lie的過去式和過去分詞是什么？

　　例句

　　Go and lie down for a while.

　　去躺一會兒吧。

　　I found her lying on the ground.

　　我發現她躺在地上。

　　You could see from his face that he was lying.

　　從他的表情上你可以看出他在說假話。

　　I'll lay you any money you like he won't come.

　　我看他不來了，你愿意賭多少錢我都奉陪。

　　His book explains the theory for the lay public.

　　他的書為大眾闡明了這個理論。