hardly是hard的副詞形式嗎?

　　I can hardly believe it.

　　我幾乎不敢相信。

　　I hardly slept a wink.

　　我幾乎連個盹都沒打。

　　All five men are hard workers.

　　五個人全都工作努力。

　　Hard work never hurt anyone.

　　努力工作絕無害處。

　　That's a very hard question.

　　那是個很難的問題。