When I was old enough, I discovered that his name was not actually Dad, but Richard, and that my middle name was Richard as well.

当我足够大的时候，我发现他的名字并不是“爸爸”这两个字，而是理查德，同样，我中间的名字也是理查德。

youdao

When my own son was five years old, I became eager for another baby.

当我儿子５岁的时候，我开始渴望要另一个宝宝。

《柯林斯英汉双解大词典》

I slept alone when I was eight years old.

我八岁的时候一个人睡觉。

youdao

"My vision is of an incredibly beautiful girl who seemed quite old to me when I was eleven.

VOA: special.2009.08.24

At my old age, I can spend my time" "When I was a young man, that's all I did.

活到这把年纪，我可以把时间花在．．．,当我还是小伙子时，脑中总是性。

耶鲁公开课 - 政治哲学导论课程节选

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

So when I was old enough to ask my mother to - if I could buy (unintelligible), and she said, I could if I make the money.

NPR: Ornette Coleman on Sound Innovations

When I was 1 month old I started having seizures, and when I was 4 years old I went to Dr. Weiner and he gave me brain surgery to stop my seizures.

CNN: A boy and his seizure dog

When I was 5 years old, I was riding the new bike I had just gotten for Christmas when I fell off and the handle bars hit me in the ribcage.

CNN: Sickle cell patient refuses to let disease define her