定语从句高考考点解析[考点一]考查以that与which引导的定语从句(I) 通常只能用that的情况(1) 当先行词是不定代词all, few, little, much, something, anything, nothing ,everything , none等时。
His brother did ______ she could to help him .A. all whichB. all whatC. allD. which(2) 先行词被序数词，形容词的最高级以及被all ; any ;every ;each ;few ;little; no ;some ;the only ;the very ;the same ;the last 等修饰时。
He is the only student that (who ) is punished for breaking the school rules .(3) 如果两个先行词一个指人，一个指物，应用关系代词that 。
The famous writer and his works that the radio broadcast have aroused great interest among the viewers .(4) 在某些句型和时间状语中，间或用that来引导定语从句，可以不用when 来修饰表示时间的名词，如：every time ,the first time ,the moment ,the day ,the period等。
(a) She made me feel at home the moment (that ) I arrived .(b) In the ten days I was there I gained two pounds in weight .（5）先行词被the only, the very, the last 修饰时。
That white flower is the only one (that) I really like.This is the very book (that) I want to find.（6）先行词是疑问词who, which, what 时，定语从句用that而不用who, (whom)和which引导。
Who is the person that is standing at the gate?Which of us that knows something about physics does not know this?What that is on the table belongs to me?（7）当关系代词在从句中作表语时Mary is no longer the girl (that) she used to be.China is no longer the country that it used to be.(II) 通常只用which的情况(1) 关系代词which引导非限定性定语从句，指物只能用which，不用that 。
Her sister has become a lawyer, ________ she wanted to be.A. whoB. thatC. whatD. which(2) 关系代词which引导非限定性定语从句，指代前面整个句子内容时，只能用which。
Jim passed the driving test, _________ surprised everybody in the office.A. whichB. thatC. thisD. it(3) 如果句中有两个定语从句，其中一个用了that，另一个最好用which。
Let me show you the novel that I borrowed from the library which was newly open to us.（4）介词加关系代词后，指物时，若无所属关系，只能用which[考点二]如何判断用关系代词还是关系副词1) 找出定语从句中是否主语和宾语都齐全。
如齐全用关系副词。
用什么关系副词看先行词。
I will never forget the days (______ I stayed with you).1958 was the year ______ (Spielberg made his first real film).Please give me the reason _____ (you made such a great success).Do you remember the lake _____ (you first met your girlfriend.）2) 如定语从句中缺宾语，确定定语从句的谓语动词是不是及物动词，如是，用关系代词，如不是，用关系副词。
Yesterday we went to visit the house ______ (the great writer used to live).The house ______ (they built in 1987) stayed up in the earthquake.3）如定语从句中谓语结构是被动结构，有主语，则用关系副词。
Kunming is a beautiful place ______ ( flowers are seen all the year round).October 1st is the day ________ ( new China was founded).[考点三]考查以who、whom与whose引导的定语从句(1)如果先行词是指人的不定代词anyone, anybody, everyone, everybody, someone, somebody , nobody, one , ones ,those ,all (指人)等作先行词，作主语用who，作宾语用whom 、who而不用which 。
Anyone who breaks the rule will be punished(2)在非限制性定语从句中，指人作主语用who，作宾语用whom 、who。
The famous basketball star, _______ tried to make a comeback, attracted a lot of attention.A. whereB. whenC. whichD. whoAlec asked the policeman _______ he worked to contact him whenever there was an accident.A. with himB. whoC. with whomD. whom(3) 在定语从句中，作定语的关系代词只能用whose ,表示某物时，它相当于the +noun +of +which或of which +the +noun ；表示某人时，它相当于the +noun +of +whom或of whom +the +noun 。
Look out! Don’t get too close to the house ______roof is under repair.A. whoseB. whichC. of whichD. what(b) I was given three books on cooking, the first _______ I really enjoyed.A. of thatB. of whichC. thatD. which[考点四]考查关系副词where、when与why引导的定语从句它们相当于“介词+which”，其中where = in/ at +which ; when= at/ in /during +which ; why = for+ which 。
(1)关系副词Where引导定语从句时，只能在定语从句中作地点状语，其修饰的名词必须是表示地点的名词。
We’r e just trying to teach a point ______ both sides will sit down together and talk.A. whereB. thatC. whenD. which(2) 关系副词when引导定语从句时, 只能在定语从句中作时间状语，其修饰的名词必须是表示时间的名词。
There was ________ time ________ I hated to go to school .A. a; thatB. a; whenC. the; thatD. the ; when(3)关系副词why引导定语从句时，只能在定语从句中作原因状语，其修饰的名词必须是表示原因的名词。
Do you know the reason why she was put into prison ?[考点五] 对“as”引导定语从句的考查(1) 先行词与as ; so ; such ; the same 连用时，常用关系代词或副词as 。
(a) Children should read such books _____ will make them better and wiser .A. whichB. thatC. whatD. as(b) I ever studied at the same college as she did .(2) 在引导非限定性定语从句中，指代前面句子的内容时用which或as，指代后面句子的内容时只能用as 。
Jim passed the driving test , _______ , surprised everybody in the office .A. whichB. thatC. thisD. it(3) 表示“正如...”时, 只能用关系代词as。
如：as is known to all; as we all know; as (it) often happens; as has been said before; as was expected; as is said above; as is mentioned above; as is reported等。
______ is reported in the newspapers ,talks between the two countries are making progress .A. ItB. AsC. ThatD. What[考点六]对“介词+关系代词”的考查当关系代词作介词宾语，且该介词不是和从句的谓语动词构成固定短语时，介词可以提前，这样就出现“介词+关系代词”。