I need time to be able to do my homework.

我需要时间来做作业。

It suddenly occurs to me that I forgot to do my homework.

我突然想起我忘记做作业了。

I'll do my homework after supper.

晚饭后我要做家庭作业。

I like to do my homework alone.

我喜欢单独做作业。

I often do my homework at it.

我经常在那做我的家庭作业。