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时间:2018-12-15
《高考英语一轮复习 语法部分 第13讲 it的用法及强调句型精品学案 新人教版》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13讲it的用法及强调句型it的用法一、it作指示代词【完成句子】用one,ones,it,that,those填空(1)—Ican'tfindmywatch. —Youhaven'tfound______?Ifyouwanttobuyanew______,Isuggestyoubuy______madeinChina.(2)We'vegotabigcupandtwosmall______.(3)Theweightofanelephantismuchgreaterthan______ofatiger.(4)Thebo
2、oksonthefirstshelfareeasierthan______onthesecondshelf.(5)Theboytoldhisstoryand______ofthegirlupstairs.【答案】(1)it;one;one (2)ones (3)that(4)those/theones(5)that/theone【结论1】①指代上文提过的事物时,it指的是同名同物,相当于the+名词;②one指的是同名异物,表示单数可数名词相当于a+名词;a/an+形容词+one等于a/an+形容词+名词;复数形式用o
3、nes;③that后面常有后置定语,有特指意义,代替不可数名词或单数可数名词,相当于the+名词;④复数名词用those,相当于theones。【例句观察】—Someoneisknockingatthedoor.Whoisit?—ItmustbeLeo.Hesaidhe'dcometoseeme.【结论2】it指代人时,常指小孩或身份不明的人。【例句观察】It'stooquietintheroom.Everyonejustkeepssilent.【结论2】it可用以指代环境或情况。【完成例句】根据语境补全句子(6)—W
4、hattimeisitnow?—It'shalfpastseven.(7)—Itisspringnowandit'swarmthesedays.【结论4】it可用以指代时间、季节、天气或距离。【注意】it指代时间时,有如下一些句型:(1)Itistimeforsth.(forsb.)todosth./that-从句(shoulddo/did,必须用虚拟语气)例:①It'stimeforlunch.②It'stimeforustocleanthehouse.③It'stimethatweshouldcleanthehou
5、se.=It'stimethatwecleanedthehouse.(2)Itis/hasbeen+sometime+since-从句(从句用一般过去时)(3)It/Thisisthefirst/second…timethat-从句(必须使用现在完成时)这是某人第……次做了某事。It/Thatwasthefirst/second…timethat-从句(必须使用过去完成时)例:①ItisthesecondtimethatshehasvisitedtheGreatWall. ②Thiswasthefirsttimetha
6、tIhadcomelatetoschool.(4)Itwas+时间点+when-从句例:Itwaseveningwhenwegothome. =Itwaseveninginwhichwegothome.(5)Itwas/willbe+sometime+before-从句例:①过了5年他们才从北大毕业。ItwasfiveyearsbeforetheyfinallygraduatedfromBeijingUniversity.②不久,我们就要从我们学校毕业了。Itwon'tbelongbeforewegraduatefro
7、mourschool.二、it作形式主语【完成例句】根据语境补全句子(8)Itispossibleformetomakeatouraroundtheworld.【结论】代替由不定式、动名词或从句所表示的真正主语。为平衡句子,通常把不定式作主语改为it作形式主语。三、it作形式宾语【例句观察】①Howdiditcomeaboutthatsomanypeoplewereattacked?②Shefeelsithardtogetintouchwithheroldfriend.③Mobilephonesmakeitpossib
8、leforustokeepintouchanywhere.④Ihavemadeitaruletogetupearly.【结论1】①it可以用在某些固定句型中,例如:Howdiditcomeaboutthat-从句意为“……怎么发生的?”②it作形式宾语常用结构有:代替由不定式、动名词或从句所表示的真正宾语。常见结构有:主语+thi
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