it 的用法与练习it 的用法是高考中常见的考查热点之一。下面我们就对 it 的用法作简要归纳和分析。一、它，指提到过的或正在谈论的动物或事物,（used to refer to an animal or a thing that has already been mentioned or that is being talked about now）。例如： What color is your bike? It is green. What's this? It's a book.二、指婴儿，尤指性别不详者。（used to refer to a baby ,especially one whose sex is not known）。例如： What a beautiful baby! Is it a boy? Who is knocking the door? I think it is John.三、指已知或正在发生的事实或情况。（used to refer to a fact or situation that is already known or happening）例如： When the factory closes ,it will mean 600 people losing their jobs. 四、it 可以代替 Ved/Ving/从句用作形式主语或形式宾语,而真正的主语或宾语在句末。（used in the position of the subject or object of a verb when the real subject or object is at the end of the sentence）。例如：It is impossible to finish the work by the end of 2008.It is no use arguing with him.The chairman thought it necessary to invite Professor Smith to speak at the meeting.(2005 全国卷 1)It is reported that talks between the two countries are making progress.五、谈论时间、日期、距离、天气等时用作主语（used in the position of the subject of a verb when you are talking about time, the date, distance, the weather, etc.）。例如： －Did Jack come back early last night ? －It was not yet eight o'clock when he arrived home.(2005 福建卷) It is very cold outside. You'd better put on your coat. It is 100 kilometers from our school to the station.六、谈论情况时用（used when you are talking about a situation）。例如：If it is convenient, I will come tomorrow. I like it here.七、用于强调句型中。 强调句的结构为 It is/was ＋被强调部分＋who/that+句子其余部分。此句型用于强...
