it的用法练习.docx

1、it的用法练习It 用法（1）1 用作人称代词，代替前文提到过的事物。如:The train has arrived. It arrived half an hour ago.2 用以代替指示代词this, that。如: Whose watch is that? Its mine. 3 起指示代词的作用，指一个人或事物。如: Who is knocking at the door? Its me. 4 指环境、情况等。如: It was very noisy (quiet) at the very moment. 5 指时间、季节等。如: What time is it? Its eight

2、 oclock. 6 指距离。如: It is only five miles from here to the hospital. 7 指自然现象（天气、气候、明暗等）。如: Its getting cold (dark, late, etc.). 8. 作形式主语。 it替代作主语的动词不定式的常见句型为：It is + 形容词(+ of / for sb.) + to do sth.。 如： It is brave of her to go home alone at night. It is important for us to learn English well. it替代作主语

3、的动词-ing形式的常见句型为： It is no use / good + doing sth. Its (well) worth doing sth.。 如：Its no use talking to him about it. it替代作主语的从句的常见句型为： （1）It is + 名词 + 从句。 It is no wonder / a pity / a shame + that . (难怪/真可惜/真可耻)。如： It is no wonder that she was so angry. （2）It is + 形容词 + 从句。 如： It is natural that he

4、（should） say so.（3）It is + 过去分词 + that .，能用于这个句型的动词有say, report, think, believe, hope, expect等。如： It is reported that the road was closed. 9. 作形式宾语。 it替代作宾语的动词不定式的常见形式为：动词+ it +形容词/名词+动词不定式。如： I found it possible to do this regularly. it替代作宾语的动词-ing 形式的常见形式为：动词+ it +形容词/名词+动词-ing形式。如： She thought it

5、 no good worrying about him. it替代作宾语的从句的常见形式为：动词+ it +形容词/名词+从句。如：He has got to make it clear that his family is very poor. 在某些特殊句式中，it 指代when从句或者if从句。如： I dont like it when people talk with the mouth full of food. Id appreciate it if you can help me to solve this problem.练一练 从A、B、C、D四个选项中，选出可以填入空白处

6、的最佳选项。1. He got his first book published. It turned out to be a bestseller. When was _?_ was in 2000 when he was still in college. (浙江2007)A. that; This B. this; It C. it; This D. that; It 2. There is still a copy of the book in the library. Will you go and borrow _? No, Id rather buy _ in the books

7、tore.(陕西2007)A. it; one B. one; one C. one; it D. it; it3. _ is our belief that improvements in health care will lead to a stronger, more prosperous economy. (浙江2006)A. As B. That C. This D. It4. It is no _ arguing with Bill because he will never change his mind. (2006全国卷II)A. use B. help C. time D.

8、 way5. _ in the regulations that you should not tell other people the password of your e-mail account.(上海2005)A. What is required B. What requires C. It is required D. It requires6. He hasnt slept at all for three days. _ he is tired out. (湖北2005)A. There is no point B. There is no need C. It is no

9、wonder D. It is no wayKey: 1-3 DAD 4-6 ACCIt 用法（2）本单元我们主要正确理解和掌握it构成强调句型的用法。【例句呈现】请观察以下六组句子，注意归纳it构成强调句型的用法特征。1. A. It was between 1996 and 2006 that great changes took place in our hometown.B. It was Professor Smith who gave us some advice on how to learn English well.2. A. Was it because of his il

10、lness that he didnt go to the cinema?B. Is it your brother who wants to join the army after graduation?3. A. When was it that the Second World War broke out?B. What is it that your brother is most interested in?4. A. It was not until yesterday that I heard about it.B. It was not until she took off h

11、er glasses that I realized she was a famous film star.5. A. It is simply because I like it that I do it.B. It is what you do rather than what you say that matters.6. A. It must be Peter who has told you the news.B. It might be for this reason that he has changed his mind.【用法小结】 从上面的六组句子中，我们可以归纳出it构成

12、强调句型的基本用法：1 强调句型的基本句式是“It is / was + 被强调部分 + that / who + 句子的其余部分”，它可以对句中除谓语动词以外的成分加以强调。如：第一组例句2. 从第二组例句可以看出，强调句型的一般疑问句形式是：Is / Was it + 被强调部分 + that / who + 句子的其余部分；3. 从第三组例句可以看出，强调句型的特殊疑问句形式是：疑问词 + is / was it that + 句子的其余部分；4. 从第四组例句可以看出，如果被强调的是not . until .引导的时间状语（从句），用“It is / was not until . t

13、hat .”结构，此时not until不能分开；5. 从第五组例句可以看出，强调句型也可强调状语从句、名词性从句等比较复杂的内容；6. 从第六组例句可以看出，强调句型中，be前可使用表示推测的情态动词。【特别提示】1. 强调时间、地点、原因状语时，不能使用when, where, why代替that。It was in front of the post office that the traffic accident happened.It was about 600 years ago that the first clock with a face and an hour hand w

14、as made.2. 强调主语时，谓语动词应与之保持一致。如：It is I who am to go there together with you.It was Mike and Mary who were praised at the meeting last night.3. 强调主语或宾语且其为人称代词时，应注意其形式仍用主格或宾格形式。It was she who showed me to the headmasters office.It was her that the headmaster shook hands with yesterday.4. 学会判断强调句型：一般来说

15、，如果将一个句子中的强调结构it is / was . that去掉，剩下的成分仍然能组成一个完整的句子，这个句子就使用了强调句型，否则就不是。A. It was on October 1, 1949 that the PRC was founded. B. It was October 1, 1949 when PRC was founded.（A句是强调句型，去掉强调结构后，句子The PRC was founded on October 1, 1949仍然完整；B句不是强调句型。）【操练园地】1. It was in New Zealand _ Elizabeth first met Mr. Smith. （2008全国II）A. that B. how C. which D. when2. It was along the Mississippi River _ Mark Twain spent much of his childhood.（天津2008）A. how B. which C. that D. where3. It wa