Maria has written two novels, both of _____ have been made into television seri

题型：不详难度：来源：

Maria has written two novels, both of _____ have been made into television series.

A．them

B．that

C．which

D．what

答案

C

解析

试题分析：这个句子中含有一个非限制性定语从句， 因此排除A。介词后关系词如果指物，只能用which。
点评：当引导词在定语从句中作介词的宾语时，往往可以把介词放在关系代词之前，构成“介词 + 关系代词（whom / which）”结构。做这类考题时，有以下三个注意事项。1. “介词 + 关系代词”引导定语从句时，关系代词只有whom（指人），which（指物）和whose（表所有）。注意不能用who或that，关系代词也不可省略。如：Do you know the girl with whom the English teacher talked just now? 你认识刚才跟英语老师谈话的那个女孩儿吗？2. 关系副词可以用“介词 + 关系代词”来替换。其中，when =" at" / in / on + which; where =" at" / in / on + which; why =" for" which；而关系代词whose常可用“of + which / whom”来替换。如：The house whose doors are green is an office building. =" The" house of which the doors are green is an office building. 3. 含有固定搭配的动词短语，由于其关系紧密，不宜拆分，所以不能将介词置于关系代词之前。这类动词短语有 look after, take care of, listen to, look at, look into, come across, look forward to, break into等。