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1、IT 用法和强调句1. 指提到的事物: Dongguan is a beautiful city, isnt it? Is this your dog？No, it isnt . He is ill. Its why he is absent. I hate it that hes so lazy . 2. 指婴儿或人 (未知性别): Who is the baby？Its me. Someone is knocking at the door.Who is it?一、it 作人称代词1. 指天气： 2. It is sunny today, isnt it? 2. 指时间: It was 1
2、0 oclock when she came back. Its Novembr 30 , 2009. 3. 指距离： It is an hours walk/ride from my home to the school. 4. 指环境: It was very quiet in the caf. 5. 指度量： It is about 5 kilograms. 6. 指价值： Whats the price of the book? It is 20 yuan.二、it作非人称代词 三、it用作形式主语1. It is +adj/n+ (for sb.) to do sth.doing s
3、ththat 从句 It is important (for us) to learn English. It is wrong for us to tell a lie Its no use/no good/no help arguing about it. It is no good smoking too much. It is very clear that he isnt telling the truth. It is a pity that he cant come to my birthday party.It is said (reported/ believed/known
4、/told/hoped)+ that 从句据说（据报道） It is said that China will send up another satellite into space. =China is said to send up another satellite into space. It was reported that thousands of people had died in the accident.= Thousands of people was reported to have died in the accident It is well known tha
5、t Chinese team have won the volley match. = Chinese team is well known to have won the volley match.2. It is +v-ed (said) + that 从句=sb is +v.ed (said) + to do sth3. It +vi. ( seems / appears / happens) + that从句 =sb +vi.(seems / appears / happens ) +to do sthIt seems that he enjoys pop songs very muc
6、h. =He seems to enjoy pop songs very much It appeared that Tom had changed his mind. = Tom appeared to have changed his mind. It happened that I met my old friend on the street. = I happened to meet my old friend on the street.四、it作形式宾语 动词有think, believe, make, find, consider, feel等。 V+ it + adj/n +
7、(for sb) to do sthdoing sththat 从句 I think it important (for us) to learn English.= I think that it is important (for us) to learn English I believe it no good smoking too much. = I believe (that) it is no good smoking too much. I feel it a pity that he cant come to my birthday party. =I feel that i
8、t is a pity that he cant come to my birthday party.五、用于强调句型中It is(was)+ 被强调成分 + that从句(人) (who)( (被强调成分被强调成分: :主语，宾语，状语主语，宾语，状语) ) 一般疑问句：Is +it +被强调成分 +that从句？ 特殊疑问句：特殊疑问词 +is it +that从句? 从句：引导词+ it is+ that从句I met Tom in the park yesterday.1) It was I who met Tom in the park yesterday.2) It was Tom
9、 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.强调主语强调宾语强调地点状语强调时间状语1. 我是在街上遇见我的父亲的。(强调在街上) 2. It was in the street that I met my father. 3. Was it in the street that you met your father? 4. Where was it that you met yo
10、ur father? He told me where it was that he met his father.2. 你是8点开始工作的吗？（强调时间） Was it at eight oclock that you began to work ? It was at eight oclock that I began to work. When was it that you began to work ? Can you tell me when it was that you began to work ?3. 正是因为她病了，他们才没叫她做这项工作。 （强调原因） Because
11、she was ill, they didnt ask her to do the job. It was because she was ill that they didnt ask her to do the job. Was it because she was ill that they didnt ask her to do the job? Why was it that they didnt ask her to do the job?4. 他为什么不能回答这个问题？Why was it that he couldnt answer the question.六、几种句型区别1
12、) 强调句型：It is(was)+ 被强调成分+ that从句It was in the street that I met my father.It was at eight oclock that I began to work. 2)定语从句 It was the street where I met my father. It was eight oclock when I began to work. 3) since句型 “自从”It is+一段时间 +since从句（did）It was+一段时间 +since从句（had done）It is two hours since
13、he came back.He said it was two hours since he had come back.4) before句型 “过多长时间才” It will be+一段时间 + before从句(do/does) It was+一段时间 + before从句(did) It was two hours before he came back. It will be two hours before he comes back.5）“第几次”句型It is +第几次+ that从句(have done) 是第几次干It was +第几次+ that从句(had done)I
14、t is the first time that I have come to Beijing.He said that it was the first time that I had come to Beijing.not . until . 的强调形式: It is not until + 被强调部分 + that . “直到才” 主要用于强调时间状语的强调句型。 I didnt realize she was a famous film star until she took off her dark glasses. Not until she took off her dark g
15、lasses did I realize she was a famous film star. It was not until she took off her dark glasses that I realized she was a famous film star.Exercises:1.Fill in the blanks1. Is _necessary _(complete) the design before National Day? 2_is no good _ (drink) too much.3. Toms mother kept telling him that h
16、e should work harder, but _ didnt help. 4. _is a fact _ English is being accepted as an international language. 5. I hate _when people talk with their mouths full. itto completeItItdrinkingit Itthatit6. I like _ in the autumn when the weather is clear . 7. It happened _ he was unfit for the office. 8. He happened _ _unfit for the office. 9. I thin
