2009届高考英语词汇大串讲(最新最全) an art. 一(个 ,件……) 1. 用于辅音音素起首的词前: an old man, an honest boy, an hour, an honor... 2). 用于辅音音素起首的词前:a pen, a university, a useful book... ability n. 1. special natural power to do sth. well 才能;才干 2. power or skill to do, to think, to a