舉例：

　　1.大約；左右

　　It costs about $10.這大約要花10元錢。

　　2.關(guān)于；對于

　　Tell me all about it.把這件事全部告訴我。

　　3.目的是；為了；涉及…方面

　　What was all that about?這到底是怎么回事?

　　4.忙于；從事于

　　Everywhere people were going about their daily business.無論哪里人們都在忙著干日常工作。

　　5.將近；幾乎

　　I'm just about ready.我就要準備好了。