How can Linda recover from illness in the room when it is so dirty and dusty?关系供词when,不用where?
问题描述：
How can Linda recover from illness in the room when it is so dirty and dusty?关系供词when,不用where?
答
How can Linda recover from illness in the room 〔when〕 it is so dirty and dusty是不对的
in the room指地方
后面的it is so dirty and dusty是noun clause
应该用『where』，否则后面的noun clause并不成立。
『it 』指『the room』应用where而指地方
答
it已经指明地点了