forge的过去分词怎么变化

　　例句：

　　1、She forged a new career in the music business.

　　她在乐坛上另创一番新事业。

　　2、 Someone had forged her signature on the cheque.

　　有人在支票上伪造了她的签名。

　　3、 Go and work for Mr Gladwell at the forge.

　　到铁匠铺去给格拉德威尔先生干活吧。