下面内容摘自 浙大出版社出版的 高中
英语语法通霸，网上有，你搜一下。
怎样区分限制性定语从句与
非限制性定语从句限制性定语从句
非限制性定语从句
形式上
不用逗号和主句隔开
用逗号和主句隔开
意义上
是
先行词不可缺少的定语，起“指定是哪一个”的作用，去掉后句意不完整
是对先行词的补充说明，删除后句子意思仍完整
译法上
翻译成先行词的定语，“……的……”
通常翻译成主句的
并列句关系词的使用上
A. 作宾语时可省略； B.可用that; C. 可用who代替whom；D.可用why
A. 不可省; B. 不用that; C. 不用who代替whom; D. why要换为for which
考点1. 限制性定语从句和非限制性定语从句的区别
A. 限制性定语从句紧跟先行词，与先行词之间一般不加逗号，仅修饰先行词，可以由
关系代词、关系副词或that来引导。非限制性定语从句仅作补充或说明，用逗号与主句隔开，既可修饰先行词，又可修饰整个主句，不可用that引导。如：
① This is the house which we bought lastmonth.
这是我们上个月买的那幢房子。（限制性）
② The house, which we bought last month, isvery nice.
这幢房子很漂亮，是我们上个月买的。（非限制性）
③ I lost mymoney that day, for which I had to walk home. (非限制性，for which不能换为why，which代指前面 “I lost my money that day.”这句话)
④ He met with a pretty girl in the park, whomhe fell in love at first sight. (非限制性，whom不能换为who)
B. 当先行词是
专有名词或由
物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的。如：
① Charles Smith, who was my former teacher,retired last year.
查理·史密斯去年退休了，他曾经是我的老师。
② My house, which I bought last year, has gota lovely garden. 我的房子，去年买的，带着个漂亮的花园。
③ This novel, which I have read three times,is very touching. 这本小说很动人，我已经读了三遍。
练习
翻译下列句子，注意体会限制性定语从句和非限制性定语从句在表达意思上的区别。
1. He has a brother who is a physicist.
He has a brother, who is a physicist.
2. He returned all the books which are writtenin English.
He returned all the books, which are written in English.
3. The man who lives next door is a doctor.
My sister, who lives next door, is a doctor.
4. A student who studies hard will make goodprogress.
The student, who lives far from school, is the captain of their football team.
考点2. as, which引导的非限制性定语从句
A. as引导的非限制性定语从句位置较灵活，可以位于主句前面、中间或后面，一般用逗号与主句隔开；但which所引导的非限制性定语从句不能放在句首。
As isknown to all, he is the best student in our class.
(as指代整个句子，作主语，置于句首)
He opposed the idea, as could be expected.
(as 指代整个句子，作主语，置于句末)
Taiwan , as you know, is a part of China.
(as指代整个句子，作宾语，置于句中)
He has towork on Sunday, which he doesn’t like.
(which引导的非限制性定语从句只能放在主句后面)
B. as引导非限制性定语从句，常带有“正如”。当从句为否定时不能用as。
She failedthe exam again, as was unexpected.×
She failed the exam again, which was unexpected.√
C. as,which 可指代整个主句，也可指代主句的一部分。
He wasvery happy, as could be seen from the look on his face. ( as指代前面整个主句)
He claimedhe could speak three foreign languages, which is not true. (which指代“he couldspeak three foreign languages”，指代前面一句话的一部分)
D. asis often the case是常用说法，意为“像往常那样；正如经常发生的那样”，只能用as，不能用which。
1. 【2010四川】After graduating from college，I took some time off to go travelling,______ turned out to be a wise decision.
A. that B. which C. when D.where
2. Ericreceived training in computer for one year, ______ he found a job in a bigcompany.
A. after that B.after which
C. after it D.after this
3. You were very impolite to him, for ______ youshould make an apology to him, I think.
A. this B. which C. what D.that
4. His movie won several awards at the film q329950885 festival, ______ was beyond his wildestdream.
A. which B. that C. where D. it
5. 【2009全国II】 Myfriend showed me round the town, ______ was very kind of him.
A. which B. that C. where D. it
6. 【2012北京】Whendeeply absorbed in work, ______ he often was，he wouldforget all about eating or sleeping.
A. that B. which C. where D. when
7. 【2012福建】The airquality in the city, ______ is shown in the report, has improved over the pasttwo months.
A. that B. it C. as D. what
8. ______ might be expected, the response tothe question was very mixed.
A. As B. That C. It D.What
9. 【2013陕西】______is often the case withchildren, Amy was better by the time the doctor arrived.
A. It B. That C. What D. As
10. TheBeatles, ______ many of you are told enough to remember, came from Liverpool.
A. what B. that C. how D. as
I. 单句改错
1. 【2005安徽】HenryRoyce did not like his car, that ran badly and often broke down.
2. 【2004重庆】I had tolook up the same word many times, for which was quite troublesome.
3. Which is natural, he married Mary.
4. There is no simple answer, which is often the case in science.
II. 语法填空（每空至多填三词）
5. 【2009福建】Ifpossible（可能）,we may leave them alone for some time before reading again, ______ will help a great deal.
6. 【2010湖北】______ we have stressed many times, “serve the people” is our firstpolicy.
7. 【2015江苏】Thenumber of smokers, ______ is reported, has dropped by 17 percent in just oneyear.
8. 【2015福建】China Todayattracts a worldwide readership, ______ shows that more and more people allover the world want to learn about China.
III. 写作技能提升
9. 我发现一个老人躺在马路上，我乘出租车立即把他送到了医院，这就是那天上午我迟到的原因。（findsomebody doing, take…to, which）
10. 正如一句谚语所说，“All work but no playmakes Jack a dull boy.”如果没有一个强壮的身体，一个人会一事无成。（saying, asound body, achieve）
11. 正如图表所显示的那样，这个城市的
空气质量在过去两年越来越糟。（as isshown in the chart, the air quality）
12. 在汉语演讲比赛中我获得了一等奖，这我做梦也没有想到。（win thefirst prize, Chinese speech competition, beyond my wildest dreams）
13. 在我国，许多学生上不起大学，
李华就是这种情况，但这些人却花这么多钱买奢侈品。（can’tafford to attend a college, as is the case with, waste money on, luxury）
非限制性定语从句在写作中非常好用，可以把琐碎的要点连成一个高级的句子来。尝试用非限制性定语从句翻译下面句子。
14. 我们的学校，位于
内乡西北角，有34年历史。（be locatedin, have a history of）
15. 我们学校里的老师，大多数都是三十多岁，把他们一切都奉献给了我们。（in one’s thirties, devote oneself to）
16. 我们学校的领导，都年轻有为，他们也都是教学方面的专家，还经常到外地学习先进的教学和管理经验。(young andsuccessful in their careers, expert, advanced theories in teaching andmanagement)
17. 我们学校有四千多学生，大多数都能用心学习。(the majorityof, put one’s heart into)
我为我们的学校而感到自豪。我相信，在这里，如果我们好好学习的话，一定
会考上名牌大学。(be proud of,