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1、It的用法一、Tellthefunctionsfor“it”ineachsentence:1、---What’stheweathertogether?---Itisfine.2.Itishardtocommunicatewithhim.3.Ifindithardtocommunicatewithhim.4.ItisLithatwhocleanedtheclassroom.5.Itisabook.二、It用法归纳1,指代it(1).用作人称代词:指代物、整个句子(2)用作非人称代词2,形式it:(1)作形式主语(2)作形式宾语3,强调it4,特殊句型5.在答语中指代this/that:1)
2、.---Whosebookisthat?---It’smine.三、特别注意:it, one和that作替代词的用法及区别 1. it代替前面提到的同一事物,该事物既可以是可数名词也可以是不可数名词。 (特指,指代单数,指代物,同名同物)CanIborrowyourpen?—Sorry,I’musingit.2. one代替前面提到的同类事物中的一个。该事物只能是可数名词,前面可以有冠词,也可以被this、that或形容词修饰,其后也可以有定语。 (泛指,指代可数名词,指代人或物,同名异物)Ihaveabike.Doyouhaveone?Eg:(1).Iboughtadictionary
3、threeyearsagoandIamstillusing______now.(2)IboughtadictionarythreeyearsagobutIamgoingtobuyanew_______soon.(3). that代替前面提到的同类事物中特指的一个。该事物既可以是可数名词也可以是不可数名词,必须要有后置定语,但不可以有前置修饰语。 (特指,指代单数或不可数,指代物,后面有定语)ThecoffeeproducedinBrazilismorefamousthan__________inMexico.代词特指/泛指人/物名词特例it特指物单数可数名词同名同物;指代整个句子that
4、特指物单数可数名词/不可数名词后面有定语;指代上文one泛指人、物单数可数名词同名异物四:形式主语、宾语、强调句及其他1、形式主语ItItisimportanttogivethemoneybacktohimontime.不定式Itisnousearguingwithsuchaperson.动名词ItissaidthathewastheNo.1inthecompetition.主语从句it作句子的形式主语,后面被指代的主语包括:不定式动名词主语从句It替代作主语的动名词 It‘s no good/use doing… It's (well)worth doing… 例 It's no us
5、e crying over spilt milk. 形式主语中的虚拟语气1.Itisimportant(necessary,strange,natural...)that...Itisimportantthatwe(should)haveenoughrice. 2.It's surprising that… (should)………竟然…… 例 It's surpring that you should apologize to her withoutanyreason.3.Itissuggested(ordered/demanded/insisted/commanded...)that
6、...that 后的从句要用虚拟语气(should+动词原形),should可以省;常译为“据建议;有命令...) 4.Itissuggestedthatthemeeting(should)beputoff.1.Itisapity(ashame...)that...that后的从句一般用虚拟语气(should+动词原形),常译为“竟然”。没有这种意义时,则不用虚拟语气。例如;Itisapitythatsuchathing(should)happeninyourclass. 6、Itisadj(forsb.)todosth.important,necessary,natural,impo
7、ssible,unusual,rare,normal,easy,hard,difficult,dangerous,pleasant, likely, right, wrong,, , clear, obvious, certain, suitable, proper, useful, 等、7.Itisadj(ofsb.)todosth.good(好心的),nice(有教养的),polite,kind,brave,careless,h