英语中,must have been 和 must have +过去分词,有什么区别
问题描述:
英语中,must have been 和 must have +过去分词,有什么区别
如题
答
must have been表示过去的状态; must have +实意动词的过去分词表示过去发生过了的动作.
英语中,must have been 和 must have +过去分词,有什么区别
如题
must have been表示过去的状态; must have +实意动词的过去分词表示过去发生过了的动作.