问题
选择题
The ________boy is playing chess with his grandfather.
A．8-years-old
B．8 years old
C．8-year-old
D．8 year old
答案
答案：C
题目分析：句意：那个8岁的男孩正在和他的祖父下象棋。这里空格后有名词，所以这里需用的是复合形容词作定语。其结构是数词—名词的单数—形容词。8 years old不能作定语。故选C。