代词it的用法归纳

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1、代词it的用法归纳一虚词（第1-6项）二形式主语（第7项共十一种句型）三形式宾语（第8项）四强调主语（第9项）Thisisnotmybook.ItisJim’s.___________________________________1、指代前面提到过的事物。---What’sthis?---It’sapencil.---What’sthat?---It’sapicture._______________________________________2、代替指示代词this或thatSomeoneisknockingatthedoor.Pleasegoandseewhoitis.Itisa

2、lovelybaby.________________________________________3、指婴儿或不明身份的人---What’sthetimenow?---It’steno’clock.______________________________________4、表示时间或季节---What’stheweatherliketoday?---It’sfine.______________________________________5、表示天气Howfarisitfromyourschooltoyourhome?______________________________

3、_________6、表示距离_____________________________________(1).It+be+adj.+ofsb.todosth.常用的adj:kind/good/wrong/foolish......“某人做某事是......的"=Sb.+be+adj.+todosth.It'ssillyoftheboytofeedthecatwithacarrot.=Theboyissillytofeedthecatwithacarrot.那个男孩用胡萝卜喂猫真是太傻了。Itisgenerousofyoutohelpthosepoorkidsinthemountians.

4、你帮助山里的穷孩子真是太慷慨了。=Youaregeneroustohelpthepoorkidsinthemountians.7、用作形式主语，常用于下列11种句型中_____________________________________(2).It+be+adj.+(forsb.)todosth.常用的adj:important/difficult/easy/commom..."(对某人来说，)做某事是……"=Todosth.+be+adj.(forsb.)It'simpossibleforSimontoswimacrosstheriver.对西蒙来说，游过那条河是不可能的。=Tosw

5、imacrosstheriverisimpossibleforSimon.ItispossibletogohikingontheGreatWallinsomeotherplaces.=TogohikingontheGreatWallinsomeotherplacesispossible.Note:ItisalsogreatfunwalkingandcyclinginGuilin.=WalkingandcyclinginGuilinisalsogreatfun.动名词doing和不定式todo的区别动名词只表示常见性的动作；如果表示具体的或特定的或有待于实现的动作用不定式。Paintingi

6、sanart.TopaintthefenceisdifficultforJimmy.=ItisdifficultforJimmytopaintthefence.(3).It+be+nouse/nogood/nofun/(awasteoftime)+doingsth.做某事是……看太多的电视没有好处。ItisnogoodwatchingtoomuchTV.对必然要发生的事打赌是毫无意义的。Itisnofunbettingonasurething.跟他交谈浪费时间。Itisawasteoftimetalking/totalkwithhim.学而不思则罔。It'snouselearningwit

7、houtthinking.(4).It+be+N.+todosth.常用的名词：apity/apleasure/anidea..."做某事是……错过如此重要的演讲太可惜。Itisapitytomisssuchanimportantlecture.很高兴你能来。Itwasapleasuretohaveyouhere.(5).It+be+timetodosth./forsth/that(didsth).“到该做……的时候了”