they put on (a;an;the;\)one-act play

they put on (a;an;the;\)one-act play
they put on (a;an;the;\)one-act play

they put on (a;an;the;\)one-act play
选A
整句翻译为:他们上演了一场独幕剧.
one 音标 [wʌn]
要判断不定冠词用a还是an,应该看后面的词的音标是元音字母开头还是辅音字母.
one虽然是元音字母o开头,但它的音标并不是元音字母开头,而是辅音字母w.
所以用a,
又如honest,音标:['ɔnist],虽然honest是辅音字母h开头,但它的音标是 ɔ 开头,所以在它前面+an
an honest child 一个诚实的孩子

a