hardly是hard的副词形式吗?

I can hardly believe it.

我几乎不敢相信。

I hardly slept a wink.

我几乎连个盹都没打。

All five men are hard workers.

五个人全都工作努力。

Hard work never hurt anyone.

努力工作绝无害处。

That's a very hard question.

那是个很难的问题。