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四. whose与of whom/which引导定语从句的对比
I bought a bicycle whose handles were red.（“whose+名词”引导定从）
I bought a bicycle the handles of which were red.（“the+名词+of which”引导定从）
注意，只有当作主语时，“the+名词+of which” =“of which the+名词”。如，
2.不定代词/数词+of whom/which，只用在非限制性定语从句中，且此时的“of whom/which”不能用whose代替。（这里的不定代词有some, any, all, both, many, most等。数词有one, the first等。）（这里的“不能用whose代替”是很容易理解的，因为，显然没有“whose+不定代词或数词”这种结构。）
●It’s a family of eight children, some of whom are studying music.
●Here are the questions, some of which I think difficult.
（I think some of which difficult→some of which I think difficult）
●Here are many books, two of which he borrowed.
（I borrowed two of which→two of which I borrowed）
1. The school shop, customers are mainly students, is closed for the holidays. (2011,四川) A．which B．whose C．when D．where
2. Children who are not active or diet is high in fat will gain weight quickly. (2010,北京)
A. what B. whose C. which D. that
3. Look out! Don't get too close to the house____ roof is under repair.(福建高考题)
A. whose B. which C. of which D. that
句意：注意！不要离正在维修屋顶的那栋房子太近。分析：whose roof=the roof of which（这个结构在作主语/宾语/表语时都成立）= of which the roof（这个结构只有在作主语时成立）。选A。