four years old 是时间点还是时间段

four years old 是时间点还是时间段 Four Years Old 歌词 英语翻译还有,“他四岁”是说he is four years old还是he is four year old? 请问:是a four years old boy?还是a four year old boy?正确要肯定的 He is only four years old.是什么意思? only four years old的意思 my four years‘ old son 哪里不对 She was four years old when she began to lean the accordion 对话线部分提问划线的是four years old This____girl is so lovely.A.four years old B.four-years-girl C.four-year-old D.six-months-old 时间状语从句中,例如Mozart started writing music when he was four years old.中.主句是什么? 请教语法知识,he is four years old!he is four years old,这句话中four years 是什么成分?可否理解为修饰形容词old的状语? Mozart started writing music when he was four years old.以上是一个when引导的时间状语从句,请问这个状语从句修饰主句中的哪个词?麻烦分析一下句子结构? My ____brother is four years ___than me.(old) He could speak English when he was four years old. my is sister four old years连词成句 ( )your brother swim when he was four years old?CanCouldDoDoes I started English when I was four years old句型 同义句转换：My son is four years old