☛You did a lot for me, for which I was grateful. 你为我做了许多，对此我很感激。
☛The Diaoyu Island belongs to China, as is known to us. 众所周知，钓鱼岛属于中国。
☛A middle-aged woman killed her husband, which frightened me very much. 一个中年女子杀害了自己的丈夫,这令我十分恐惧。
☛China, which is my motherland, is developing fast. 中国是我的祖国，正在快速发展。
☛Eason, who was a pop star, got married last year. 伊森去年结婚了，他是明星。
☛Last Sunday they reached Nanjing , where a conference was to be held. 他们上周日到达南京，有个会议要在那里举行。
☛He has a daughter, who is studying in London. 他有个女儿，现在正在伦敦学习。（只有一个女儿）
☛This is my teacher, who has something to tell you. 这是我的老师，他有一些事情要告诉你。
☛People who take physical exercise live longer. 进行体育锻炼的人活得长些。(若把从句去掉句子就失去意义)
☛His daughter, who is in Boston now, is coming home next week. 他女儿现在在波士顿，下星期回来。(若把从句去掉，句子意义仍然完整)
☛He is the man whose car was stolen. 他就是汽车被窃的那个人。
☛I’ve invited Jim, who lives in the next flat. 我邀请了吉姆，他就住在隔壁。
☛I have a sister who is a doctor. 我有一个医生的姐姐。(姐姐不止一个)
☛I have a sister, who is a doctor. 我有一个姐姐，她是当医生的。(只有一个姐姐)
☛Peter drove too fast, which was dangerous. 彼得开车很快，这是很危险的。(which指drive too fast)
☛He changed his mind, which made me very angry. 他改变了主意，这使我很生气。(which指整个主句)
☛Mr. Smith, who is our boss, will leave for Japan next week. 我们的老板史密斯先生下周要去日本。(先行词为专有名词，要用非限制性定语从句修饰)
☛Her father, who has a lot of money, wishes her to study abroad. 她父亲很有钱，希望她出国学习。(先行词为表独一无二意义的普通名词，要用非限制性定语从句修饰)
1.(2018·北京卷·单项填空) She and her family bicycle to work, _________ helps them keep fit.
A.which B. who C. as D. that
2.（2017·新课标卷I·语法填空）Like anything, it is possible to have too much of both, 70 is not good for the health.
【答案解析】句意：很可能摄入过多的脂肪和盐，那对健康没有好处。分析可知which is not good for the health为非限制性定语从句，先行词是前面的整句话。
3.（2017·新课标卷II·短文改错）In their spare time, they are interesting（改为interested） in planting vegetables in their garden, that is on the rooftop of their house.
3.（2017·新课标卷III·语法填空）But Sarah, 64 has taken part in shows along with top models, wants to prove (prove) that she has brains as well as beauty.
【答案解析】考查定语从句。分析句子结构可知， 64 has taken part in shows along with top models是非限制性定语从句，非限制性定语从句中缺少主语，且先行词为Sarah，指人，要用who。
4.（2016·全国新课标卷I·语法填空）But my connection with pandas goes back 64（to） my days on a TV show in the mid-1980s, 65 I was the first Western TV reporter 66（permitted） (permit) to film a special unit caring for pandas rescued from starvation in the wild.
☛The meeting was put off, as /which was exactly what we wanted. 会议被推迟了，这正是我们想要的。
☛He was a doctor, as/which I knew from his manner. 他是一名医生，我是从他的举止中知道的。
☛As is known to all, fish can’t live without water. 众所周知，鱼离开水无法生存。
☛Air, as we know, is gas. 正如我们所知，空气是气体。
☛She told me she won the match, which was a lie. 她告诉我们她赢得了比赛，这是一个谎言。
☛The material is elastic, as (was) shown in the figure. 这种材料是有弹性的，正如图中所示。
☛He saw the girl, which delighted him. 他看见了那个女孩，这让他很高兴。
☛He didn’t say anything at the meeting, as/which seemed very strange. 他在会议上一言未发，这看起来非常奇怪。
4.as常用＂正如＂含义，常用的结构有as we know（众所周知）；as often happens（正如常发生的那样）；as is often the case（情况常常如此）；as we all can see（正如我们看到的）；be announced / expected / known / imagined / mentioned / said / shown / reported等。这些结构常放句首，偶尔也可以放句中或句末。
☛As is known to all, China is a developing country. 众所周知，中国是一个发展中国家。
☛Kate was late for school, as often happened. 凯特上学迟到了，正如常发生的那样。
☛My brother enjoyed playing basketball, which he really plays well. 我哥哥喜欢打篮球，他打得非常好。
☛Beijing, which he was born in, is our capital. 北京，他出生的地方，是我们的首都。
The Travel Agency, with which our company has been dealing for several years, has opened for new branches. 那家与我们交易了好几年的旅行社又开了新的分店。
☛Air is a mixture of gases, of which oxygen forms 21 percent. 空气是一种气体的综合体，其中氧气占了21%。
☛He can write a letter in English, which I can not. 他可以用英语写信，我不能。
☛Metal will bear beating with a hammer, which a stone will not. 金属能承受得住用锤子敲打，但是石头则不能。
☛He said he had passed the exam, which was untrue. 他说他通过了考试，这是假的。
1.The number of smokers，________is reported, has dropped by 17 percent in just one year.
A.it B.which C.what D.as
2.（2017学年上海外国语大学附属外国语学校期中）He has made as much progress ______________ is enough for him to be admitted to Fudan University.
A.as B.that C.what D.which
1.You must learn to read people, ___________ will be necessary if you work in a team.
A.who B. thatC.which D. what
2.In ancient Egypt, green represented hope and spring, ___________ is the time of year ____________ things in nature start to grow after a long winter.
A.when；which B. what；when
C.which；when D. which；that
3.English is a language shared by several diverse cultures, ___________ uses it differently.
A.all of which B. each of which
C.all of them D. each of them
4.It is the third time that she has won the race, __________ has surprised us all.
A.that B. where
C.which D. what
5.When it comes to the majority of the latest technologies in the next 20 years, __________ has greater potential than the technology being developed in these young people’s company, __________ in my eyes will lead to a revolution.
A.nothing；which B. none；where
C.nothing；where D. none；which
6.The award-winning book was written by a teenager,______________ was, indeed, beyond all expectations.
7.A lot of language learning,______________ has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.
8.______________ is known to us all, failure usually results from laziness while diligence can result in success.
The UK’s 65 plus age group is the 1 (fast) growing crowd within our population, and likely to reach one in four people 2 2040. So the number of ‘Silver surfers’ simply has to rise.
ONS statistics (统计结果) also show that almost 25% of adults aged 65 plus now use social networking sites, but with a third of this age group 3 (live) on their own. These sites are becoming 4 (increase) important for the elderly to look for ways to stay connected to society, 5 has a great positive affect on feelings of isolation(孤独) and depression.
This same age group is the most likely to live apart from others and often easier to feel 6 (lone). A released study showed that as many as 1.2 million elderly people in England 7 (experience) loneliness.
Social media such as Facebook and Skype go a long way to deal with this issue by offering instant interaction (互动) with 8 (love) ones at the click of mouse. Skype can bring grandchildren, who live on the 9 side of the planet, through the Internet into their front room and into their lives.
This age group 10 (trap) by ill health, with 60% of them suffering long-term conditions, so discovering ways to remain in good health as long as possible is a wise choice. Technology has the ability to do this.
1.(2017·天津)My eldest son, ________ work takes him all over the world, is in New York at the moment.
A.that B. whose
C.his D. who
2.（2016·天津）We will put off the picnic in the park until next week， ______the weather may be better.
A.that B. where
C.which D. when
3.（2015·湖南）It is a truly delightful place， ______looks the same as it must have done 100 years ago with its winding streets and pretty cottages.
A.as B. where
C.that D. which
4.（2015·天津）The boss of the company is trying to create an easy atmosphere______ his employees enjoy their work.
A.where B. which
C.when D. who
5.（2015·四川）The books on the desk， ______covers are shiny， are prizes for us.
A.which B. what
C.whose D. the