at three years old表达对吗

问题描述:

at three years old表达对吗

我可以很负责任地告诉您:可以!有一文章“ Did you know at 3 years old I can" 只有在写成 3-year-old的时候不用复数,单个词摆开的写法是要用复数的.再告诉你你一个方法:试着用自己的问题去google 一下英文网页,就...