done是do的过去分词，也是一个形容词，意为“已完成的”，意味着前面的事情已经“做完、说完......”等等，主语可以是“物”，也可以是“人”。

既然用作形容词，就可以说be done.

When you're done, perhaps I can say something.等你说完，也许我可以说点什么。

I am done with this sewing project.我已经做完这个裁缝计划了。

Clean out the bathtub when you are done.洗完澡后请把浴缸洗干净。

Return immediately you are done.事情一做完就回来。

As soon as the cake is done, remove it from the oven.蛋糕一烤好就从炉子里取出来。