“as” 用於引起定語從句

as 用於引起定語從句，多和such連用。

Such people as you decribe are rare nowadays.

你描繪的那種人如今很少見了。

Let's discuss only such question as concern everyone of us.

我們衹談與我們每人都有關的問題吧。

也可用在下麪這類句子中：

He oppose the idea, as could be expected.

正如可以預料到的，他反對這個意見。

有時和same連用：

I have the same trouble as you have.

我和你有同樣的睏難。