高考常見詞ａｓ用法總結

近幾年高考試卷中有關as一詞的題目出現過很多次，其中as或是最佳選項，或是干擾項，或是題干中的關鍵信息點，涉及到as作為連詞、介詞、關系代詞、副詞以及習語等各種用法。現結合高考真題將as的用法歸納如下：

一、用作連詞的as

1. 引導時間狀語從句，表示“當……的時候”，其用法與when和while類似。例如：As a child (When he was a child)， she was sent to six different schools.此用法中as多表示從句與主句動作同時進行，意為“一邊……一邊……”，一般不與狀態動詞連用。例如：She sang songs as she did her homework.

as 還可以表示一動作緊接著另一動作發生，說明另一動作的結果，有“隨著……”的含義。例如：As time went by， we found he was an honest man./As he grew older， he lost interest in everything except gardening.

例1 It wasn’t until nearly a month later________ I received the manager’s reply.

A. since B. when C. as D. that

解析：本題的as中與when一起作為干擾項，容易使考生往時間狀語從句上思考，事實上本題是強調句，正確選項是D。

2.引導原因狀語從句，表示“由于，因為”，相當于because， 但通常置于句首。例如：

As he is a qualified doctor， I trust his advice on medical matters.

例2 _____ modeling business is by no means easy to get into， the good model will always be in demand.

A. While B. SinceC. AsD. If

解析：本題中as干擾性很強，很多考生誤以為是原因狀語從句，但仔細分析不難發現正確答案應是A（while表示“只要”）。

3.引導讓步狀語從句，通常可與although或though通用，但語序不同，although或though用于句首，as用于倒裝結構。例如：Young as I am， I already know what career I want to follow. /Although（或Though）I am young， I already know what career I want to follow.

as 表示讓步用于倒裝結構，通常將從句的表語、狀語或動詞前置。如果表語有冠詞a/an， 需去掉。例如：Great scholar as he is， he is lacking in common sense./Much as I like you， I couldn’t live with you./Try as he would， he couldn’t open the door.

例3 _____ he has limited technical knowledge， the older worker has a lot of experience.

A. SinceB. Unless C. AsD. Although

解析：as 雖然有引導讓步狀語從句用法，但本題不是倒裝結構，故正確答案應是D。

4.引導方式狀語從句，表示“如，像”。例如：When in Rome， do as Romans do./Do to others as you would have others do to you.

例4 We wanted to get home before dark， but it didn’t quite ________ as planned.

A. make outB. turn out C. go onD. come up

解析：本題考查動詞詞組辨析，題干中的“as planned”給同學們提供了重要信息，答案選B。

5.固定句型：“主句，as +be/do+主語”表示“也一樣”。例如：She’s unusually tall， as are both her parents./He’s a doctor， as was his wife before she had children.

二、用作介詞的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“作為、當作”。例如：As a League member， you should think more of others./After graduating from the college， he firstly worked as a clerk in a big company.

3.與某些動詞搭配，表示“把……當作……”，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。