He is seven years old.

他今年七岁。

youdao

Tom is a little boy, and he is only seven years old.

汤姆是个小孩，他才7岁。

youdao

Tom is seven years old, and he (is able to) dress himself.

汤姆已经七岁了，他能够自己穿衣服。

youdao

Tom is seven years old, and he (is able to) dress himself.

汤姆已经七岁了，他能够自己穿衣服。

youdao