问题补充:
Tom isn’t a boy. He is an boy.
A. Chinese; Chinese
B. English; Chinese
C. English; English
D. Chinese; English
答案:
A. Chinese; Chinese
B. English; Chinese
C. English; English
(答案→)D. Chinese; English
解析:在元音音素前用an,在辅音音素前用a,Chinese第一个音是辅音,English第一个音是元音,故选D。