式，句子中有介词连接两个动词，那都要加ed吗

介词后面只能跟动名词，即动词+-ing, 动名词的被动语态是：being+过去分词（一般式）和having been +过去分词）
After finishing/having finished the task, he went home.
Before being killed, he came to this shop.
After the work having been finished, they left the office.

温馨提示：答案为网友推荐，仅供参考

当前网址：https://verywind.cn/ee/vxyvf27jveje7eyeff2.html