二十一、which 引导的定语从句结构 which是关系代词，which后面应该加缺主语或者宾语的句子，在这个句子中，which要作成分，作主语或者宾语in which+完整的句子 which在定语从句中作in的宾语，所以不能作后面句子的主语名词+of which+谓语动词 of which来修饰名词，名词在定语从句中作主语，所以后面直接跟谓语动词
例1：In blank verse___of ten syllables, five of which are accented.
(A) line consists of each (B) consists of each line
(C) each line consists (D) it consists of each line
分析：空格前后均为介词词组，逗号后为非限定性定语从句，空格处缺主句主谓成分。A单数名词line前没有限定词，而且语义不清，B没有主语，D中it 指代不明，所以选C。 five of which are accented表示其中五个要被重读，of which修饰five, 十个中的五个
例2：The spiral threads of spider''s web have a sticky substance on them___insects.
(A) traps (B) trap its (C) which traps (D) which it traps
分析：空格前为完整的主谓结构，后面是一个名词，A和B显然不能与前面的谓语动词并列，故可以首先排除。D中的代词it明显是多余的，故也不对。C为正确选项，其中关系代词which指代前面的名词短语a sticky substance。网上有粘状的物质来诱捕昆虫。
例3：After the First World War, the author Anais Nin became interested in the art movement known as Surrealism and in psychoanalysis,both ___her novels and short stories.
(A) in which the influence (B) of which influenced
(C) to have influence (D) its influence in
分析：第二个逗号前为结构完整的句子，A中有从句引导词which, 却没有谓语动词，构成不了完整的句子。C中最后一个词为名词，无法与后面的名词短语连接，D构成名词短语，不合题意，而且名词influence一般接介词on, 故三个选项都可排除。B构成一个非限定性定语从句，故选B。
