试题:
Peter is a _______boy. His younger brother is _______.
A.ten-years-old ; six years old B.ten years old ; six years old
C.ten years old: .six-years-oldD.ten-year-old ; six years old

答案:

我来补答
D
第一空ten-year-old是复合形容词,表示“十岁的”,三个词之间有连字符,名词用单数。第二空做表语,不用连字符,名词用复数。
 
 
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这些题目你会做吗?