新概念问题：1.Visitors have been asked to keep the woods clean and tidy.请问这是现在完成时态吗?主语+have+动词过去分词为什么这里面有两个过去分词?been asked?

分类: 作业答案 • 2021-12-20 03:03:41

问题描述：

新概念问题：1.Visitors have been asked to keep the woods clean and tidy.请问这是现在完成时态吗?
主语+have+动词过去分词为什么这里面有两个过去分词?been asked?

答

这里其实是现在完成的被动式.
have been asked 被要求

新概念问题：1.Visitors have been asked to keep the woods clean and tidy.请问这是现在完成时态吗?主语+have+动词过去分词 为什么这里面有两个过去分词?been asked?