a door to ... 通向 ...... 的门：The door to this room is never locked. 这房间的门从不上锁。（摘自《朗文实用英语词语搭配词典》p.369)
The door to the kitchen was open. 去厨房的门开着。（摘自《麦克米伦高阶英汉双解词典》p.603）
表示“ ...... 的门”时，通常用 the door of ... 也可以用 the door to ...但是，在下面的句子中，通常应该用 the door to ...：
You still wouldn't know which door is the door to heaven and which door is the door to hell. 你仍然不会知道，哪一道门是通向天堂之门，哪一道门是通向地狱之门。
