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课本中不会教你的[A]68 as用法难点

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2018年08月20日

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68 as用法难点

① as用作介词。

(1)表示“作为,充当”。

As a young man,you should work hard. 作为年轻人,你应该努力工作。

This room is used as a reading room. 这间屋子被用作阅览室。

(2)表示“像,如同”,后跟名词或代词。

Her mother still treats her as a baby. 她母亲仍然把她像小孩子一样对待。

We should unite as one man. 我们应该团结得如同一人。

② as用作连词。

(1)引导时间状语从句,表示“当……的时候”,强调两个动作同时发生,或者一个动作紧随另一个动作发生。

As I was leaving,the teacher saw me. 当我离开时,老师看到了我。

As they talked,they listened to the music. 他们一边谈话,一边听音乐。

(2)引导原因状语从句,表示“因为”,相当于because。

I don't go downtown very often,as I am busy with my lessons. 我不常进城,因为我功课很忙。

As it rained hard that day,they put off the meeting. 由于那天下大雨,他们取消了那次会议。

(3)引导方式状语从句,表示“如同,像”。

He speaks English just as Englishmen do. 他说英语就像英国人说英语一样。

She studies as others do. 她像别人一样地学习。

She's a writer,as her mother used to be. 她像母亲以前一样是一位作家。

(4)在as…as,as…as possible等结构中引导比较状语。as…as 还表示“和……一样”,not so/as…as表示“不如,不及”。

I'll finish the work as soon as I can. 我将尽早完成这项工作。

Please come as early as possible. 请尽量早来。(=Please come as early as you can.)

David plays football as well as Frank. 大卫足球踢得和弗兰克一样好。

She seems as busy as she used to be. 她好像和以前一样忙。

It is not so simple as it sounds. 这不像听上去那样简单。

(5)引导让步状语从句,表示“虽然,尽管”,但要用倒装结构。

Child as he is,he knows a lot of things. 他虽然是个孩子,但知道许多事情。(注意,这种倒装结构中的名词前不用冠词,不可说A child as he is或The child as he is。)

Clever as he is,he can't do it. 尽管他很聪明,也做不了这事。

Much as she admired him,she didn't love him. 尽管她很钦佩他,但并不爱他。

比较

Hard as he tried,he didn't succeed. 他虽然非常努力,但没有成功。(让步状语从句)

As he tried hard,he succeeded. 由于他非常努力,他成功了。(原因状语从句)

③ as用作关系代词,表示“像……一样,正如……一样”,常用于as is known(众所周知),以及as is known to all(众所周知),the same as(如同……一样),as follows(如下)结构中。

He wears the same shoes as his father does. 他穿的鞋同他父亲穿的一样。

As is known to all,China has made great progress. 众所周知,中国已经取得了巨大进步。

This dictionary is not such as I expect. 这不是我所期望的词典。(as引导从句修饰such)

As he said,we could not finish the work on time. 正如他所说的,我们不能按时完成工作。

The machine,as had been expected,has gone wrong. 正如预料的那样,这台机器出毛病了。

比较

Three days ago I lost the same watch as you have. 三天前,我丢了一块像你一样的手表。(手表款式相同,但不是同一块表)

Three days ago I lost the same watch that you have. 三天前,我丢的就是你现在的这块手表。(为同一块手表)

提示

such as作“例如”解时,用于对前面所说的事物作进一步的举例说明,所列的项目不可全部列出。

Some big cities in China,such as Nanjing,Xi'an and Hangzhou,are famous for their scenic spots. 中国的一些大城市,如南京、西安和杭州,都以风景名胜而著称。

He has been to a lot of countries,such as Japan,England and France. 他到过许多国家,如日本、英国和法国。


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