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1、it用法考点归纳一、考点聚焦（一）、it的基本用法1.用作人称代词，代替前文提到过的事物。Thetrainhasarrived.Itarrivedhalfanhourago.2.用以代替提示代词this,that。—What’sthis?—It’saknife.—Whosewatchisthat?—It’smine.3.起指示代词的作用，指一个人或事物。—Whoisknockingatthedoor?—It’sme.4.指环境情况等。Itwasverynoisy(quiet)attheverymoment.5.指时间、季节、天气、气候等。—W
2、hattimeisit?—It’seighto’clock.Itoftenrainsinsummerhere.6.指距离。Itisalongwaytotheschool.7.作形式主语。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：1)代作主语的动词不定式，其句型为（1）Itbeadj.(forsb.)todosth.此处adj.通常为描述事件的形容词如：easy,difficult,hard,necessary,unne-cessary,possible,impossibl
3、e,likely,unlikely,right,wrong,important,unimport-ant,legal,illegal,well-mannered,ill-mannered,polite,impolite,clear,obvious,certain,suitable,proper,fit,useful,useless,dangerous等。例如：Itisillegal(forateenager)todriveacarwithoutalicense.（2）Itbeadj.ofsb.todosth.此处adj.通常为描述人的形容词：
4、kind,unkind,nice,rude,cruel,considerate,thoughtful,thoughtless,careful,careless,silly,foolish,stupid,clever,wise,crazy等。例如：It’skindofyoutohelpmewiththeproblem.2)It替代作主语的动名词的常见句型It’snogood/usedoing…It’s(well)worthdoing…It’s(well)worthone’swhiledoing/todo…It’s(well)worthwhile
5、doing/todo例如:It’snousecryingoverspiltmilk.3)It替代作主语的从句常见句型（1）Itis+noun+从句例如：Itisnosecretthatthepresidentwantstohaveasecondtermatoffice.（2）.Itisadj.+clauseIt’ssurprisingthat…(should)………竟然……6It’sapity/shamethat…(should)………竟然……例如：It’simportantthatyoushouldapologizetoherforyour
6、rudeness.(=It’sofmuchimportancethatyoushouldapologizetoherforyourrudeness.)（3）Itverbsb.+clause=Itisv-ing+clauseIt+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze/bother/concern/frighten/please/angersb.that…例如：Itworriedmethatshedrovesofast.(=Itwasworryingthats
7、hedrovesofast.)（4）Itverb(tosb.)that…=sb/sthverbtodo此处常用的动词有：appear,seem,comeabout,emerge,follow,chance,happen,occur,transpire,turnout,workout等。例如：It(so)happened/chancedthattheywereout.(=Theyhappened/chancedtobeout.)（5）Itisv-edthat…=sb/sthisv-edtodo该句型常用下列一些动词的过去分词：say,repor
8、t,think,believe,hope,expect,agree,accept,decide,determine,intend,plan,understand,k
