重 点
An is used instead of "a," the indefinite article, in front of words that begin with vowel sounds. 代替不定冠词(a)，用在元音字母开头的词之前
article [不定冠词] 一个（用于元音前）
This recipe is an adaptation of an old favourite. 这个食谱是一个传统名食谱的改编。
article [不定冠词] art. 一（在元音音素前）
The exam consists of an essay and an unseen translation. 考试包括一篇作文和一篇即席翻译。
