实用英语语法：考生备考定语从句容易犯的七个错点
一、混淆定语从句与并列句请看下面两题：
(1) He has two children, and both of _____ are abroad.
A. them B. which C. whom D. who
(2) He has two children, both of _____ are abroad.
A. them B. which C. whom D. who
【分析】第(1)题选A，第(2)题选C。由于第(1)题中用了并列连词and，从而使整个句子为并列句，and后应是一个独立的简单句，所以选A不选C；第(2)题没有并列连词and，both of whom are abroad为非限制性定语从句。
二、混淆定语从句与表语(从句)
请看下面的试题：
(1) Your coat is still _____ you left it.
A. where B. there C. there where D. the place where
【分析】答案选A，where引导的是表语从句(=在…的地方)，而不是定语从句。
(2) Is this school _____ your father worked in ten years ago?
A. where B. what C. that D. the one
【分析】答案选D，this school为句子主语，the one 为表语，your father worked in…为定语从句。不要误认为this是句子主语，否则school前应加冠词the。比较：
Is this the school _____ your father worked in ten years ago?
A. where B. what C. that D. the one (选C)
Is this the school _____ your father worked ten years ago?
A. where B. what C. that D. the one (选A)
三、混淆定语从句与状语从句
请看下面的试题：
(1) I went upstairs ______I heard some crying.
A. where B. when C. that D. which
【分析】答案是B而不是A，when的意思是“当…的时候”，引导的是时间状语从句。(upstairs为副词，不宜用作先行词)
(2) He is _____ a clever boy _____ we all like.
A. such, that B. such, as C. so, that D. so, as
【分析】答案应选B，而不是A。such … that …(如此…以致…)用于引导结果状语从句，其中的that不充当句子成分，而such…as…中的as为关系代词，用以引导定语从句并在定语从句充当句子成分。上句中第二空之所以选as，是因为它用作动词like宾语。
四、误加与关系代词同义的人称代词
误：He is a man everyone respects him.
正：He is a man everyone respects. 他是一个人人都敬重的人。
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