明天是我的生日，那时我就七岁了。

It's my birthday tomorrow. I'll be seven then.

youdao

汤姆已经七岁了，他能够自己穿衣服。

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

youdao

我七岁了。这是我在家时的一幅家庭照。

I am seven. This is a picture of my family at home.

youdao

Well, I started playing baseball when I was really young, about...I think I was seven years old,

我很小的时候就开始打棒球了，大概是……，我想那时候我大概七岁吧，

会打棒球吗？ - SpeakingMax英语口语达人