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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,1.it,作人称代词,1.1.it,的最基本用法是作人称代词，主要指刚提到,的事物，以避免重复,:,Ningbo is a beautiful city,isn,t it?,1.2.,也可以指动物或婴儿,(,未知性别的婴儿或孩子,):,Is this your dog,？,No,it isn,t.,1.3.,也可指抽象事物,:,It was a great surprise to me when he did,a thing like that,1.it作人称代词 1.1.it的最基本用法是作人称代,2.,非人称代词,it,it,有时并不指具体的东西，而泛指天气、时间、环境等，,称为非人称的,it,：,2.1.,指天气：,It is a lovely day,isn,t it?,It is a bit windy.,2.2.,指时间,:,It was nearly midnight when she came back.,2.3.,指环境,:,It was very quiet in the caf,.,2.4.,指距离：,It is half an hour,s walk to the city centre.,2.非人称代词it it有时并不指具体的东西，而泛指天气、时,1.it,作人称代词,Everyone knows that _ is dangerous,to play with fire,but _ is difficult is to,prevent children from playing with fire.,A.it,it B.what,what,C.it,what D.what,it,1.it作人称代词 Everyone knows th,.,引导词,it,1.It is+,被强调部分,+that.,使用该句型有以下几点请注意：,强调句的谓语,is,或,was,永远用单数,.,It was yesterday that I met your father,in the street,不管被强调部分是哪种状语，只能用,that,连接，不得使用,where,、,when,等连词,.,It was in the street that I met your,father yesterday,.引导词it 1.It is+被强调部分+tha,被强调部分为人时，可用,who(,主格或宾格,),和,whom(,宾格,),代替,that,，用,that,也行。,1)It was your father that/whom/who I met in the,street yesterday,2)It was I that/who met your father in the street,yesterday,强调句中也要注意主谓一致、人称一致和否定转移,的问题。,It is they who are our friends,It was not until ten oclock that we got home,last night,被强调部分为人时，可用who(主格或宾格)和whom(宾,.,it,用作形式主语,.1 it,代替主语从句,1,）,It is+adj.+that,从句,It is clear,(obvious,，,true,，,possible certain.),that.,“清楚（显然，真的，肯定）”,It is very clear that he,s round and tall like a tree.,.It is important,(necessary,，,right,，,strange,，,natural.),that.,that,后的从句中要用,虚拟语气,（,should+,动词原形），,should,可以省去，建议记住该句型中的形容词。,It is important that we(should)learn English well.,.it 用作形式主语.1 it代替主语从句 1）It i,2,）,.It is+v-ed+that,从句,It is said,(reported,，,learned.),that.,据说（据报道，据悉）“。,It is said that he has come to Beijing.,=,He is said to have come to Beijing.,.It is suggested,(ordered /demanded/insisted/,commanded.),that.,主句中的过去分词是表示请求，建议，命令等词时，,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）,It is suggested that the meeting(should)be put off.,2）.It is+v-ed+that 从句 It,3,）,.,It+n+that.,1.It is a pity,(a shame.),that.,that,后的从句一般用虚拟语气（,should+,动词原形），,should,可省去表示出乎意料，常译为“竟然”。没有,这种意义时，则不用虚拟语气。,It is a pity that such a thing(should)happen in,your class.,It is a pity that he is ill.,3）.It+n+that.1.It is a,2.It is time,(about time,，,high time),that.,该句型中,that,后的从句应该用虚拟语气，值得注意的是常,用过去时态表示虚拟常译为“是（正是）的时,侯”,/should+,原型,It is time that children went to bed.,It is high time that the children should go to school.,3.It is the first,(second.),time that.,“是第一（二）次”。,该句型中的,that,从句用完成时态。如果主句动词,be,是一般现,在时，后面从句用现在完成时态；如果主句动词,be,是一般过,去时，后面从句则用过去完成时态。该结构中,that,可以省去。,例如：,It was the first time that I had been praised.,It is the first time I have been here.,=This is the first time I have been here.,2.It is time(about time，hi,4.It is no wonder that,It is no wonder that he didn,t want to,go.,No wonder he didn,t want to go.,难怪,他不愿去。,在该句型中如果用肯定形式，表示“真奇怪，,真是令人惊讶”；,It is a wonder that he reused such a,good offer.,真奇怪，他拒绝了这样好的帮助。,4.It is no wonder that It,4).It+v+that,从句,It happens,(seems,，,looks,，,appears),that.,该句型中,it,是形式主语，,that,引导的是主语从句，主,句中的,happen,，,seem,等词是不及物动词。,It happened(so happened)that he met his,teacher in the street.,碰巧,.,It seems that he will be back in a few days.,看,来,It looks as if he is ill.,（真的病了）,It looks as if he were ill.,（没有生病）,It seemed as if he were dying.,4).It+v+that从句 It happens(s,It doesn,t matter whether(if).,该句型中,whether(if),引导的从句是真正主语，,该句型常译为不论（是否）没关,系。,It doesn,t matter if they are old.,It doesnt matter whether(if,.2.,作形式主语替代不定式,1).It takes sb.to do sth.,做要花费某人,It took thousands of people many years to build the Great Wall.,2).It is kind(of sb.)to do sth.,主句中的形容词必须是能表示逻辑主语特征的形容词。,常见的有：,bad,，,brave,，,careless,，,clever,，,cruel,，,foolish,，,stupid,，,wise wrong,等。,这个句型可以改写为：,sb.is kind to do sth.,。,It is kind of you to say so.,=You are kind to say so.,3).It is necessary(for sb.)to do sth,.,常见的形容词有：,important,，,necessary,，,natural,easy,，,safe,，,common,，,normal,，,hard,，,difficult,dangerous,，,等。,在中的形容词作表语可以用从句改写，,如：,It is important for her to come to the party.,=It is important that she(should)come to the party.,.2.作形式主语替代不定式 1).It takes s,4)It is up to sb.to do sth.,It is up,to,him to clean our classroom today.,今天应由他做教室清洁。,It is up,to,parents to teach their children manners.,该由父母教孩子礼貌。,5)It is one,s turn to do sth,.,It is your turn to clean our classroom,today.,今天该轮到你做教室清洁。,4)It is up to sb.to do sth
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