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时间:2019-05-19
《【牛津译林版】(江苏专用)2012届高三英语一轮复习精品学案:语法部分 第3讲 代词》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、第3讲代词(要点透析)it的用法一、指示代词1.指代上文提过的事物。Thatvaseisvaluable.It'smorethan200yearsold.那个花瓶很珍贵,它有200多年的历史。【辨析】one,ones,it,that,thoseit特指上文提到的某人和某物;相当于the+名词。one指上文提到的某人或某物中任何一个。复数形式是ones。one前面若有形容词修饰,必须用冠词。We'vegotabigroomandtwosmallones.我们有一间大房间和两间小房间。Ihaveastorybook.Itisanamusingone.我有一本故事
2、书,它是有趣的。that和those常有后置定语修饰,有特指意义,that代替不可数名词或单数可数名词,相当于the+名词;复数名词用those,相当于theones。Theweightofanelephantismuchgreaterthanthatofahorse.大象比马重得多。【知识运用】①—Ican'tfindmywatch.—Youhaven'tfound______?Ifyouwanttobuyanew______,Isuggestyoubuy______madeinChina.②Thebooksonthefirstshelfareeasier
3、than____________onthesecondshelf.③Theboytoldhimhisstoryandalso__________ofthegirlupstairs.【答案】①it;one;one ②those/theones ③that/theone2.指代人时,常指小孩或身份不明的人。—Someoneisknockingatthedoor.Whoisit?—ItmustbeLeo.Hesaidhe'dcometoseeme.3.指代环境或情况。It'stooquietintheroom.Everyonejustkeepssilent.4.指
4、代时间、季节、天气或距离。Itisspringnowandit'swarmthesedays.【疑难点击】it指代时间时,有如下句型:(1)Itistimeforsth.(forsb.)todosth.that-从句(shoulddo/did,必须用虚拟语气)It'stimeforlunch.It'stimeforustocleanthehouse.It'stimethatweshouldcleanthehouse.=It'stimethatwecleanedthehouse.(2)Itis/hasbeen+sometime+since-从句(从句用一般过去
5、时)(注意从句中延续性动词意义为否定。)ItisthreeyearssinceIbecameadoctor.我当医生已经3年了。(自从我成为医生以来,时间已经过去3年了。)11Itisthreeyearssincehewasadoctor.他不当医生已经3年了。Itistwoyearssincemyfathersmoked.我父亲不吸烟已有两年了。Itistwoyearssincemyfatherbegantosmoke.我父亲吸烟已有两年了。(3)It/Thisisthefirst/second…timethat-从句(必须使用现在完成时)这是某人第……次
6、做了某事。It/Thatwasthefirst/second…timethat-从句(必须使用过去完成时)ItisthesecondtimethatshehasvisitedtheGreatWall.ThiswasthefirsttimethatIhadcomelatetoschool.(4)Itwas+时间点+when-从句Itwaseveningwhenwegothome.=Itwaseveninginwhichwegothome.(5)Itwas/willbe+sometime+before-从句Itwasfiveyearsbeforetheyfina
7、llygraduatedfromBeijingUniversity.过了5年他们终于从北大毕业。Itwon'tbelongbeforewegraduatefromourschool.不久,我们就要从我们学校毕业了。二、it作形式主语,代替由不定式、动名词或名词性从句所表示的真正主语或宾语。Itispossibleformetomakeatouraroundtheworld.ItisnogoodlearningEnglishwithoutspeakingit.Mobilephonesmakeitpossibleforustokeepintouchanywher
8、e.Iconsideritnogoodchattin
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