1、It的用法It的用法在高考中也是重现率较高的语言点，尤其是it用于强调句。其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。一、要点点拔1代替上文中提到过的人或事物。指代人时，一般用于小孩或身份不十分明朗的人。1) Who is the baby? Its my teachers son2) Who is that gentleman? Its my friend TomHe(不可用It) wants to see you2用于表达天气、环境、时间、距离、季节等。例如： 1) Its half an hours walk from here to our school
2、2) Its nice and warm here3) But its two oclock now, and its time for us to go to school3用作形式主语.it 没有具体意义，而只是帮助把真正的主语移至句子后尾，使句子显得平稳一些，能借it 给移至句子后尾的主语有三种：一种由不定式表示，一种由动名词表示，一种由从句表示。 1).It 替代真正的主语动词不定式短语.It is easier to say than to do .It is a good act to help the others. 2).it 替代真正的主语动名词短语,以动名词短语做主语的句子
3、，主要在以no good, no use, no harm, dangerous, foolish 等词作表语的句中. Its no harm drinking running water in that area。 Its foolish talking like that.3).it 替代从句作主语，用从句做主语的带it 的句子很多,常见的有下面几类： It is a pity (a shame ,a fact ,a wonder ,a good thing,etc. )thatIt is a shame that he didnt pass the exam. It is strange
4、 ( surprising,obvious,true, good,possible,clear,etc.) that 。It was clear that they had no desire for peace. It seems (happened ,turned out,etc.)thatIt seemed that things were not as they expected. It is said( decided ,expected ,etc)that It is said that the tickets have been sold out .4.用作形式宾语。当复合宾语中
5、的宾语是不定式,ing短语或从句往往用it作形式宾语,而将真正的宾语移至句末,句子重心后移。1) We find it difficult to learn English well in such a short time2) We think it no use crying over spilt milk3) We made it clear when and where we were going to have the meeting5用于强调句型，即“It is/was被强调部分that/who/whom+其它”句型之中。 使用该句型有以下几点请注意： 强调句的谓语is或was永远
6、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 yesterday2) It was I that/who met your father
7、 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。1) It is they who are our friends2) It was not until ten oclock that we got home last night注意不要混淆强调句和其他从句。It is wasthat为强调句标志，去掉后仍可组成一个完整的句子，只是没被强调,而其他从句一般不具备这一特征。比较： 1) It was ten oclock when we got home last night我们昨晚到家时已十点了。2) It was at ten ocloc
8、k that we got home last night我们昨晚是在十点到家的。第一句不是强调句，when不可改为that,因为去掉it was和that后，只能组成“We got home ten oclock last night”这样一个不完整的句子；第二句是强调句，that不可改为when二、常用句型及考点I. 形式主语型 1. It is clear (obvious，true，possible，certain) that 2. It is important (necessary，right，strange，natural)that 掌握本句型，应该记住所列举的形容词，并且记住t
9、hat后的从句应用虚拟语气 (should+动词原形)，should可以省去。 3. It is no good (use) doing sth 4. It is a pity (a shame ) that 本句型中，that后的从句一般用虚拟语气 (should十动词原形)，should可以省去。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。 5. It is time (about time，high time) that 本句型中that后的从句应该用虚拟语气。 6. It is the first (second)time that 7. It is said (re
10、ported，learned)that 8. It is suggested (ordered) that 本句型中的过去分词应该是表示请求、建议、命令等的词，that后的从句要用虚拟语气(should十动词原形)，should可以省略。常译为“据建议；有命令”。 9. It happens (seems，appears) that 10. It takes sbto do sth 11. It doesnt matter whether 12. It is kind (of sb) to do sth 本句型中的不定式如果需要逻辑主语，则须要前置介词of，而句型中的形容词必须是能表示逻辑主语
11、特征的形容词，常见的有bad，brave，careless，clever，cruel，foolish，honest，horrible，kind，lazy，modest，naughty, polite，rude，silly, stupid，wise，wrong等。 13. It is necessary ( for sb) to do sth 14. It is (just) like sb to do sth 本句型为“某人(恰恰)是样子”。用来表示赞扬或不满，若用否定式，则表示怀疑。 例：Its like him to leave the work to others 他就是这样的一个人，把
12、工作推给别人。 15. It is up to sb to do sth 本句型表示“谊由某人做”。II强调句型 It is+ 被强调部分+that/who 本句型中被强调部分可以是主语、宾语或状语。强调的主语如果是人，that可以由who换用。III其他句型 1. It issince 本句型主句中用时间作表语，一般用现在时或完成时，since引导的从句常用瞬间动词的一般过去时态。主句如用一般过去时，则从句用过去完成时。 2. It iswhen 本句型中的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。 3. It looks (seems) as if 本句型
13、中的as if引导一个状语从句，常译为“看起来好像”。如果与事实不相符合，则用虚拟语气 例1 It looks as if he is ill (真的病了) . 例2 It looks as if he were ill (没有生病) .一替代词it, that, (the) one(s), those的用法辨析1. The award on the left is more beautiful than _ on the right. A the one B one C it D this 2. Few pleasures can equal _of a cool drink on a ho
14、t day. A. some B. any C. that D. those3. The hunters younger sister is taller than the elder _. A the one B one C that D this4. I need the plastic bags, not the paper_ . A the one B ones C that D this5. The TV sets made in China are much better than _ in Japan.Athat Bthose Cthem DIt6. Listen to_! We
15、 will have three days off. A the one B ones C that D this7. “A penny saved is a penny earned.” Who said_? A the one B ones C that D this8. I bought a dictionary three years ago and I am still using_ now. A one B ones C it D this9. I bought a dictionary three years ago but I am going to buy a new _so
16、on. A one B ones C it D this10. I was disappointed with the film. I had expected_ to be much better.A.that B. this C. one D .it11 Equipped with modern facilities, todays libraries differ greatly from_.A. those of the past B. the past C. which of the past D. these past12. My most famous relative of a
17、ll, _ who really left his mark on America,wasReb Sussel, my great-grandfather. A. one B. the one C. he D. someone13. He has one blue pen and two red _. A. one B. those C. ones D. ones14. Cars do cause us some health problems in fact far more serious than_ mobile phones do. A. one B. ones C. it D. th
18、ose15. Cook was a strict but good captain, _ who took good care of the sailors on his ship. A. that B. one C. it D. what16. Mr Zhang gave the text books to all the pupils except_who had already taken them. A.these B.ones C.the ones D.the others 17. Im looking for a flat. Would you like _ with _ gard
19、en? Ait; the Bit; a Cone; a Done; the18.Meeting my uncle after all these years was an unforgettable moment, _I will always treasure. A.that B.one C.it D.what19. The style of the building is similar to _of a temple. A.that B.one C.it D.what20. The computers in our school are connected to the Internet
20、 while_in their school arent. A.that B.one C.it D.those21.Our food and service are better than _ used to be.Ait Bthat Cthey Dthose22.Im moving to the countryside because the air there is much fresher than _ in the city. A. ones B. one C. that D. those23.Weve been looking at houses but havent found _
21、we like yet. A. one B. ones C. it D. them24.I prefer a flat in Inveneas to _in Perth, because I want to live near my Moms A. one B. that C. it D. this 25.We needed a new cupboard for the kitchen. So Peter made _ from some wood we had.A. it B. one C. himself D. another二It常用句式1Itwaslastnight_Isawthefi
22、lm. A.thetimeB.whenC.thatD.which2.Was it on October 1,1949 _the PRC was founded?A.when B that C which D who3 It was not until midnight_he came to .A.that B before C when Dsince4.It was two in the morning _my son got up .A.when B that C which D who5_was 1996 _I graduated from the university.A. That,
23、that B It ;that C That ;when D It; when6.It is more than twenty years_China began to carry out the open-door policy.A. that B before C since D which7 It wont be long _your mother comes back from work.A since B after C.before D that8 It was only with the help of the local guide _.A.was the mountain c
24、limber rescued B. that the mountain climber was rescuedC.when the mountain climber was rescued D.then the mountain climber was rescued9 Why!I have nothing to confess ._you want me to say?A What is it that B What it is that C How is it that D How it is that 10 It was in this room_I once lived_we had
25、a meeting.A where, that B which ,that C where ,where D that .where11.It was in Indonesia, the UN officials believe,_the tsunani caused the greatest damage.A. where B. which C. when D.that 12.It was in the factory _produced TV sets _ our friend was murdered.A. which, which B. that, which C. that, tha
26、t D. where, that 13.It was last year _you taught me how to drive .A.when B.that C.where D.which 14.It was for this reason_her uncle moved out of New York and settled down in a small village.A.which B.why C.that D.how 15.I cant quite remember_he began teaching in our school.that, it was when B.when i
27、t was that C.when was it that D.that was it when 16.It is _who _wrong.we, am B. me, is C. I , am D.I , is 17.It is _he often fails in exams _ makes his parents worried about him.that, what B.because, that C. what, what D. that, that 18. It is you , rather than he ,that _for the accident. A.is to bla
28、me B.are to blame C.is to be blamed D. are to be blamed 19.-Where did you meet him? -It was in the park _ his wife and he first met.A. that B. where C. on which D. when20.-He was nearly drown once.-When was _ -_ was in 1998 when he was in middle school. A. that; It B. this; This C. this; It D. that;
29、 This21._ in the regulations that you should not tell other people the password of your e-mail account. A. What is required B. What requires C. It is required D. It requires22. Were all three people in the car injured in the accident No, _ only the two passengers _ got hurt Athey were; that Bthere w
30、as;who Cit was; who Dthere are; who 23.It was _ that I visited the Great Wall.A. many years B. years ago C. for many times D.years before24.It is_ since I visited the Great Wall.A. many years B. years ago C. for many times D.years before25. I hate _ when people ask me for money.Ait Bthat Cthese Dthe
31、m26. -Do you still remember _ you lost your wallet? -Yeah. It was at the crossing _ I got lost.Awhere was it/ that B. where it was that/that C. The place where/that D. where it was that/where27.I dont like working late into the night， but I cant help _. A. so B. that C. it D. them28.Well really catc
32、h _ from our teacher if were late for class again. A. it B. that C. so D. them Answers:1. I like _ in the autumn when the weather is clear and bright.A. this B. that C. it D. one2. He was nearly drowned once. When was_?_ was in 1998 when he was in middle school.A. that; It B. this; This C. this; It
33、D. that; This3. The Parkers bought a new house but _ will need a lot of work before they can move in.A. they B. it C. one D. which4. Someone is ringing the doorbell. Go and see_.A. who is he B. who he is C. who is it D. who it is5. In fact _ is a hard job for the police to keep order in an important
34、 football match.A. this B. that C. there D. it6. Mikes mother kept telling him that he should work hard, but _ didnt help.A. he B. it C. she D. which7. Since you have repaired my computer，_ is no need for me to buy a new one.A. it B. there C. this D. that8. The official made _ clear that he would do
35、 everything possible to solve the problem.A. it B. this C. that D. him9. Do you like _ here?Oh, yes, the air, the weather and the way of life. Everything is so nice.A. this B. there C. that D. it10. Bills aim is to inform the viewers that cigarette advertising in TV is illegal,_?A. isnt it B. is it
36、C. isnt he D. is he11._ is mentioned above， the number of the students in senior high school is increasing.A. which B. As C. That D. It12. It was with great joy _ he received the news that his lost daughter had been found.A. because B. which C. since D. that13. It was _ back home after the experimen
37、t.A. not until midnight did he go _ B. until midnight that he didnt goC. not until midnight that he went D. until midnight when he didnt go14. Why! I have nothing to confess. _ You want me to say?A. What is it that B. What it is that C. How is it that D. How it is that15. It is the ability to do the job _ matters not where you come from or what you are.A. one B. that C. what D. it
