Lead-inGuessinggame1.ThecountryliesinAsiawithalargepopulation.Itismadeupofmanyislands.Itisnotrichinnaturalresources,butitisratherrichanddeveloped.(Japan)2.Deciderightorwrong1.TheweatherinWenzhouiswarmerthanitinBeijinginwinter.2.Whereismypen?Ican’tfindtheone.It指天气、时间、距离、自然现象、环境等。Itisverycoldtoday.Itisverycoldtoday.Itisfiveo’clock.Itisfiveo’clock.Itistwentymilestothezoo.Itistwentymilestothezoo.Itisveryquiethere.Itisveryquiethere.Itisspringnow.Itisspringnow.一，作指示代词一，作指示代词1）it可作指示代词代替上文提到的事情或情况。1.Mypenismissing,Ican’tfinditanywhere.2.Tomhasfailedintheexam.Haveyouheardaboutit?It用于代替指示代词，或表示“是谁（在某处或做某事）”Eg1:“Who’sthat?”“It’sme.”Eg2:It’syourmotheronthephone.Eg3:“Why,it’syou!”shecried.It还可以用来泛指某件事。Eg1:Isn’titawful!Eg2:Itdoesn’tmatter.一，作指示代词一，作指示代词2).it用法和which引导的非限制性定语从句用法的区别。Hefailedintheexam,anditworriedhim.Hefailedintheexam.Itworriedhim.Hefailedintheexam,whichworriedhim.it和one的区别It用以指特定的前面提到过的事物，即：it和它替换的是同一个事物，it前无修饰语；而one用于替换与前提事物有共同之处,但并不完全一样的事物，因此，one之前或之后一定有修饰语来加以区别。IboughtadictionarythreeyearsagoandIamstillusingitnow.IboughtadictionarythreeyearsagobutIamgoingtobuyanewonesoon.形式主语形式主语ititIt+is/was+形容词/名词+不定式It+is/was+形容词/名词+动名词It+is/was+形容词/名词+that从句在公共场所大声讲话是不礼貌的。Itisimpolitetotalkloudlyinpublicplaces.吃太多朱古力没什么好处。Itisnogoodeatingtoomuchchocolate.很遗憾我没有早点想到这事。ItisapitythatIdidn’tthinkofitearlier.上述句型中，后置的真正主语可取代上述句型中，后置的真正主语可取代itit而置于句首而置于句首..Itisdifficulttotranslatethearticle.totranslatethearticle.TotranslatethearticleTotranslatethearticleisdifficult.Itisstrangethathedidn’tcomeatall.thathedidn’tcomeatall.Thathedidn’tcomeatallThathedidn’tcomeatallisstrange.it做形式主语,代替主语从句时,要注意和as引导的定语从句的区别.ItwasreportedthattheUSwasundertheterroristattack.Aswasreported,theUSwasundertheterroristattack.二，作形式主语或形式宾语二，作形式主语或形式宾语1).it1).it作形式主语或形式宾语作形式主语或形式宾语,,代替不定式、动名词、代替不定式、动名词、主语从句或宾语从句。主语从句或宾语从句。Itisinterestingtolistentothepopularmusic.Itisnouselearningatheorywithoutpractice.Itisnotyetknownwhereshehasgone.Ifinditveryeasytosurftheinternet.Ithinkitmydutytoservethepeople.Ithinkitnecessarythatstudentsshouldmasteraforeignlanguageatschool.Itisinterestingtolistentothepopularmusictolistentothepopularmusic.Itisnouselearningatheorywithoutpractice.learningatheorywithoutpractice.Itisnotyetknownwhereshehasgonewhereshehasgone.Ifinditveryeasytosurftheinternettosurftheinternet.Ithinkitmydutytoservethepeopletoservethepeople.Ithinkitnecessarythatstudentsshouldmasteraforeignstudentsshouldmasteraforeignlanguageatschoollanguageatschool.It作形式主语所构成的某些惯用句型。Itdoesn'tmatter…Itdoesn'tmatter…Itlooksasif…Itlooksasif…Itseemsthat/asif…Itseemsthat/asif…Ithappenedthat…Ithappenedthat…Itappearsthat…Itappearsthat…Itmakesnodifference…Itmakesnodifference…ItlooksasifItlooksasifitisgoingtosnow..Itdoesn'tmatterItdoesn'tmatterwhetheryouwillcomeornot..IthappenedthatIthappenedthatIhadseenthefilm..ItseemsthatItseemsthatheislearningRussian..It+It+动词动词be+be+强...
