grammar it用法.ppt

1、Grammar,4,It的用法,代词 人称代词: 相当于指示代词 this, that 用于非人称代词，表示时间、日期、地点、天气、温度、距离、环境等。 2. 引导词 用作形式主语 用作形式宾语 用于强调句式 3. 固定句型和习语中的it,一、代词： Who is _? _ is me. Youve helped me a lot; Ill never forget _. I heard there was still an English- English dictionary in the bookstore. Go and buy _ as soon as possible. one B

2、. it C. this D. another -Who broke the window? - _ is me. A. This B. That C. It D. Which,it,It,it,代词：代指前文提到的事物；代指距离等,Its two miles from the school to our home,二、 引导词： 1. It is said that (known, reported, believed, hoped, thought，decided) It is known to us that a very important meeting is being held

3、in our school,2. It seems / appears / happens that It appears that every student is polite to teachers. It happened that Li Lei was not polite that day,3. It is + n. + that 1) It is a fact that English is being spoken all over the world. 2）It is our hope that we can have a long holiday,4. It is no g

4、ood / use / a waste of time doing sth. It is to do sth. It is no use crying over spilt milk. Its a waste of time reading novels now. It is easy to buy a new computer now,形式主语,二、引导词 1. it 指代一句话。 I hate it when people talk with their mouths full. I like it in the autumn when the weather is clear and b

5、right. Id appreciate it if you would like to teach me how to use the computer,2. it 指代不定式 I think it my duty to help you. I dont think it possible to master a foreign language without much memory work,形式宾语,It is/was+被强调成分+that+句子其他部分,强调句型,有时态变化,通常为主语、宾语、表语和状语,被强调部分为人时，可以用who,去掉it is that句子仍然完整,陈述句,一

6、般疑问,特殊疑问,我是在街上遇见她的父亲的。 2. 正是因为她病了，他们才没让她做这项工作,It was in the street that I met her father,I met her father in the street,强调句型的陈述句,It was because she was ill that they didnt ask her to do the job,强调句型的一般疑问句,It was by the time he was fourteen that Einstein had already taught himself advanced mathematic

7、s,It was Einstein that had already taught himself advanced mathematics,Was it by the time he was fourteen that Einstein had,Was it Einstein that had already,强调句型的特殊疑问句,It was in this way that he could finish the work so quickly,It was the long low whistle that she would hear at night. What,It was af

8、ter being beaten for six times that he and his men drove the English out of Scotland,_ was it that he could finish,_ was it that she would hear,_was it that he and his men drove,How,What,When,强调句型的特殊疑问句,Where did you buy the book,What made the little boy so angry,I dont know what made the little boy

9、 so angry,Where was it that you bought the book,What was it that made the little boy so angry,I dont know what it was that made the little boy so angry,宾语从句中的强调句型,难点： I did not go to bed until midnight,It was not until midnight that I went to bed,2. It is no good smoking,3. It is likely that he will

10、 succeed,真正主语,真正主语,形式主语,形式主语,真正主语,形式主语,_ is bad,To smoke,_ is no good,Smoking,_is likely,That he will succeed,1. It is bad to smoke,Complete the sentence,PRACTICE,1. 努力学习英语很必要。 It is necessary to work hard on English. 对于我们来说，努力学习英语很必要。 It is necessary _us to work hard on English,for,2. 你把真相说出来了，真诚实。

11、 It is honest _you to tell me the truth,of,To work hard on English is necessary for us,You are honest to tell me the truth,1. It was in this way that he could finish the work so quickly,2. It is I that is completely right,3. It was after being beaten for six times that he and his men drove the Engli

12、sh out of Scotland,4. It is then that the new type of camera was developed,5. It were my classmates that helped me whenever I was in trouble,6. It was this hotel that we stayed last night,Judge,am,was,was,at,1. It was not until she got home_ Jennifer realized she had lost her keys. (2006全国II） A. whe

13、n B. that C. where D. before,2. It was after he got what he had desired _ he realized it was not so important.(2006 辽宁） A. that B. when C. since D. as,3. It _ we had stayed together for a couple of weeks _ I found we had a lot in common.(07) was until; when B. was until; that C. wasnt until when D.

14、wasnt until; that,B,A,D,4. -Where did you get to know her? -It was on the farm _ we worked.(07 山东） A. that B. there C. which D. where,5. I dont know _ it was _ prevented him from attending the meeting,the reason/ B. whybecause C. whatthat D. why,D,C,6. His parents always warned him not to play games

15、 for a long time, but didnt help at all. A. what B. which C. it D. as 7. _is no good quarrelling with your parents. It will only hurt one anothers feeling. A. It B. There C. ThisD. That 8. _makes no difference whether you attend the party or not. My task is to tell you when it will be held. A. As B.

16、 It C. This D. One,C,A,B,9. The manager didnt make clear at the last meeting when and where the project would be carried out. A. this B. that C. theseD. it 10. I think an honour to work with a group of scientists who have worked to improve food safety for so many years. A. it B. that C. one D. there

17、,D,A,一些固定句型 1) It is 段时间 since. 2) It will be 段时间 before 3) It is/was 点时间 when 4) It is the first time that have/has done,What was the party like？ Wonderful！Its been years _I enjoyed myself so much 2. It will be 3 years _we meet again.3. It will be midnight _they get there .A. after B. when C. befor

18、e D. since,D,C,B,1. It is （high） time that we _ to school.A. go B. went C. have been D. have gone 2. It is the second time that we _ to Beijing.A. go B. went C. have been D. have gone,It + is +(high / about/really) time + that从句 It / This / That +is +the first (second , third ) time + that从句,一些固定句型,用于某些习语,make it 及时赶到；成功；办成 e.g. You can make it if you hurry. You neednt worry; he will make it,如果你赶快还可以及时赶到,你不必担心，他会办到的,catch it 被责骂；受处罚,e.g. I