请教five-year-old和five years' old这类有关的,带-的复合名词的用法?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/17 21:09:57

请教five-year-old和five years' old这类有关的,带-的复合名词的用法?
为什么五小时的睡眠可以用six hours‘ sleep或者six-hour sleep,后者hour和sleep中间为什么可以不加-?

five-year-old 是复合形容词只能作前置定语,用于修饰名词
eg.She is a five-year-old girl.
five years old 用来作表语.
eg.She is five years old.
六小时的睡眠可以有两种表达法;
six hours' sleep 这个用法相当于名词所有格
six-hour sleep ,six-hour 作sleep 的定语 ,所修饰的名词前不加 -.

请教five-year-old和five years' old这类有关的,带-的复合名词的用法? five years old 和five-year-old的区别 a five-year-old boy与the boy is five years old的区别 five-year=old和five years old用法有什么区别啊 years old 和year-old的区别和用法 five years old与five-year-old区别是FIVE YEAR OLD还是FIVE YEARS OLD year-old和years old的区别 five years before 用法和five years ago的区别 Five years old Five - years- old two years old与two-year-old的用法区别 when we are five years old的英语翻译