Peter is a three years old boy.
Peter is a three-year-old boy.
The boy which is three years old is Peter.
初一英语翻译,谁做出来我跟他姓翻译:彼得是一个三岁的男孩.多写几种翻译
Peter is a three years old boy.
Peter is a three-year-old boy.
The boy which is three years old is Peter.