It的用法初中版.doc

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1、It的用法知识网络“it”在中学英语中出现频率高，用法复杂，学生不易掌握，但把它从下面几个方面归纳之后，学起来就比较容易了。。一、指代人或事（物）1.一般情况下，it指代人以外的事物，指代上文提到过的单数名词，译为“它”。如：Whereistheeraser?Haveyouseenit?What’sthis?Itisacar.2.有时也可指心目中不太清楚的那个人；指代child，baby等性别不太清楚的名词；指代someone和somebody等代表人的不行代词。如：Whoisthatmanatthedoor?Itisthepostman.Thewomanwillhaveababynextm

2、onth.Shehopesitwillbeaboy.Someoneisknockingatthedoor.Whoisit?3.指上、下文提到的事情。如：Itwillbeapityifyoudon’tpasstheexam.(It指if从句所提到的事)Maryisoftenlateforschool.Itmakesherteacherangry.(it指上文提到的玛丽上学经常迟到这件事)4.指时间、天气、气候、距离等，“it”通常不译出来。如：Itishalfpasteight,anditistimeforclass.Itlookslikesnow.Itiswarminspring.Itisf

3、iveminute’swalkfromtheschooltothebusstop.二、用作形式主语，代替不定式、动名词或主语从句等真正主语。真正的主语后置。如：Itisimpossibletodomorningexercise.=Todomorningexerciseisimportant.Itisnouse/goodtalkingaboutitwithher.=Talkingaboutitwithherisnouse/good.Itisimpossiblethatwecanfinishtheworkinashorttime.=Thatwecanfinishtheworkinashortti

4、meisimpossible.三、用作形式宾语，代替不定式、动名词或宾语从句等真正宾语。真正的宾语后置。如：HefounditdifficulttolearnEnglishwell.=HefoundtolearnEnglishwelldifficult.Iconsideritgoodusingthecomputer.=Iconsiderusingthecomputergood.Wefeelitstrangethatnobodywantstogothere.=Wefeelthatnobodywantstogotherestrange.注意：能用这种结构作宾语的动词常见的有：think,cons

5、ider,find,feel,make等。二、用在特殊句型中。如：Itseems/appearsthathehasknowntheresultoftheexam.看起来/似乎他已经指导了考试的结果。Ithappenedthathewasn’ttherethatday.碰巧他那天不在那里。三、it与one和that的区别。One表示泛指，it和that表示特指；it与所指的名词为同一个，that与所指的名词为同一类，但不是同一个。如：Ican’tfindmypen,Iwanttobuyone.(泛指)Ican’tfindmypen,Idon’tknowwhotookitaway.(同一个)Th

6、epenyouboughtisbetterthanthatIbought.(同一类)注意：that可用theone来代替。范例解密()1.Idon’tlikeJuneinWuhan.______istoohotinJune.A.ThisB.ThatC.ItD.One()2.Heputumbrellabehindthedoor,but______isn’ttherenow.A.thatB.itC.oneD.this()3.—Wouldyoulikesomeapples?—Yes,bingme_________.A.thatB.oneC.itD.this()4.—Wouldyoulikesome

7、tea?—Yes,I’dlike_______.A.thatB.oneC.itD.this()5.Thepriceofawatchishigherthan_____ofapen.A.oneB.thisC.thatD.it()6.Is______necessarytotakeoffourshoeswhenweenterthelab?A.everyoneB.thisC.thatD.it()7.Idon’tthin