B.of which
看如下两个分句:
Mary lives in the room.
the door _of the room_ opens east.
把两句合成一句复合句:
Mary lives in the room,whose door opens east.
Mary lives in the room,the door of which opens east.
显然定语从句,就这两种.
B.of which
看如下两个分句:
Mary lives in the room.
the door _of the room_ opens east.
把两句合成一句复合句:
Mary lives in the room,whose door opens east.
Mary lives in the room,the door of which opens east.
显然定语从句,就这两种.