1 先行词是人
    The teacher who is standing there is my brother.
    Is he the man who/that wants to see you?
    He is the man whom/ that I saw yesterday.
    Where is the girl who is called Lucy?
    2 先行词是物
    The next place we will visit is the Great Wall.
    The insect which scared her was dangerous.
    The picture that is on the wall belongs to my brother.
    The song which he is singing sounds beautiful.
    3 先行词是人或物
    The little girl whose mother is a nurse cries.
    The bread whose price is very high tastes great.
    They rushed to help the poor man whose car had broken down.
    Please pass me the textbook whose (of which) cover is green.
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