单选from time to time we must look up words___A.the meaning of which we do not knowB.whose meaning we are not familiarC.we do not know their meaningsD.whose meanings we do not know
问题描述：
单选from time to time we must look up words___
A.the meaning of which we do not know
B.whose meaning we are not familiar
C.we do not know their meanings
D.whose meanings we do not know
答
这个句子先行词是words,如果选A，先行词就变成了the meaning
答
名词words先行词是复数，后面的定语从句用引导词whose.
答
答案应该是个定语从句,这个定语从句修饰words.第一,定语从句的结构是先行词+句子.先行词在从句中替代该定语从句要修饰的名词.第二,先行词是代词,某些代词比如whose\where可以等同介词+代词的结构,但不可能是the mean...