a

不定冠词,表示泛指某人或某物。

An unspecified example of (something); the indefinite article.

不定冠词(当后续词的首音不确定时)

A or an; the indefinite article (when the initial sound of what will follow is unclear).

一；用于 score、dozen、hundred、thousand、million 等前。

One; used before score, dozen, hundred, thousand, million, etc.

用于某些表示数量的短语,如 a few、a good many、a couple、a little、a bit 等。

Used in some phrases denoting quantity, such as a few, a good many, a couple, a little, a bit, etc.