This is a ___boy.He can't look after himself.A.four-years-old B four-years-olds C,four-year-old D four year old 一直分不清有连字符和没有连字符的区别

分类: 作业答案 • 2022-07-09 09:00:48

问题描述：

This is a ___boy.He can't look after himself.
A.four-years-old B four-years-olds C,four-year-old D four year old 一直分不清有连字符和没有连字符的区别

答

选C，这是一个复合形容词，其中的year不能用复数。

答

C 形容词, 形容boy
要么 He is four years old.
要么 four-year-old + 名词
其它表述是错的

答

选 C,four-year-old =four years old

答

c,有连字符year就不加S无连字符要加S