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时间:2018-10-18
《“it”用法及其句型和固定搭配讲解(1)》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、“It”用法及其句型和固定搭配讲解(1) “It”用法及其句型和固定搭配,是高中英语语法的重点、难点,又是近几年高考的热点,因此应给予充分的重视,现将it用法归纳如下: 表达以下概念:指代前文提到的事物,前文中的this,that;替代前文中的内容;指代一位性别不明的小孩或未知的人;指代未指明但谈话双方都知道的那件事;指代时间、天气、气候、距离等自然现象…… 替代作主语的从句、动词不定式、动名词,而把真正作主语的从句、动词不定式、动名词置于句尾。 It作形式主语的常见句型: Itbedosth. 此处adj.通常为描述事件的形容词:easy,dif
2、ficult,hard,necessary,unnecessary,possible,impossible,likely,unlikely,right,wrong,important,unimportant,legal,illegal,well-mannered,ill-mannered,polite,impolite,clear,obvious,certain,suitable,proper,fit,useful,useless,dangerous… 例Itisillegaltodriveacarwithoutalicense. Itbeadj.ofsb
3、.todosth. 此处adj.通常为描述人的形容词:kind,unkind,nice,rude,cruel,considerate,thoughtful,thoughtless,careful,careless,silly,foolish,stupid,clever,wise,crazy. 例It’skindofyoutohelpmewiththeproblem. It替代作主语的动名词的常见句型 It’snogood/usedoing… It’sworthdoing… It’sworthone’swhiledoing/todo… It’swo
4、rthwhiledoing/todo 例It’snousecryingoverspiltmilk. Itis+noun+从句 例Itisnosecretthatthepresidentwantstohaveasecondtermatoffice. Itisadj.+clause It’ssurprisingthat…………竟然…… It’sapity/shamethat…………竟然…… 例It’simportantthatyoushouldapologizetoherforyourrudeness. Itverbsb.+clause=Itisv
5、-ing+clause It+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze /bother/concern/frighten/please/angersb.that… 例Itworriedmethatshedrovesofast. Itverbthat…=sb/sthverbtodo 例Ithappened/chancedthattheywereout. Itisv-edthat…=sb/sthistodo 例Itissaidthatthecouplehavegott
6、endivorced. Itisv-edthat…… (verb=demand,request,require,order,suggest,advise,recommend 例Itissuggestedthattheyshouldbeginwiththethirdquestion.[1][2][3]
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