a [ə]以下由轻松背单词网站提供
单词级别第1级基本释义art.一(个);每一(个)英英释义used before a noun to refer to a single thing or person that has not been mentioned before, especially when you are not referring to a particular thing or person , or you do not expect listeners or readers to know which particular thing or person you are referring to参考例句He gives me a book.他给我一本书。She is a girl.她是一个女孩。 推荐阅读 |