四岁怎么写英语怎么写

four years old 意为四岁；

例句

Young children are beginning their formal education sometimes as early as four years old.

幼儿有时早在四岁时就开始接受正规教育。

My Chrysler is four years old.

我的克莱斯勒是四年前买的。

She is thirty-four years old.

她三十四岁。

I am four years old and growing tired.

那年我四岁，还在等待成长的考验。

They are switching off at four years old and never switching on again.

他们要是在四岁这个年龄段即关闭了学习的兴趣，那就决不会再开启了。