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。