问题补充:
— Have you seen empty box?
— Do you mean box you showed to me yesterday? I put it in your schoolbag.
A. a, the
B. an, a
C. an, the
D. the, a
答案:
A. a, the
B. an, a
(答案→)C. an, the
D. the, a
解析:第一次提到某物时,用不定冠词,又根据empty 的第一个音标为元音音标,故选an,当第二次再提到该物时,用定冠词the ,故选C