stage的過(guò)去分詞怎么變化

　　例句：

　　People tend to work hard at this stage of life.

　　人在這個(gè)人生階段往往發(fā)奮努力。

　　There were more than 50 people on stage in one scene.

　　有一場(chǎng)戲中舞臺(tái)上的'人有50多個(gè)。

　　He staged the most lavish productions of Mozart

　　他組織了一場(chǎng)空前盛大的莫扎特作品演奏會(huì)。