beforehave是什么意思

　　I didn't have time to change clothes before the party.

　　我没时间在聚会前更换衣服。

　　I've never produced a play before but I'll have a shot at it.

　　我从来没有写过戏剧，不过我要尝试一下。

　　I'll die first, before I let you have all my money!

　　我宁愿死，也不会让你得到我所有的钱！