现在是早上5点半，我已经起床了。

It's 5:30 in the morning, he has got up.

youdao

我已经起床了。

I am already up.

youdao

我醒来时，我妈妈已经起床半个小时了。

By the time I woke up, my mom had got up for half an hour.

youdao

我醒来时，我妈妈已经起床半个小时了。

By the time I woke up, my mom had got up for half an hour.

youdao