I'll drop in on you when I have time.

有空我来看你。

《新英汉大辞典》

Do I have time?

我有时间吗？

youdao

I have time to compose my thoughts, and retain a record of my mistakes and problems.

我有时间去编辑我的思想，保留我的错误和问题的记录。

youdao

He said, "Have a seat", and I sat down, "Is this the first time you've been to our little town?"

VOA: special.2010.07.02

It'll probably be the last example I have time for and so I'll go through the rest of them quickly in the next lecture.

因为时间关系,这可能是最后一个例子,下节课我会快速讲完剩下的内容

耶鲁公开课 - 生物医学工程探索课程节选

I'm interested in sports. I'm an avid fan and I, you know, play when I have time.

我对体育非常着迷，是一个狂热的体育迷。我一有时间就去运动。

广播人员怎么样？ - SpeakingMax英语口语达人

And if I can speak to them and I have time, I always text back.

CNN: Flo Rida answers the call

Now at least I have time to relax and begin to focus my mind on the race.

BBC: Britain's Mara Yamauchi arrives in London for Marathon

Once I have time, it will be amazing to see how many firsts we were able to accomplish.

WSJ: Fordham falls 1 point short in A10 title game