新概念英语青少版4A Unit 20.ppt

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1、U20OnemaninaboatListeningandUnderstandingFishingismyfavoritesport.Ioftenfishforhourswithoutcatchinganything.Butthisdoesnotworryme.ListeningandUnderstandingSomefishermanareunlucky.Insteadofcatchingfish,theycatcholdbootsandrubbish.ListeningandUnderstandingIamevenlesslucky.Inevercatchanything–noteve

2、noldboots.Afterhavingspentwholemorningsontheriver,Ialwaysgohomewithanemptybag.ListeningandUnderstanding‘Youmustgiveupfishing!’myfriendssay.‘It’sawasteoftime.’Buttheydon’trealizeoneimportantthing.I’mnotreallyinterestedinfishing.Iamonlyinterestedinsittinginaboatanddoingnothingatall!GuidedConversati

3、onNo,itdoesn’t.Yes,Ido.No,theyaren’t.Yes,they,are.Oldbootsandrubbish.BecauseInevercatchanything.Ontheriver.Withanemptybag.Giveupfishing.It’sawasteoftime.Oneimportantthing.Sittinginaboatanddoingnothingatall.GuidedConversationFishingisthewriter’sfavoritesport.Someunluckyfishermencatcholdbootsandrub

4、bish.Thewriterisnotsolucky.Henevercatchesanything.Heisnotreallyinterestedinfishing.Sittinginaboatanddoingnothingatallistheonlythingthatinterestshim.PatternPracticebekeenongiveupwithoutCongratulationssb.ondoingsth.KeyStructuresa动名词可作名词使用，直接作句子的主语，不定式也可以作句子的主语，但是通常用it做形式主语Drivingfastisdangerous.Iti

5、sdangeroustodrivefast.Todrivefastisdangerous.(少见)b紧跟在介词后的动词必须用动名词形式，例如：He’skeenoncycling.She’safraidofstayinglateintheshop.KeyStructurescⅠ注意without,after,before+动名词的用法，例如：Heleftwithoutpaying.Ⅱ比较：Imustapologizeforinterruptingyou(此刻)/havinginterruptedyou.(之前)再比较：Afterlooking/havinglookedathiswatch,

6、hehurriedaway.这里的两种形式没有区别，因为这两个动作有明显的先后。现在，请比较:Hecongratulatedmeonwinning/havingwonthecompetition.这里的doing和havingdone两种形式含义稍有区别，用winning表示前后两个事情衔接比较紧密，而用havingwon表示前后两个事情间隔较长。Ⅲon+动名词，例如：Onhearingthenews,shefainted.=Whensheheardthenews,shefainted.Ⅳ注意词语not的位置，例如：Iapologizefornotlettingyouknowearlie

7、r.ReadingFTTTFTFF