作状语时,其逻辑主语必须与句子的主语相同;如果不相同,分词前必须加上自己的主语,这种结构被称为独立主格结构。•Timepermitting,Iwillstayforanother
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