I、代词代词 it(pronoun)II.形式主语形式主语it(formalsubject)III.形式宾语形式宾语it(formalobject)IV.用用在在强强调调句句型型中中的的 it(emphaticsentence)V.用用在在固固定定结结构构中中的的 it(fixedstructure)It was Sunday.It was a sunny day.Lazy goat decided to go for a walk to the park though it was two miles away.it作代词作代词Unluckily he found he got lost and walked into a strange house.There was a baby in the house.It was crying.Suddenly he realized that it was big big wolfs house.He quickly get away from it before big big wolf came back.it作代词作代词ItwasSunday.Itwasasunnyday.Itwastwomilesaway.Itwascrying.Itwasbigbigwolfshouse.Hequicklygetawayfromit.summary1：it作代词作代词指指时间指天气指天气指距离指距离未知性未知性别的的婴儿或孩子或身儿或孩子或身份不明的人份不明的人代替前文提到代替前文提到过的事物，以避免的事物，以避免重复重复:指示代指示代词:指代指代this或或thatitititit指指指指“同一个同一个同一个同一个”oneoneoneone泛指泛指泛指泛指“同一类，不同一个同一类，不同一个同一类，不同一个同一类，不同一个”；。；。；。；。thatthatthatthat用来代替前面特指的名词，相当于用来代替前面特指的名词，相当于用来代替前面特指的名词，相当于用来代替前面特指的名词，相当于the+the+the+the+名词单数，名词单数，名词单数，名词单数，有时候可与有时候可与有时候可与有时候可与the onethe onethe onethe one互换。互换。互换。互换。them,ones,those是他们对应的复数形式是他们对应的复数形式要点要点1：区分：区分it,them,that,those,one,ones总结总结I had a good I had a good book,but I lost,but I lost itit yesterday yesterday，so Iso Ill buy ll buy anewoneone inXingHuaBookStoretomorrow.tomorrow.ThebooksinXingHuaBookStoreisofhighqualitythanthose/theonesinotherbookstores.高考再现高考再现(10广东广东)Heaskedhisteacher,“Sir,thewaterisawful.Whydidyoupretendedtolike_?”(13四川）四川）Thetrafficonthemainstreetshasalongergreensignalthan_onthesmallones.(11福建）福建）Wehavevarioussummercampsforyourholidays.Youcanchoose_basedonyourowninterests.（14广东）广东）Lastyear,mybrotherandIwenttoMiamiforavacation.Someofmyfriendswhohadbeentherebeforesaid_wasawonderfulholidaydestination.itthatoneit It is/has been 3 years since I visited your It is/has been 3 years since I visited your pany.【句式句式1】it is/has been+it is/has been+段时间段时间+since-+since-自从自从-多久了多久了 It was 3 hours before he realized the truth.It was 3 hours before he realized the truth.【句式句式2 2】It was+It was+段时间段时间+before-+before-过了多久过了多久-才才-It will be 3 months before they complete the It will be 3 months before they complete the bridge.bridge.【句式句式3 3】It will be+It will be+段时间段时间+before-+before-要过多久要过多久-才才-要点要点2：it指时间的几个重要句式指时间的几个重要句式 It was 10 oclock It was 10 oclock when when the big fire broke out the big fire broke out.【句式句式4 4】it was+it was+点时间点时间+when-+when-某事发生于某事发生于-某一时刻某一时刻-It is the second time I have heard of this.It is the second time I have heard of this.【句式句式5】It/this isIt/this is/was the+the+序数词序数词+time+time+现在完成时态现在完成时态/过去完成时过去完成时-（表示某人第几次做某事）（表示某人第几次做某事）要点要点2：it指时间的几个重要句式指时间的几个重要句式对比比训练 1.It will be years _ we meet again.1.It will be years _ we meet again.2.It is ten years _ I came to this 2.It is ten years _ I came to this town.town.3.It is ten years ago _ I came to this 3.It is ten years ago _ I came to this town.town.4.Itisthethirdtime_I_(visit)tothistown.5.Itwas2am._Tangshanearthquaketookplace.A.when A.whenB.thatB.thatC.beforeC.beforeD.D.sincesinceC CD DB B 卓越卓越 舜耕舜耕B BA AhavevisitQuitdrinking?Tough!Completethe“it”sentencesgiveupdrinking,hard,itis,forthemItishardforthemtogiveupdrinking.Itistoughforthem_.toquitdrinkingSee!Abighenploughing!Itisasurprise_.(看到如此大的一只母鸡看到如此大的一只母鸡是一件很惊讶的事情是一件很惊讶的事情)toseesobigahen Itisawonder_.toseeabighenploughingItisnogoodnouse_(cryoverspiltmilk).Oh!Mymilkisspilt(溢出溢出).cryingoverspiltmilkIt is+_+doing sth.no useno good Itissaidthat_(popularthan).Itisinteresting/aninterestthat_.XiaoShenyangwearswomensclothesXiaoShenyangismorepopularthanZhaoItseemsthathewillbebackinafewdays.seems;backinafewdaysIttakeshimalongtimetoloseweight.减肥好难，减肥好难，花老长时花老长时间咯！间咯！summary2：it作形式主语作形式主语Itishardforthemtogiveupdrinking.Itisawondertoseeabighenploughing.Its kind of you to help me with the Its kind of you to help me with the problem.problem.It+be+n./adj./(for/ofsb.)todosth.句型：句型：Itisnogoodnousecryingoverspiltmilk句型：句型：It+be+(no)good/use/useless/senseless+v-ingsummary2：it作形式主语作形式主语Itisinteresting/aninterestthatXiaoShenyangwearswomensclothes.ItissaidthatXiaoShenyangismorepopularthanZhao.句型：句型：It+be+n./adj.v-ed+that从句从句Ithappens(seems，looks，appears)that.Itseemsthathewillbebackinafewdays.句型：句型：Ittakessb.sometimetodosth.Ittakeshimalongtimetoloseweight.句型：句型：高考再现高考再现(09年广东年广东)Janewaswalkingroundthedepartmentstores.Sherememberedhowdifficult_wastochooseasuitableChristmaspresentforherfather.(10全国全国)Thedoctorthought_wouldbegoodforyoutohaveaholiday.（07山东）山东）_worriesmethewayhekeepschanginghismindititit模仿造句模仿造句1.学习英语很有意思。学习英语很有意思。ItisinterestingtostudyEnglish.2.整天玩网络游戏是不好的。整天玩网络游戏是不好的。Itisnogoodplayingcomputergamesallday.3.据说他已经通过了考试。据说他已经通过了考试。Itissaidthathehaspassedtheexam.4.我觉得养成课堂上做笔记的习惯会很有用。我觉得养成课堂上做笔记的习惯会很有用。Ifeelthatitwouldbebeneficialtoformthehabitoftakingnoteinclass.She find it hard to make herself understood.it作形式宾语作形式宾语she,hard,understandsummary3：it作形式作形式宾语Shefindithardtomakeherselfunderstood.it常常用用在在动动词词find，think，make，feelexpect，considerconsider等动词后做形式宾语等动词后做形式宾语Ithinkitimportanttomakeasummaryintime.Ifinditagoodhabitthatwemakeasummaryintime.HefeltitnouselearningEnglishwithoutspeakingit.句型：句型