中考代词语法专项讲解:it用法

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  编者按:代词是英语语法学习的一个重要知识点,掌握的好的话,它会对你有很大帮助。以下是小编分享的关于代词it的语法知识点,供大家参阅!

  代词it的基本用法讲解

  一.用作人称代词:

  1、指代事物:

  — What’s this?

  — It’s a cat.

  2、指代人:常用于不知对方性别时,比如:询问敲门人或打电话时询问对方是

  谁,或者用来指代婴儿。

  (1)—Who’s it?

  —It’s Sam.

  (2)—Who’s the baby in the picture?

  —It’s my younger brother.

  二、用作非人称代词:指代天气、时间、季节或距离等,此时的it无意义。

  (1)It’s two o’clock now.

  (2)It’s very cold in spring in the northern China.

  (3)It’s about 100 kilometers from our town to the big city.

  三、it可代替不定式,作形式主语、形式宾语

  (1)It is important to listen carefully in class.(形式主语)

  (2)I find it hard to learn English.(形式宾语)

  四、固定句式,现归纳如下:

  1. It's time for sb. to do sth. / It's time for sth.

  意为"是(某人)该干……的时间了"、"到……的时候了"。

  例如:It's time for supper /to have supper.该吃晚饭了。

  It's time for me to study.我该学习了。

  2. It takes (sb.) some time to do sth.意为"(某人)花……时间做某事"。

  例如: It takes twenty minutes to go to school by bike.骑自行车上学要花二十分钟的时间。

  It took me a week to finish reading the book. 我花了一周时间读完这本书。

  3. It is one's turn to do sth.意为"轮到某人做某事了"。

  例如:It's your turn to be on duty tomorrow. 明天轮到你值日了。

  4. It is / has been +时间段+since +一般过去时,意为"自从……以来已过

  了……(时间)。"

  例如:1. It is / has been four days since I caught acold. 我感冒已四天了。

  5. It's+adj.+of(for)sb.+to do sth.。

  对于这个句型究竟用of还是用for,主要取决于前面的形容词。

  如果形容词是描述不定式行为者的性格、品质等的,如 kind,good,nice,clever等用of;

  如果形容词仅仅是描述行为的则用for,这类形容词常见的有difficult,easy,hard, important,dangerous等。

  例如:1. It is nice of you to come to see me.你能来看我真好。

  五.代词 it, one, that区分

  1.It 指前文中出现的同一事物。

  I have a red hat, and I like it very much.

  2. one 指前文中出现的同类事物,但并不是同一个。或是从前面的一类中选一个。即可指人,也可指物。

  Your red hat is nice,I want to buy one.

  There are some cakes on the table, you can take one.

  3. that 指前文出现的同类事物,只可代替物,不可替代人

  The air in the country is fresher than that in the city.

作者|Sunny

  公众号:初中英语语法知识点同步讲解

  本文为原创文章,版权归作者所有,未经授权不得转载!


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