awhile

ad. 片刻, 一会儿

a.while

adv.（副词）
For a short time.
片刻，少顷，暂时

Awhile, an adverb, is never preceded by a preposition such as for, but the two-word forma while may be preceded by a preposition. In writing, each of the following is acceptable:stay awhile; stay for a while; stay a while (but not stay for awhile ).
Awhile 作为副词从不置于介词，如 for 之后， 但介词可放在两个词组成的a while 之前。 在书面语中，以下几种写法都是可以接受的：stay awhile；stay for a while；stay a while （但是不能写成 stay for awhile ）