havent 是什么时态

They haven't yet put a price on the business.

他们还没有给这笔生意开价。

I haven't known him as long as you.

我认识他的时间没有你长。

I haven't been here for a long time.

我已很久没来这里了。

I haven't been able to get much work done today.

我今天未能干多少工作。

We haven't won yet, not by any means.

我们离成功还远着呢。