Dr. Watson and I will spend the night locked in your room.
不能理解locked in your room, 是否可以改写为:
Dr. Watson and I locked in your room will spend the night.
即"Dr. Watson and I locked in your room "是句子主语:过去分词短语作后置定语,如果进一步改写,是who are locked in...还是who have been locked in...呢?