AS用法总结(2)

二、用作介词的as

1.表示“如，像”。例如：They got united as one man./She spoke of me as her dearest friend.

2.表示“作为、当作”。例如：As a League member, you should think more of others.

3.与某些动词搭配，表示“把……当作……”，如：look on…as…, regard…as…, treat…as…, consider…as…, think of…as…, see…as…等。其中consider…as…中的as可以省略。as与famous或known搭配，表示“作为……而出名”。

例5 Linda worked for the Minnesota Manufacturing and Mining Company, ________ as 3M.

A. knowingB. known C. being knownD. to be known

解析：如果熟悉be known as这一短语，运用有关非谓语动词的常识，可选出正确答案B。

三、用作关系代词的as

1. 引导限制性定语从句，先行词前通常有as, so, such, same等修饰语。例如：He will marry as pretty a girl as he can find./My hometown is no longer the same as it used to be./As many people as are present will be given a present.在此种用法中，同学们要注意与结果状语从句的区别。比如：A: The teacher asked us such a difficult question that none of us could answer it. B: The teacher asked us such a difficult question as none of us could answer.A句为结果状语从句，而B句则是定语从句。

2. 引导非限制性定语从句，用来指代整个主句（即先行句），表示“这一事实，那一情况”。从句可以位于句首、句中或句末。例如：We stand when the national anthem is played, as is the custom.

例6 ______ I explained on the telephone, your request will be considered at the next meeting.

A. When B. After C. As D. Since

解析：根据句意，选项C是正确答案。as表现的正是本点所讲用法。

四、用作副词的as

修饰形容词或副词，表示程度，意为“同样地”。例如：He swims fast, but I swim just as fast. 但它通常构成表示比较的结构“as as ”，“not as as ”。此结构中第一个as是副词，第二个as是连词。否定结构中的副词as可以由so代替。as as possible /one can也属于此用法。例如：It is generally believed that teaching is as much an art as it is a science.

五、用在习语中的as

由as构成的习语很多，常见的有：as soon as “一 就”，引导时间状语从句；as/so long as “只要”引导条件状语从句；as if/though “好像，仿佛”，引导方式状语从句或表语从句；as to/ as for “至于，就 而言”；as much/many as“多达 ”；as/so far as “就 的限度”；as a result，as a result of “（由于 的）结果”；as a matter of fact“事实上”；as well “也、还”；A as well as B“不但A而且B”；as it is“照现状看，看样子”，等等。这些习语在高考中可能经常遇到，在高考题中有的作为正确选项，有的作为干扰项，有的出现在题干，值得同学们认真掌握。例如：