定语从句是中学英语教学的重点，也是学生学习的难点，同时又是高考考查的热点。纵观近年各地高考试题，就能发现考点大多集中在带有"插入语"的定语从句；which 、as 引导的非限定性定语从句； where 、 when引导的定语从句以及定语从句和强调句、同位语从句的区别等方面。对定语从句的考查不单纯考查其语法结构，而是把它融入到一定的语境中，考查考生的实际综合运用能力。
高考试题中，主要从以下角度考查定语从句：
定语从句的考点之一
正确区分关系代词that引出的定语从句功能强，除不能作定语(用whose)外，其它几个功能都可用that。但命题角度主要以that与which指物时的区别为重点进行命制。例如：
（1）——Do you have anything in mind _________ you’d like for supper?
——Well, _________ is OK with me.
A. that ; anything B. which ; everything
C. what ; whatever D. where ; something 选A。
（2）The wrong you’ve done him is terrible, for ______ you should make an apology to him, I think.
A. this B. which C. what D. that 选B。
定语从句的考点之二
正确区分关系代词(that或which)与关系副词when(表时间)、where(表地点)、why(表原因)。重点根据定语从句中所缺成分（即关系词在定语从句中作状语时，使用关系副词when (on which); where(in which); why(for which)；在定语从句中作作主语、宾语或表语时，使用that或which。）来确定是用关系代词还是关系副词，绝不能因先行词是时间名词就用when，是地点名词就用where，是reason就用why来确定。因此，认准先行词只是选择关系词的一个方面，更重要的是看其在后面定语从句中充当什么句子成分例如：
（3）He should stand near the stage ________ he could watch and follow the play.
A. where B. when C. that D. there 选A。
（4）Do you think the reason _______ he gave is believable.
A. for which B. which C. why D. what 选B。
（5）We are living in an age _______ many things are done on computer.
A. which B. that C. whose D. when 选D。
定语从句的考点之三
当先行词在定语从句中作主语时，应注意主谓语的一致性及被动语态问题。尤其要注意在考题中不用定语从句，而是用分词短语作定语。例如：
（6）The first textbooks ______ for teaching English as a foreign language came out in the 16th century.
A. having written B. to be written
C. being written D. written 选D。
（7）The train that stands at platform 7 / standing at platform 7 is for Wuhan.
（8）Any article that is left in these buses / left in these buses will be taken at once to the Lost Property Office.
定语从句的考点之四
定语从句中不能再重复与先行词有关的代词或副词。必须牢记定语从句中关系词已经替代先行词并且在定语从句中已经充当其成分，故不能再用相关的代词或副词。例如：
（8）He made another wonderful discovery, _______ of great importance to science.
A. which I think it is B. which I think is
C. which I think it D. I think which is 选B。
（9）This is the hospital _____ they visited last year and is the one _____ I worked in five years ago．
A．that；where B．where；that
C．where；where D．that；that 选D。
（10）There are dirty marks on her trousers ________ she had wiped her hands.
A. that B. which C. where D. when 选C。