高中英语复习北师大版《专题复习--含it常用句型讲练》 课件 (共41张PPT).ppt

1、北师大版高中英语语法专题复习含it 常用句型讲练巢湖市烔炀中学 葛平研究一下近年来的高考试卷可以发现，含 it 的句型几乎年年考到。核心考点：强调句型；it用作形式主语或宾语；固定搭配。现根据其用法特点归纳出下面的24个it常用句型。1.It is/was+被强调部分+that.该句型是强调句型。将被强调的部分放在前面，其它部分置于that 之后。被强调部分可以是主语、宾语、表语或状语。强调的主语如果是人，that 可以由 who 换用。e.g.It was they that(who)cleaned the classroom yesterday.It was on Thursday aft

2、ernoon that he told me about the truth.It was in the street that I came across one of my friends the other day.2.It is/was 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。It was not until she took off her dark glasses that I realized she was a famous film star.=Not until she

3、 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.3.It is clear(obvious,possible,likely,certain)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，可能，肯定）”，是主语从句最常见的一种结构。It is very clear that hes round and

4、tall like a tree.=That hes round and tall like a tree is very clear.4.It is important(necessary,essential,strange,natural.)that.该句型和句型3同属一个句型。由于主句中的形容词不同，that 后的从句中常用虚拟语气（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 is necessary that he(should)remember t

5、hese words.5.It is/was 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，人们相信）”。It is said that he has come to realize his miatakes.It is reported that another man-made satellite has been put into orbit.6.It is suggested(ordered,required.)that.该句型和句型5同属一个句型。主句中的过去分词是表示请求、建议、

6、命令等词时，that 后的从句要用虚拟语气（should+动词原形），should 可以省略。常译为“据建议；有命令）”。It is suggested that the meeting(should)be put off.It was ordered that we(should)arrive there in two hours.7.It is a pity(a shame.)that.该句型中，that 后的从句一般用虚拟语气（should+动词原形），should 可省略。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 t

7、hing(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 he is ill.他生病了，真遗憾！8.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；有时也用should+动词原形，should 不能省略。常译为“是（正是）的时侯”。It is time that children should go to bed.=It is time that children went to bed.Its time 结构“

8、是时候了”Its time to begin our classIts time for class.Its time that we should begin our class/began our class.9.It is the first(second )time(day,month,year)that 该句型中的 that 从句不用虚拟语气，而用完成时态。如果主句是一般现在时，后面从句用现在完成时；如果主句是一般过去时，后面从句则用过去完成时。该结构中 that 可以省去；it 有时用 this,that 替换，常译为“是第一（二）次”。It is the first time I

9、 have been here.=This is the first time I have been here.10.It is/has been since.该句型主要用作处理瞬间动词的完成时，又要和表示一段时间的时间状语连用的问题。主句中是时间作表语，其时态是一般现在时或现在完成时，since 引导的从句通常是一般过去时态，而且是瞬间动词。如果主句是一般过去时，从句则用过去完成时。It is(has been)18 years since they got married.v It is+段时间since+主语did.请比较：It was+段时间since+主语had done.如：v

10、他已经离开这儿五年了。v 注意下列句型的翻译：It is five years since he lived here.It is five years since he _here.It was five years since he _ here.lefthad left他从这儿搬走已经有五年了。-It is 5 years since she worked in the shoe factory.-_.A.No wonder she is valued here.B.Where is she working now?C.Now she is a manager.D.She must be

11、 getting on well with her workmates.It is two years since he left London.It is two years since he left London.It is two years since he lived in London.It is two years since he lived in London.他不在伦敦住已经有两年了。他不在伦敦住已经有两年了。类似：类似：meet,see,gomeet,see,go类似类似:stay,smoke,work,be:stay,smoke,work,beIt is three

12、years since he smoked.It is three years since he smoked.他戒烟有三年了。他戒烟有三年了。自从他离开伦敦有两年了。自从他离开伦敦有两年了。11.It is.when.该句型中的 when 引导的是一个时间状语从句，主句中的 it 指时间，表语由具体的时间充当。常译为“当的时候，是”。It was 5 oclock when he came here.12.It be.before.该句型主句中的 it 指时间,主句中的时态常是一般将来时或过去时两种时态。主句中的表语多是long,not long,3 days,2 weeks 等表示时间段的

13、词或短语。常译为“之后”。It was 2 hours before the fire was put out.It wont be long before he finishes his job.13.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

14、14.It takes sb.to do sth.该句型中的不定式是真正的主语，it是形式主语，句型中的直接宾语是时间。常译为“做要花费某人”。It took thousands of people many years to build the Great Wall.15.It is no good(use)doing sth.该句型中的真正主语是动名词短语，主句中的表语还可以是：useless,senseless,worthwhile,a waste of time/money。It is no use crying over spilt milk.覆水难收。Its senseless s

15、eeing such a tiring film a second time.再看一次这种电影真没有意义。It is no good learning English without speaking English.16.It doesnt 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 doesnt matter if they are old.17.It is kind(of sb.)to do sth.17.It is kind(of sb.)to do sth.该句型中的不定式短语是真正主语，如果不定式

16、的逻辑主语是由 of 引起，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,good(好心的),honest,horrible,kind,lazy,modest,naughty,nice(有教养的),polite,rude,silly,stupid,wise,wrong(错误的)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.18.It is necessary(for sb.)to

17、do sth.该句型与上一个同属一个句型。如果不定式的逻辑主语是由for 引起，主句中的形容词通常是表示重要性，紧迫性，频繁程度，难易，安全等情况的形容词。常见的形容词有：important,necessary,natural important,necessary,natural easy,safe,common,normal,hard,easy,safe,common,normal,hard,difficult,dangerous,unusual,rare,difficult,dangerous,unusual,rare,impossible,pleasant impossible,ple

18、asant 等。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 19.It looks(seems)as if.该句型中it 无意义。as if 引导一个状语从句。常译为，“看起来好象 如果与事实不相符合，则用虚拟语气。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.20.

19、like(love,enjoy,prefer,hate,appreciate.)+it+if/when.该句型中it 是形式宾语。I dont like it when prople eat with a full mouth.Id appreciate it if you could give me another chance.类似句型:see to it that.;depend on it that.;take it for granted that.21.We think it important to learn a foreign language.该句型中的it 作形式宾语，为

20、了记忆方便我们可称该句型为6123结构。6指主句中常用的动词：think,believe,consider,make,find,feel；1指的是形式宾语it；2指的是宾补的两种形式：形容词或名词；3指的是真正宾语的三种形式：不定式短语，动名词短语或that引导的宾语从句。she has made it a rule never to eat between meals.We found it no good arguing with him.Ill make it clear to you that failure is the mother of success.22.It is/was表

21、示地点的名词where+从句。（注意本句不是强调句型，而是以where引导的定语从句。）如：It was this house where I was born.请比较：It was in this house that I was born.(后一句是强调句型。)bad manners,a good habit,a shock,a pleasure.23.It is+名词+to do sth睡得很迟并不是一个好习惯。去野炊是一件很快乐的事情。It is not a good habit to stay up late.It is a great pleasure to go to picni

22、c.24.It is up to sb.to do sth 应由某人做某事。It is up to you to decide whether we start or not.1._ is known to us allthat the earth goes around the sun.A.AsB.WhatC.ThatD.It DExercises2.Someone is at the door,who is _?A.thisB.thatC.itD.he C3._ raining hard for three hours without stopping.A.It isB.It wasC.I

23、t has been D.It had been C4.Has the boy got his bicycle now?Yes，the police gave _.A.him to him B.it to itC.it to himD.him to it C5.It is important _ their offer.A.reject B.rejects C.to rejectD.rejectingC6.We needed a new desk.So Peter made _ from some wood.A.it B.one C.himselfD.anotherB7.Has _ been

24、decided when we are to hold the sports-meeting?A.that B.this C.what D.itD8.I dont know_he has gone.A.where is it that B.where it is thatC.is it where that D.it is where that B9._ certain that his invention will lead to the development of production.A.ThatsB.This isC.Its D.Whats C10._ that he will study abroad for four years.A.It saysB.It is saidC.It was said D.He is said B