Question

a-merte-long加连字符和不加连字符的用法和区别

Answer 1

一般我们说某物一米长,不加-,但是当我们想把"一米长"当作某被修饰的名词的定语来用时,就需要加-来构成复合形容词,此时要注意,符合形容词中的可数名词(如这里的metre)只能用单数形式!

例如:

The ruler is only a metre long 对比 I have one a-metre-long ruler.

She has a daughter who is only eight years old.对比 She has an eight-year-old daughter.