a surface of which one end or side is at a higher level than another; a rising or falling surface
这是关于词典Oxford dictionary of English 2nd 关于名词 slope的定义。
我看不懂的地方在of which 这里,以我浅显的语法能力判断 of which应该相当于 whose做连接词引导定语从句,可是语法书上现实的规则是可以被“the+n.+of which” or “of which +the+n.”取代,即:whose+n. 。而这条定义的of which后面没有the,我不敢妄加判断,故由此产生疑问。类似的案例还有关于 era 的定义来自剑桥高阶词典:a period of time of which particular events or stages of development are typical。同样姑且认为是particular之前应加the的结构,虚心向老师请教。
这两个of which起始不一样,第一个表示所属,第二个是句末的介宾结构前置。
a surface of which one end or side is = a surface one end or side of which is(不是说非得用the)
a period of time of which particular events or stages of development are typical(particular events ... are typical of which)
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