摘要：1). The box is full of bottles. He is standing on the box. ----> The box on which he is standing is full of bottles. The box where he is standing is full of bottles. 2). This is the train. We work on the train. ---->This is the train on which we work. This is the train where we work. 3). I know the reason. She did it for the reason. ---->I know the reason for which she did it. I know the reason why she did it. 4). The man is our school master. You shook hands with the man just now. ----> The man with whom you shook hands is our schoolmaster. 5). The pen is made in Shanghai. She is writing with the pen. ----> The pen with which she is writing is made in Shanghai. 不能拆开的词组: look for / look after / catch hold of /take care of / put on / take off--.

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