you didn`t hear my knocking at the door; you______ soundly when i_英语解答

you didn`t hear my knocking at the door; you______ soundly when i came in
答案是must be sleeping 是否应是must have been sleeping

人气：234 ℃　时间：2020-02-04 03:16:41

解答

答案是对的.若用must have been sleeping则表示从过去某个时间点一直睡到现在；而依题意应该仅是‘我’在敲门时,你睡得很香甜.FYI:现在完成进行时表示从过去某时开始一直持续到现在的动作,并且还将持续下去.The Chin...