高二英语 it用法课件.ppt

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,Grammar,The use of“it”,It,is never too old,to learn,.,活到老,学到老。,It,is no use,crying over spilt,(,溢出的,),milk,.,覆水难收。,It,takes three generations(,代,),to make a,gentleman.,十年树木,百年树人。,Proverbs(,谚语,)with“It”,The use of“it”,一、用作人称代词,代表前面提到的人或事物,Whos it?_ me.,Look at the picture._ is a picture,of our school.,Its,It,二、用于代替指示代词,this,和,that,。,-Is this jacket yours?,-Yes,_ is.,it,三、用以表示时间、距离、天气、气候、,季节、环境等,It is half past eight now.,Its only half an hours walk from here,to our school.,3)I hope that it will be fine tomorrow.,4)It has rained much this year.,5)Its spring now.,6)Its quiet here.,Time,Distance,Weather,Weather,Season,Circumstance,替代作主语的从句、动词不定式、动名词,而把真正作主语的从句、动词不定式、动名词置于句尾。,四、,it,用作形式主语,1.,代替动词不定式做主语,1,),It be adj.,(,for sb.,),to do sth.,此处,adj.,通常为描述事件的形容词,:,easy,difficult,necessary,important,p,ossible,d,angerous,right,w,rong,legal,useful,useless,It is,illegal,to drive a car without a license,.,2,),It be adj.of sb.to do sth.,此处,adj.,通常为描述人的形容词,:,kind,nice,rude,polite,cruel,considerate,thoughtful,careful,careless,foolish,stupid,clever,wise,crazy.,Its,kind,of you to help me with the problem.,It,s,(,well,),worth one,s while doing/to do,It is worth my while to explore the city.,这值得我花时间,/,精力勘察这个城市,It,s,(,well,),worthwhile doing/to do,It is worthwhile to explore the city.,Its no good/,use,/pleasure doing,It is no use studying only at school.,2.,代替动名词做主语,3,.,代替主语从句作形式主语,It is clear(obvious,true,possible,certain,)that.,（注意没有,it is sure that,该句型中,it,是形式主语,真正的主语是,that,引导的主语从句,常译为“清楚,(,显然,真的,)”,是主语从句最常见的一种结构。,e.g.,It is very clear that hes,tall.,It is adj.+,从句,It is said(reported/believed.)that.,该句型中的,it,仍是形式主语,真正主语是,that,引导的主语从句,;,该结构常译为“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 v-ed that,It is+noun+,从句,It is a pity(a shame/an honor/a good thing/,a fact/a surprise/.)that.,该句型中,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。如：,It is a pity that such a thing(should)happen in your,class.,这种事竟然发生在你们班上,真是遗憾！,It is a pity that,you cant come,.,你不能来，真是遗憾！,五、,it,作形式宾语,当复合宾语中的宾语是不定式、动名词，宾语从句时,往往把宾语放在它的补足语后面，而用,it,作形式宾语,放在宾语补足语之前。,该句型中的,it,作形式宾语,常用的动词有,think,believe,make,find,consider,feel,等。,I think,it,no use,arguing with him,.,参考：,It,is no use,arguing with him,.,I found,it,very interesting,to study,English,.,参考：,It,was very interesting,to study English,He made,it,clear,that he was not,into the car.,参考：,It,was clear,that he was not into the car.,Many new reserves have been built,_,_(,这使这些猴子可能,),to survive.,which makes it possible for the monkeys,it,作形式宾语的特殊句型,结构动词,+it+if/that/when,动词有喜欢类：,enjoy,like,appreciate,prefer,讨厌类：,hate,dislike,I would appreciate it if you paid in cash.,I like it when my mother is happy.,I hate it when people talk with their mouths full.,其他类：,see to it that,owe it to,sb,that.,rely/depend on it that,take it for granted that,leave it to,sb,that,make it a rule that,注意：,keep/bear in mind that,中间没有,it,See to it that,the baby must be fed when hungry but not too much.,留意，务必,He,took it for granted that,he would pass the exam.,想当然地认为,Dont,depend/rely on it that,he will arrive on time.(,指望,),I,owed it to Tom that,I found the job I wanted.,把,归功于某人,I will,leave it to you whether,you go abroad or not.,I have,made it a rule that,I will do some English reading every day.,习惯做，规定必须做，经常做,六、用于强调句型中,It+be+,被强调部分,+that/who(a person),从句,I,met,Tom,in,the,park,yesterday.,1),It was,I,who,met Tom in the park yesterday.,2),It,was,Tom,who,I met in the park yesterday.,3),It,was,in the park,that,I met Tom yesterday.,4),It,was,yesterday,that,I met Tom in the park.,It was five oclock _ I got home.,It was,at,five oclock _ I got home.,when,that,It is not until+,被强调部分,+that.,该句型也是强调句型。主要用于强凋时间状语,译成汉语“直到,才,”,可以说是,not.until.,的强调形式。如,:It was not until she took off her dark glasses that,I realized she was a famous film star.,=Not until,she took,off her dark glasses did I,realize she was a famous film star.,=I didnt realize she was a famous film star,until she took off her dark glasses.,七、,i,t,常用的固定搭配,make it,在口语当中相当于,succeed,表示,:,成功、,做到、说定、赶上、及时到达 如,:,Its hard to make it to the top in show business.,2.take it,easy,相当于,Don,t worry or dont hurry.,用来劝告,别人,表示“不要慌,别担心,沉住气”,Take it easy,！,He will do it well.,3.It all depends/that all depends,在口语中,相当于,it hasnt been decided yet,表示“那,得看情况,还没有定下来”,Are you going to the countryside for holiday,?,It/That all depends.,4.Its up to sb.,在口语中,相当于,its decided by sb.,表示“由,决定,由,负责,取决于,”,Shall we go out for dinner,？,Its up to you.,高考链接,1.He didnt make _ clear when and,where the meeting would be held.(,天津,2007),A.this B.that C.it D.these,2._ is our belief that improvements in,health care will lead to a stronger,more,prosperous economy.(,浙江,2006),A.As B.ThatC.This D.It,C,D,3.The doctor advised Vera strongly that,she should take a holiday,but _ didnt,help.(2005,全国,),A.it B.she C.which D.he,4.Id appreciate _ if you would like,to teach me how to use the computer.,(,山东,2006),A.thatB.it C.this D.you,A,B,5.It was _ he came back from,Africa that year_ he met the girl,he would like to marry.江西,2009),A.when;then B.not;until,C.not until;that D.only,when,6.It was along the,Missippi,River _,Mark Twain spent much of hid childhood.,(,天津,2008),A.how B.which C.that D.where,C,C,Exercises:,1.I hate _ when people talk with their,mouths full.,A.it B.that C.these D.them,2.In which play is _ your brother,will appear?,A.that where B.this when,C.it that D.it where,3._ the harder you work,the better,result youll get.,A.Its believed that B.What we believed that,C.Its fact D.What the fact is,A,C,A,4.Nothing can stop us,_?,A.cant it B.can it C.cant we D.can we,5.-Can you tell us how the war was won in,the end?,-I dont know,_.,A.Its hard to say B.It doesnt matter,C.Its no use saying,D.It depends on the work,B,A,6.Does _ matter a lot whether she,will come here by bus or by taxi?,A.The thing B.that C.it D.her mother,7.-Listen!Someone is unlocking the goods.,-_ must be your father coming,back from Beijing.,A.It B.There C.That D.This,C,A,8.-Have you written a letter to her?,-No,but Im going to write _ tonight.,A.it B.that C.those D.one,10._ now pretty late,we took candles,and went upstairs.,A.Being B.For C.For being D.It being,D,D,11.The teacher told the students _.,A.why to learn English important,B.why was it important to learn English,C.why it important to learn English,D.why it was important to learn English,12.The TV sets made in China are much,better than _ in Japan.,A.that B.those C.them D.it,D,B,13.Our food and service are better than _,used to be.,A.It B.we C.they D.them,14.-Im looking for a flat.,-Would you like _ with _ garden?,A.it;the B.it;a,C.one;a D.one;the,15._ four years since I joined the Army.,A.It was B.It is,C.There is D.There was,C,C,B,