主从复合句--定语从句 定语从句：在复合句中作定语用修饰句子中某一名词或代词的从句叫定语从句。
① 定语从句的位置：放在名词或代词的后面。如：The man who has an umbrella in his . (手上抓了一把雨伞的人是我的叔叔。)
② 语法术语的改变：被修饰的名词或代词称为先行词；引导定语从句的连接词称为关系词, 其中that 、which 、who 称为关系代词, where 、when 、how 称为关系副词。
③ 关系代词或关系副词的作用： 关系代词who 、whom 和whose 指人, 分别在从句中作主语、宾语和定语。which 指
物that 多指物, 有时也指人, 它们在从句中可以作主语或宾语。定语从句中关系代
词作从句宾语时可以省略。This is the thief (that/who/whom) we have been looking (这个就是我们近日一直在找的小偷。) 请找一间足够大能住下我们全体的房间。) 关系副词when 或where 引导定语从句时, 它们在从句中分别作时间状语和地点状语。如：This is the room where they had a quarrel a week ago. (这是一个星期前他们吵
架的房间。) / I can never forget the day when I first saw you. (我永远不会忘记第一
次见到你的日子。)
④ 限制性定语从句和非限制性定语从句。限制性定语从句在句中不能省略, 否则主句意
思就不完整。非限制性定语从句和主句之间往往用逗号分开, 这种从句是一种附加
说明, 如果从句子中省去, 也不致于影响主句的意思。如：She spent the whole evening (她一个晚上都在谈论
她最近的书, 我们一个人都没有听说过那本书。)
[注解]
1、关系代词只能用that 的情况：当先行词是指事物的不定代词(all , anything 等), 或先行
词部分含有最高级, 或含有序数词时, 不能用其他的关系代词, 只能用that. 如：All (Lily告诉我的话似乎不真实。) / Can you give me (能不能给我点里面没有糖的东西？) / This is the . (这是第一辆运行于我市的双层公交车。)
2、关系代词在从句中作主语时一般用who (指人) 、that (指物), 而不用that 指人或用which
指物。 如：Do you know the woman who is weeping in the corner? (你认识那个在角
落里哭泣的女人吗？) / Do not tell me any words that have nothing to do with me. (跟
我无关的话, 请一个字也不要说。)
3、关系代词作从句的宾语时, 常用which 或whom , 较少使用that 或who , 而且, 关系代词
常常省略。如：Tom’s father was the first parent whom our teacher talked to. (Tom的
父亲是我们老师第一个谈话的人。)
4、当关系代词紧跟在介词后面时, 必须用which 或whom , 而当介词移到句尾时, 则又可以使用that 或who . 如：This is the room in which Miss Li once lived. (= This is the room Miss Li once lived in.) (这是李小姐曾经居住过的房间。)
1、定语从句中的关系词之三大功能
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呢？
在考查定语从句时往往结合一定的情景，因此，在解答时，必须根据情景和结构功能来选择所给的引导词。同时，还必须牢记一条：引导词不一定都是由先行词的定义来确定的，而是由先行词在定语从句中作什么成分来确定的。换句话说，先行词是表示时间的词，关系词不一定都是when, 先行词是表示地点的词，关系词有时非where, 先行词是the reason时，关系词why 决非唯一。我们应仔细分析先行词在定语从句中充当什么成分。
请比较下面的句子，看看你能否作出正确的选择。试一试吧，你能行的！
①I still remember the days____we spent in the countryside ten years ago.
A.when B.on which C.that D.for which
②Daye,____I visited ten years ago, has turned big city.
A.where B.x C.which D.to which
③Have you asked her for the reason____may explain for her absence?
A.why B.that C.x D.for which
④The days are gone forever____we didn’t have enough to eat.
A.since B.that C.where D.when
⑤This is the very place____the anti-Japanese soldiers fought over 60 years ago.
A.that B.which C.where D.there
怎么样，玩转了吗？检验一下吧：1 ~ 5 CCBDC
3、定语从句必须修饰一个名词或代词，没有先行词的定语从句是不可想象的。有时，先行词并非一个词乃为一个完整的句子。
“介词+which”前一定有一个时间、地点名词；而“介词+what”前往往无时间、地点名词。 请量体裁衣，好吗？大胆一点，你会成为一名高级缝纫师的！
1、He lives in _____is called Da Quangou. (B)
2.Do you know the place in____he used to live? (D)
3.Is there a hospital around____I can buy some medicine for cough? (A)
4.Do you know the hospital around____stand a lot of buildings? (D)
5.He is still working ____he has worked for ten years. (A)
A.where B.what C.that D.which
4、as 和 which引导的非限制性从句之异同
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2、先行词为时间名词、地点名词和reason 时，是选用关系代词，关系副词还是“介词+which”
as 和which 引导非限制性定语从句时，其用法既有相同之处，也存不同之点。具体情况是：
（1）as 和which 都可以在定语从句中作主语或宾语，代表前面整个句子。如：
He married the girl, as / which was natural.
（2）as 引导的非限制性定语从句可以放在主句之前或之后，甚至还可以分割主句，且常见于as is known, as sb. can know, as sb. know, as is wellknown, as it is, as is said above 等句型中。which 引导的非限制性定语从句只可放在主句之后。另外，as 常常有“正如”，“好象”的含义。如：As is known to all, China is a developing country.
He is from the south, as we can know from his accent.
John, as you know, is a famous writer.
Zhang hua has been to Paris more than ten times, which I don’t bielieve.
（3）当定语从句的结构为“主语+谓语+宾语”时，常用which.
如：He came late this morning, which made the teacher very angry.
（4）当先行词由such, the same修饰时，关系词常用as 。如：
This is the same dictionary as I lost last week.
注意：当先行词由the same修饰时，偶尔也用that 引导定语从句，但与as 引导的定语从句意思有区别。如：
She wore the same dress that she wore at Mary’s wedding.
她穿着她在玛丽婚礼上穿过的用一条连衣裙。
She wore the same dress as her younger sister wore.
她穿着跟她妹妹所穿的一样的连衣裙。
5、定语从句与同位语从句之区别
（1）定语从句修饰先行词，它与先行词是修饰关系；同位语从句说明先行词的具体内容，它与先行词是同位关系。
The plane that has just taken off is for Beijing. （定语从句）
The fact that he has already died is quite clear（同位语从句）
（2）定语从句的关系词在从句中担当相应的句子成分，同位语从句主要由连接词that 引导，在从句中一般不充当成分；有时也由where,how, when, who, whether,what等连词引导。但其说明之词并非时间、地点、方式等名词。
The problem that we are facing now is how we can collect so much money.（定语从句） The problem how we can collect so much money is difficult to solve.（同位语从句） I have no idea when he will come back. （同位语从句）
6、定语从句与强调句型之区别
关键是要抓住强调句型的特点，去掉it is (was) „tha 后，看这个句子经过整理后是否仍然成立，而在定语从句中that 是在从句中充当一定的成分的，若去掉that 句子是不成立的。
It is the factory where I worked ten years ago.（定语从句）
It is in the factory that he works.（强调句型）
7、where,when 引导定语从句与其连接的状语从句之辨别
当where 、when 从句是定语从句时，其前必有一地点名词、时间名词，此时，可换用“介词+which”。当前面没有地点名词、时间名词时，我们不可用 “介词+which”来取代where 连接的从句，因为此时的where 、when 从句乃名词性从句或状语从句。
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