1、非限制性定语从句观察例句1Our guide，who was a French Canadian，was an excellent cook.2Peter，whom you met in London，is now back in Paris.3The boy，whose hat is red，studies very hard.4He will come here yesterday，when he will be free.5They went back to London，where was their hometown.归纳用法1who引导的非限制性定语从句My gardener，wh
2、o is very pessimistic，says that there will be no apples this year.我家的园丁非常悲观，他说今年将不结苹果。2whom引导的非限制性定语从句Mr.Smith，from whom I have learned a lot，is a famous scientist.史密斯先生是一位著名的科学家，我从他那儿学了许多东西。3whose引导的非限制性定语从句whose是关系代词who的所有格形式，在从句中作定语。whose通常指人，也可指动物或无生命的事物。The boy，whose father is an engineer，studi
3、es very hard.那个小男孩学习很努力，他的父亲是位工程师。The house，whose windows face north，belongs to him.窗子朝北的那个房子是他的。4which引导的非限制性定语从句关系代词which在非限制性定语从句中所指代和修饰的可以是主句中的名词、形容词、短语、其他从句或整个主句，在从句中作主语、动词宾语、介词宾语或表语。(1) which指代主句中的名词，被指代的名词包括表示物、婴儿或动物的名词、表示单数意义的集体名词以及表示职业、品格等的名词。These apple trees，which I planted three years ag
4、o，have not borne any fruit.这些苹果树是我三年前栽的，还没有结过果实。(2)which指代主句中的形容词。She was patient，which her husband seldom was.她有耐心，她丈夫却很少这样。(3)which指代主句中的某个从句。He said that he had never seen her before，which was not true.他说以前从没见过她，这不是真的。(4)which指代整个主句。In the presence of so many people he was little tense，which was
5、understandable.在那么多人面前他有点紧张，这是可以理解的。5as引导的非限制性定语从句as引导非限制性定语从句时，代替整个主句，对其进行说明。as在非限制性定语从句中作主语、表语或宾语，且引导的从句位置比较灵活，可位于句首或句末，也可置于主句中间。通常均由逗号将其与主句隔开。as有“正如， 就像”之意。As is known to the United States，Mark Twain is a great American writer.美国人都知道，马克吐温是一位伟大的美国作家。(as在从句中作主语)He forgot to bring his pen with him，a
6、s was often the case.他忘了带笔，这是常事。(as在从句中作主语)6“介词关系代词”引导的非限制性定语从句“介词关系代词”引导的非限制性定语从句，即在介词后引导的非限制性定语从句。关系代词主要有which，whom，whose。介词的选择取决于它与先行词的搭配或与从句中谓语动词的搭配。They were short of sticks to make frames for the climbing vines，without which the yield would be halved.他们缺搭葡萄架的杆儿，没有它们产量会减少一半。7“名词/代词ofwhich/whom”
7、引导的非限制性定语从句It now has 20，000 hectares of land，more than twothirds of which are under cultivation.现在它拥有两万公顷土地，其中多于三分之二的土地已经耕种。8关系副词when在非限制性定语从句中作时间状语，when指代主句中表示时间的词语He will put off the picnic until May 1st，when he will be free.他将把郊游推迟到5月1号，那时他将有空。9关系副词where在非限制性定语从句中作地点状语，where指代主句中表示地点的词语They went
8、 to London，where they lived for six months.他们去了伦敦，在那儿待了六个月的时间。即学即练单句语法填空I have two sisters，who are both students.The play，whose style is rigidly formal，is typical of the period.They reached there yesterday，where a negotiation of sale will be held.The textile mill has over 8，000 workers and staff，eig
9、hty percent of whom are women.单句语法填空1He finished college at fifteen，which I found hard to believe.2It is a truly delightful place，which looks the same as it must have done 100 years ago with its winding streets and pretty cottages.3As is supposed，he succeeds in the end.4The old woman，who lives on he
10、r own，has a cat for company.5As is often the case，we have worked out the production plan.6The professor gave us a lecture yesterday，the meaning of which I couldnt understand completely.7She lived in Nagoya for a couple of years，where she taught Chinese.8Yang Liwei，whose parents are both teachers，is
11、the first man in China who has travelled into space.9The castle is the place，which I most like to be in the summer.10The tigers in the zoo are heavy，the biggest of which is more than 200 pounds.短文语法填空I have a family which is not big，but warm.In my family there are three people，1.who are my father，my
12、 mother and I.My father is a young man，2.who works very hard in a hospital.He likes playing football，3.which is his hobby.He also likes to read novels which were written by famous writers.My mother teaches maths in a school，4.where I am studying.She likes watching TV plays 5.which are acted by famous stars.I am very clever.I like playing basketball，6.which is my hobby.And I like watching NBA Games 7.which are played by famous players.This is my family，8.which is a warm and happy one.