Question

【题目】—Peter，did you hear of___________ boy called Tom?

—Certainly. He's my cousin. Why?

A.a eight-year-oldB.a eight-years-oldC.an eight-year-old

Answer 1

【答案】C

【解析】

句意：Peter，你听说过一个叫Tom的八岁的男孩吗？—当然了，他是我的表兄（弟），怎么了？

“数词+连字符+可数名词单数”可以修饰名词，作定语，排除B，eight是以元音音素开头的单词，所以用an，排除A，an eight-year-old意为“一个八岁大的”，故答案选C。