☞I’ll never forget the time during which I spent my childhood in the country.
☞John invited about 40 people to his wedding，most of whom are family members.
☞His head soon appeared out of the window，from where he saw nothing but trees.
他的头很快从窗口探了出来，从那里除了树木他什么也看不到。(from where相当于from out of the window，而不是from the window)
在定语从句中，含介词的短语动词不可拆开使用(短语拆开后含义发生变化)，如look after, look for等。
＂of which / whom＂有时可以用＂whose＋名词＂结构来改写。
当先行词为way并且定语从句中缺少状语时，通常用in which或that引导定语从句(in which或that可省略)；如果定语从句中不缺少状语，则用关系代词引导(that 或which 可省略)。
1.(2017·江苏卷·单项填空) In 1963 the UN set up the World Food Programme, one of ________ purposes is to relieve worldwide starvation.
A. which B. its
C. whose D. whom
2.（2016 • 江苏卷·单项填空）Many young people, most _________were well-educated, headed for remote regions to chase their dreams.
A. of which of them
C.of whom D.of those
【答案解析】考查定语从句。本题定语从句的先行词是Many young people，关系代词whom指代先行词，在定语从句中作介词of的宾语。句意：很多年轻人都前往偏远地区追求它们的梦想，其中大部分人都受过良好教育。故C项正确。
☞Sorry, I’ve forgot the day when we met for the first time.
抱歉，我记不起我们第一次见面的日子了。（定语从句，先行词the day 与when含义相应）
☞I’ve no idea when we met for the first time.
☞Do you know the time when the class is over? 你知道下课的时间吗？（定语从句）
☞It was already five o’clock when the class was over.
=When the class was over, it was already five o’clock.
☞This is the place where we used to live a few years ago.
☞Let’s go where we can find a better job.
定语从句对名词或代词的修饰和限制，关系词可能是that, which, as, who, but, 另一方面，句子中的It有所指；而强调句型是对某部分加强语气，强调语气的连接词只能是that, who，并且句子中的It 没有任何意义；一般比较明显，而有时就难以区别，还需要根据上下文的语境来判断。*网
It is a book that he wants.
它究竟是强调句型还是定语从句，就要从语境上来考察。如果它是用来回答What is this / that? 这样的问题，意思是：它是一本他想要的书。句子显然是定语从句。如果是用来回答What does he want? 这样的问题，那么意思是：他想要的是一本书。显然，句子是强调句型。
☞It is such an interesting book as we all like.
☞It is such an interesting book that we all like it.
比较：It is such an interesting book that we all like. 强调句型。意思是：我们大家都喜欢的是一本如此有趣的书。
☞The book being very interesting, we all like it. 由于这本书有趣，我们大家都喜欢它。
☞The book which / that is very interesting was published last year. 这本有趣的书是去年出版的。
1.—He wrote a lot of novels, none of____________ were popular.
—It’s the same with his wife. She wrote some plays, but none of ___________ was a success.
A.these；them B. which；which
C.those；which D. which；them
2.After the war, a new school building was put up____________ there had once been a theatre.
A.that B. where
C.which D. when
3.After living in Paris for fifty years he returned to the small town_____________ he grew up as a child.
A.which B. where
C.that D. when
【参考答案】2. B 3. B
＂介词+which＂来代替where，而地点状语从句则通常只能由where引导。因此第2题中无表示地点的先行词，是表示地点的状语从句，故填where，第3题中the small town是先行词，为定语从句，故填where，也可用in which替换。
1.(2017·浙江) Italy, _________ has a much weaker tradition of immigration, has witnessed a sharp increase in immigration in recent years.
2.(2017·北京) If we use, to achieve our purposes, a mechanical agency with _________ operation we cannot effectively interfere(干预), we had better be quite sure that the purpose put into the machine is the purpose which we really desire.
3.(2017·北京)This is called“herd immunity”, ________ protects the people who get hurt easily, including those ________ can’t be vaccinated for medical reasons, babies too young to get vaccinated and people on ________ the vaccine doesn’t work.
4.Her performances on the stage were perfect，________ made a lot of people admire her.
5.The city was attacked by such terrible weather ________ few citizens had ever experienced before.
6.A story I read two years ago，________ name I can’t remember clearly，changed my idea about education.
7.I don’t know the reason ________ you lied to your parents，but you’d better explain.
8.________ is mentioned above，paper is first made in China.
9.A sailor ________ has experienced no storm will never become an excellent sailor.
10.I often think about the times ________ I have felt hurt and insulted by rude remarks from strangers and sometimes from acquaintances.
1.Human facial expressions differ from those of animals in the degree ________ they can be controlled on purpose.
A.with which B.to which
C.of which D.for which
2.Gun control is a subject_________ Americans have argued for a long time.
A.of which B.with which
C.about which D.into which
3.Eric received training in computer for one year, ___________ he found a job in a big company.
A.after that B.after which
C.after it D.after this
4.True friendship is like health, the value___________is seldom known until it is lost.
A.of it B.on which
C.of whom D.of which
5.With more than 17 000 islands, _________ _only 6 000 are inhabited, Indonesia is the world’s largest archipelago (群岛).
A.on which B.for which
C.of which D.along which
6.Pointing to the house on ____________ roof grew lots of bushes, the old man told me that was ____________ I would stay.
7.Our special thanks go to thousands of volunteers, without ____________ tireless work, none of these would be possible.
8.—Have you known Jane for long?
—Not very long, ______________ we started to serve the World Expo in Milan.
Do you know the man __1__wrote this book？He was Jason，one of the engineers __2__came from Russia in the 1950s.He worked in the same factory __3__my father once worked. When he came to China，the first thing __4__ he did was to visit the factory __5__did research on trolleybuses and found out the reason __6__China was so backward in it.Then he spent every minute __7__he could spare to help China develop transportation.__8__is mentioned above，Jason was a foreigner __9__made great contributions to our country and was a kind man to __10__we should say thanks.
When you decide you’re going to live alone，you get upset. This is __1__(nature). But there’s no need to get __2__(worry). Below are some ideas __3__ can help you out.
Saving money is __4__ you need to start several months before you move out. You need to save enough money__5__(help) you survive for at least a month in the new place. The __6__(easy) of all ways is to spend less!
Search for a place to live in before__7__(move) out. Make sure that the place you choose is in a good location. Besides，you can afford__8__.If you’re going to stay in an expensive city，find a roommate so that you can share the expenses.
And if you have to live__9__your own for a long time，you’ll have to look for a part－time job. If you’re__10__student，you can work in restaurants，theaters，etc. And don’t spend a lot of money in a wasteful way! Try and save every penny of what you earn.
1.（2016 • 浙江）Scientists have advanced many theories about why human beings cry tears, none of ______ has been proved.
A.whom B. which
C.what D. that
2.(2015·浙江) Creating an atmosphere employees feel part of a team is a big challenge.
C.in which D. at which
3.(2015·重庆) He wrote many children’ s books, nearly half of_________ were published in the 1990s.
A.whom B. which
C.them D. that