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初中三年级英语

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  • 单选题
    — Do you know _____ man in the picture?
    — That is Ding Junhui _____ plays Snooker very well.
    [     ]

    A. a; who
    B. the; who
    C. a; whom
    本题信息:2012年期末题英语单选题难度一般 来源:张雪
  • 本题答案
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本试题 “— Do you know _____ man in the picture?— That is Ding Junhui _____ plays Snooker very well.[ ]A. a; whoB. the; whoC. a; whom” 主要考查您对

定冠词(the)

关系代词

定语从句

等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。
  • 定冠词(the)
  • 关系代词
  • 定语从句

定冠词:
具有确定的意思,用以特指人或事物,表示名词所指的人或事物是同类中的特定的一个,以别于同类中其他的人或事物,或用在世界上“独一无二”的事物的名词前,相当于汉语中的“那个” 或“这个”的意思。它可以和单、复数名词,也可以和不可数的名词连用。
例如:The panda is one of the animals most in danger. 
            Italy is in the south of Europe. 
            The earth goes round the sun. .

基本用法:
1).  用以特指某(些)人或某(些)事物
This is the house where Luxun once lived.
这是鲁迅曾经住过的房子。
2). 用于指谈话双方都明确所指的人或事物
Open the door, please.
请把门打开。
3). 用以复述上文提过的人或事物(第一次提到用“a或an”,以后再次提到用“the”)
Once there lived a lion in the forest. Every day the lion asked small animals to
look for food for him.
从前森林里住着一只狮子。每天这只狮子要小动物们为他寻找食物。
4). 用在序数词和形容词和最高级前
January is the first month of the year.
一月份是一年当中的第一个月。
5). 表示世界上宇宙中独一无二的事物
the sun 太阳 the moon 月亮
6). 指由普通名词构成的专有名词
the West Lake 西湖 the Great Wall 长城
7). 表示方向、方位
in the east 在东方 in the west 在西方
8). 在海洋、江河、湖泊、山脉、海峡、海湾等地理名词前
the Pacific Ocean 太平洋 the Yellow River 黄河
9). 在姓氏复数前,表示一家人
The Bakers came to see me yesterday.
贝克一家人昨天来看我。
10). 和某些形容词连用,使形容词名词化,代表一类人或物
the poor 穷人 the rich 富人
11). 表示演奏乐器时,乐器的前面要加the
play the piano 弹钢琴
play the violin 拉小提琴
[中国乐器名词前不与冠词连用:play erhu(二胡)]
12).某些固定的表达法
in the morning 在早上 in the afternoon 在下午
in the evening 在晚上 go to the cinema 去看电影


关于定冠词The 的用法  :
1 表示特指的人或物
例:Please hand me the key on the desk. 请把桌上的钥匙递给我。
The girl in red is his sister. 穿红色衣服的女孩是他妹妹。
The building over there is the tallest in the town. 那边那幢大楼是这个城里最高的。
I like the music of the film. 我喜欢这部电影的音乐。

2 表示双方都知道的或心中明白的人或物
例:Shut the door, please. 请关门。
Has he returned the book? 那本书他还了吗?
Take the blue one, it is cheaper. 拿那个蓝的,它便宜些。

3 第二次提到某人或某物第一次提到时用不定冠词,第二次提到时要用定冠词。
例:He saw a house in the distance. Jim's parents lived in the house. 他看见远处有一所房子,吉姆的父母就住在那所房子里。
There was once an old fisherman. The old fisherman had a cat. The cat was white. 从前有一个老渔夫。这个老渔夫有一只猫。这只猫是只白猫。

4 用在世界上独一无二的名词前
这类词有:
the sun太阳, the earth地球, the moon月亮, the sky天空, the world 世界
例:The moon goes round the earth. 月亮绕着地球转。
There is not any cloud in the sky. 天空中没有一丝云彩。
It was a fine day in spring. The sun shone brightly. 这是一个晴朗的春日,阳光灿烂。
He is the richest man in the world. 他是世界上最富的人。

5 用在表示方向、方位的名词前
这类词有:
the east东方,the west西方,the south南方,the north北方,the right右边,the left左边
例:The birds are flying to the north. 这些鸟向北方飞去。
The moon rises in the east and sets in the west. 月亮从东方升起,在西方落下。
The wind was blowing from the south. 风从南方吹来。
She lived to the west of the Summer Palace. 她住在颐和园的西边。
Walk along the road and take the first turning on the right. 沿着这条路往前走,在第一个路口往右拐。
He stood at the back of the door. 他站在门背后。
提示 :
方位词成对使用构成平行结构时,不用定冠词。
例:The river is two thousand kilometers long from west to east. 这条河自西向2000公里长。
They traveled through the country from south to north. 他们自南向北在这个国家旅行。

6 用在形容词最高级前
例:Summer is the hottest season of the year. 夏天是一年中最炎热的季节。
She is the best person for the job. 她是最适合这个工作的人。
Hangzhou is one of the most beautiful cities in the world. 杭州是世界上最美的城市之一。
The car is the most expensive of the four. 这部车是四部车中最贵的。

7 用在序数词等前
定冠词用在序数词前,也用在表示序列的next, last等前,还有在表示“同一”或“唯一”等的词前。
例:The first man to land on the moon is an American. 第一个登上月球的人是美国人。
She was the fifth to climb to the top of the mountain. 她是第五个到达山顶的人。
This may be the last chance. 这可能是最后一次机会。
If I miss this train I'll catch the next one. 如果赶不上这趟火车,我就赶下一趟。
He is the only person who knows the secret. 他是唯一一个知道这个秘密的人。
The two coats are of the same colour. 这两件外衣颜色相同。
This is the very book I want. 这正是我要的书。(用very表示强调)
提示:
a 序数词表示“又一”时,前面用不定冠词a(an)
例:He bought a second pair of shoes. 他又买了一双鞋。
He asked a question, then a second, then a third…他问了一个问题,又问了第二个,第三个……
b 序数词用作状语或表语时,前面不加定冠词。
例:George arrived first. 乔治第一个到。
=George was the first person to arrive.
Jim and Jack are both second in the match. 汤姆和杰克在比赛中并列第二。

8 用在单数名词前表示一类人或物,强调整个类别
例:The orange is a kind of fruit. 橘子是一种水果。
The horse is a useful animal. 马是一种有用的动物。
The computer is important to us. 电脑对我们来说是重要的。
提示:
不定冠词+单数名词,不带冠词的复数名词也可表示一类人或物。
例:A car runs faster than a bus. 小汽车比公交车跑得快。
Cars run faster than buses.
A dog is a faithful animal. 狗是忠实的动物。
Dogs are faithful animals.

9 用在乐器名词前,表示演奏
例:She can play the piano. 她会弹钢琴。
He plays the violin very well. 他小提琴拉得很好。
He played the guitar for the children. 他给孩子们弹了吉他。
提示:
但乐器名词表示具体的器物,或表示课程时,不加the.
例:He bought a piano last month. 他上个月买了一架钢琴。
She taught piano in the school. 她在学校里教钢琴。

10 用在江河、海洋、湖泊、群岛、山脉的名称前例:
the Yangtze River 长江
the Red Sea 红海
the West Lake 西湖
the Pacific 太平洋the Himalayas 喜马拉雅山
the Nile 尼罗河
the Rocky Mountains 落基山脉
the South China Sea 南中国海
提示:
例外的情况: Mount Tai泰山 China Daily《中国日报》

11 用在由普通名词和另外一些词构成的国家名称、机关团体、阶级、等专有名词前
例:the Great Wall 长城
the United Nations 联合国
the New York Times 《纽约时报》
the United States of America 美国
the Red Cross Hospital 红十字医院the Olympic Games 奥林匹克运动会
the Shanghai Railway Station 上海火车站
the People's Republic of China 中华人民共和国
the North Pole 北极
the People's Daily 《人民日报》

12 用在某些形容词前,表示一类人或物或某种抽象概念
例:the old 老年人
the happy 幸福的人
the poor 穷人
the aged 老人
the sick 病人
the impossible 不可能的事the young 年轻人
the rich 富人
the blind 盲人
the wounded 伤员
the smooth 顺事
the beautiful 美,美的东西
例:The rich should help the poor. 富人应该帮助穷人。
The good is what people like. 人们总是喜欢美好的东西。
The wounded have been sent to the hospital. 伤员已经被送到医院去了。

13 用在姓氏的复数形式前,表示全家人或这一姓的夫妇二人
例:The Greens will more to the country. 格林一家要搬到乡下去。
The Wangs came to see us yesterday. 王家一家人昨天来看我们。
The Browns are very friendly. 布朗夫妇都很友好。

14 用在表示计算单位的名词前,含有“每,每一”的意思
例:Jim is paid by the hour. 吉姆的工资按小时付。
Eggs are sold by the kilogram. 鸡蛋按千克出售。
This cloth is sold by the yard. 这种布按码出售。
It sells at three dollars the pound. 它以每磅三美元出售。
They sell sugar by the pound. 他们按磅卖糖。

15 用在前面已提到过的人的身体部位或衣着的名词前
这种用法是先把整个对象说出来,然后再说到那个对象的身体的局部或衣着。
结构:动词(hit, pull, pat, strike, catch, hold, take)+sb.+介词(in, on, by, across)+身体部位或衣着
例:She touched him on the shoulder. 她碰了碰他的肩。
He took the girl by the hand. 他拉着小女孩的手。
He hit her on the nose. 他打了她的鼻子。
The stone struck the man in the eye. 石头击中了那人的眼睛。
I caught her by the right hand. 我抓住她的右手。
比较:她拍了拍那男孩的头。
She patted the boy on his head. (误,本结构中身体部位或衣着前不用one's)
She patted the boy on the head. (正)

16 用在逢十的复数数词前,表示年代,也指人的大约岁数
例:The war broke out in the forties. 那场战争发生在40年代。
He went abroad in the 1980s. 他在20世纪80年代出国的。
The old man is in the seventies. 老人大约七十几岁。

17 用在表示自然现象的名词前
这类名词有:
the rain 雨,the wind风, the fog雾,the snow雪, the air空气, the storm风暴,the snowstorm 暴风雪
例:Don't stand in the rain. 不要站在雨中。
The wind blew down the trees. 风把树刮倒了。
The ship sank in the storm. 船在风暴中沉没了。
The rain has cleaned the air. 下雨净洁了空气。
The fog was so thick that we couldn't see the top of the hill. 雾很大,我们看不见山顶。
提示
a 这类名词前有形容词修饰时,可用不定冠词,表示“一场,一阵,一种”
例:A cold wind is blowing from the north. 冷风从北方吹来。
There was a heavy rain last night. 昨晚下了一场大雨。
A heavy snow is falling outside. 外面正下着大雪。
b 这类名词表示一般物质时,不用冠词。
例:Rain falls in summer; snow falls in winter. 夏天下雨,冬天下雪。
Man can't live without air. 没有空气人不能活。

18 与复数名词连用,指整个群体
例: They are the teachers of this school.指全体教师)
They are teachers of this school.(指部分教师)

19 表示所有,相当于物主代词,用在表示身体部位的名词前
She caught me by the arm…… 她抓住了我的手臂。

20 用在某些习惯用语中
例:
in the morning 在上午
in the evening 在晚上
in the field 在田野里
in the country 在乡间
in the sun 在阳光下
in the distance 在远处
on the right 在右边
by the way 顺便说一下
in the front of 在前部
in the daytime 白天
go to the concert 去听音乐会
at (/in) the beginning 开始
at the moment 当时,此刻
all the year round 一年到头
go to the cinema 去看电影
go to the theatre 去看戏
at the weekend 周末in the afternoon 在下午
in the night 在夜里
in the sky 在空中
in the dark 在暗处
in the rain 在雨中
in the shade 在阴凉处
on the left 在左边
all the time 始终
in the middle of 在中间
on the way home 回家途中
all the same 依然
on the whole 总之
at the same time 同时
on the plane 在飞机上
in the year 2008 在2008年
the other day 前几天
at the bottom of 在……底部
in the end 终于
on the one hand, on the other hand 一方面,另一方面
提示:
下面几个短语前不加定冠词:
例:at dawn 在黎明
at night 在晚上
at noon 在正午
at dusk 在黄昏


the的固定用法:
一、在表示方位和方向的名词前面,一般要加the。如:
The sun rises in the east and sets in the west.
二、在乐器名称前面要加the。如:play the piano。
三、在形容词最高级或序数词之前一定要加the。如:the first,the best,等等。
四、表示全体总称(泛指)。
名词或者形容词前加the,可表示该事物的全体,如:the poor指“穷人”。
这一用法本身并不难,难在这一全体所表示的“数”上。
在一开始所举的例子中,the lion指的就是这“一”类,表示的是单数的概念。
但在下面这个例子中,the old又用单形表示了复数概念。
The old are apt to catch cold.
五、另外,定冠词the在固定词组中出现,需要多加注意,逐渐积累。
如:to tell the truth, to go to the theatre, to keep the peace, with the exception of, in the morning……


定冠词用法顺口溜:
特指双熟悉,上文已提及;
世上独无二,序数最高级;
某些专有名,习语及乐器。
注:定冠词常用于以下几种情况:
①“特指”某个或某些人或物前。例如:
The books on the desk are mine.书桌上的书是我的。
“双熟悉”指谈话双方都熟悉的人或事物前。例如:
Where is the teacher?老师在哪里?
②上文已经提到的人或事物前。例如:
I can see a cat.The cat is Lucy's.我能看见一只猫。那只猫是露茜的。
③世界上独一无二的事物前。例如:
The earth goes around the sun.地球围绕太阳转。
④序数词或形容词最高级前。例如:
September is the ninth month of the year.九月是一年中的第九个月。
Mike is the tallest of the three boys.迈克是三个男孩中最高的一个。
⑤由普通名词构成的专有名词前。例如:
the Great Wall(长城),
the People's Park(人民公园)等。
⑥一些习惯用语中或乐器前。例如:
in the day(在白天),
play the piano(弹钢琴)等。

不用冠词的几种情况:
下列情况应免冠,代词限定名词前;
专有名词不可数,学科球类三餐饭;
复数名词表泛指,两节星期月份前;
颜色语种和国名,称呼习语及头衔。
注:
①名词前已有作定语用的this,that,these,those,my,your,his,her,our,their,some等限定词。例如:
this eraser,her pencil-box,some boxes,these women等。
②泛指的不可数名词前一般不用冠词。例如:
meat,rice,water,bread,tea,milk,juice等。
③表示学科的名词前一般不用冠词。例如:
Chinese,maths,English,physics,history等。
④在三餐饭和球类运动前一般不用冠词。例如:
have breakfast/lunch/supper,play basketball/football/volleyball/table tennis/tennis/pingpong等。
⑤复数名词表示泛指时不用冠词。例如:
His parents are both workers.他父母都是工人。
The people in the room are doctors.房间里那些人是医生。
⑥季节、节日、星期、月份前不用冠词。例如:
autumn,winter,Teachers' Day,Children's Day,Sunday,Wednesday,February,October等。
⑦表示颜色、语种和国家的名词前不用冠词。例如:
white,brown,French(法语),Japanese(日语),Australia,America(美国)等。
⑧表示称呼语的名词之前以及职务、头衔的名词后也跟有名词时不用冠词。例如:
What's wrong,Granny?老奶奶,怎么啦?
Doctor Green is a scientist.格林博士是位科学家。



关系代词:
用来引导定语从句。它代表先行词,同时在从句中作一定的句子成分。
关系代词有主格,宾格和属格之分,并有指人与指物之分,它在先行词和定语之间起纽带作用。
主要的关系代词有who,whom,whose,which和that。
①who指人,在定语从句中作主语或宾语;
whom指人,在定语从句中作宾语;
whose在定语 从句中作定语,其先行词既可以是人也可以是物。
例如:The teacher who/whom you want to see has come.
②which指物,在定语从句中作主语或宾语。 
例如:Here is the coat which will be made to you.
③that多指物,有时也指人,在定语从句中作主语或宾语。
例如:I have eaten bread that/which he gave to me.

关系代词的基本用法:
(1)引导定语从句
关系代词代表先行词,同时在从句中作一定的句子成分,例如:
The girl whom I spoke to is my cousin. 跟我讲话的姑娘是我表妹。
(该句中whom既代表先行词the girl,又在从句中作介词to的宾语。)
This is the pencil whose point is broken.这就是那个折了尖的铅笔。
(whose 指物,在限定性定语从句中作定语)
He came back for the book which he had forgotten.他重新回来都忘记了他的那本书。
(which指物,在限定性定语从句中作宾语,可以省略)
(2)which为其先行词。例如:
He said he saw me there, which was a lie.他说在那儿看到了我,纯属谎言。
(3)其他用法
关系代词that在从句中作宾语或表语时可省略, 例如:
I've forgotten much of the Latin I once knew.我过去懂拉丁语,现在大都忘了。
He's changed. He's not the man he was.他变化很大,已不是过去的他了。
注释:关系代词在从句中作宾语时可省略,that在从句中作表语时也可省略。
非限定性定语从句中,不能用that作关系代词。


关系代词的语法注意:
1.常用that 不用which的情况:
①先行词为all, anything, everything, nothing, something等时。
I will do all (that) I can to help you.
②先行词被序数词、形容词最高级或the only, the very等所修饰时。
He was the only person that joined the army in his village that year.
③先行词既有人,又有物时
They talked about the people and the things (that)they remembered in the school.
④当主句是以who 或which开头的疑问句时, 定语从句用that 引导, 以避免重复。
Who is the boy that was here just now?
2. 若被修饰的名词充当从句介词宾语时
介词可提前于引导词之前,此时的引导词只能用whom 或which.
The pencil with which he was writing broke.
3. 当先行词为way时
其后的定语从句用in which或 that引导,也可不用引导词。
I don’t like the way (in which/that) he talks to me.

used to/be used to的分别:
①used to + do:"过去常常"表示过去习惯性的动作或状态,但如今已不存在。
Mother used not to be so forgetful.
②be used to + doing: 对……已感到习惯,或"习惯于",to是介词,后需加名词或动名词。
Scarf is used to taking a walk.(现在习惯于散步)
③used to 的用法 (否定式简写为usedn't) 过去经常,以前常常
This used to be a shabby house. (此房年久失修)
used to,would这两个词语都可以表示过去常做某事,有时可以换用。
used to do 强调过去习惯性的行为或状态,但是现在没有这种行为或状态了。因此,这个短语的内涵是今昔对比。


关系代词的用法:
一、不用that的情况
在引导非限定性定语从句时 (错)The tree, that is four hundred years old, is very famous here.
介词后不能用We depend on the land from which we get our food.

二、只能用that作为定语从句的关系代词的情况
a.在there be 句型中,只用that,不用which。
b.在不定代词,如:anything, nothing, the one, all, much, few, any, little等作先行词时,只用that,不用which。
c.先行词有the only, the very.(恰恰,正好).any. few. little. no. all 修饰时,只用that。
d.先行词为序数词、数词、形容词最高级时,只用that。
e.先行词既有人,又有物时。
Finally, the thief handed everything that he had stolen to the police.那贼最终把偷的全部东西交给了警察。

三、不能用关系代词Which 的几种情况
1.当先行词为all, little, much, few, everything, none 等不定代词时关系代词用that而不用which.
There are few books that you can read in this book store.
2.当先行词既有人又有物时,关系代词用that, 不用which.
He asked about the factories and workers that he had visited.
3.当先行词有形容词最高级修饰时,关系代词用that, 而不用which.
Guilin is one of the most beautiful cities that I have ever visited.
4.当先行词有序数词修饰时,关系代词用that, 不用which.
The first sight that was caught at the Great Wall has made a lasting impression on him.
5.当先行词被the only, the very, the same, the right等修饰时,关系代词用that,不用which.
It is the only book that he bought himself.
6.当先行词被all, every, any, much, little, few, no等修饰时,关系代词用that,不用which.
There is no clothes that fit you here.
7.当主句是以which开头的特殊问句时,定语从句关系代词一般用that而不用which.
Which of the books that had pictures was worth reading?
8.在强调句型" It is ... that ..." 中,只用that,不用which.
It is in this room that he was born twenty years ago.
9.在" such (the same) ... as ..." 句型中,关系代词要用as, 而不用which.
We need such materials as (not which) can bear high temperature.
10.表示" 正如... 那样 "," 正象..." 之意时,用as, 不用which.
Mary was late again, as had been expected.
11.As 引导的定语从句可以放在主句前面,也可以放在主句后面或主句中间,而由 which引导的定语从句只能放在主句后面。
As we all know, oceans cover more than 70% of the earth.

关系代词可以省略的情况:
1.关系代词which,whom,who,that在定语从句中作宾语时可以省略。
Here is the man (who/that/whom)you're been looking for.
2.当that在从句中作补语时可以省略。
She is all (that) a teacher should be.
3.在there be 结构中出现定语从句,或在定语从句中出现there be 时,用作主语的关系代词也可省略。
This is the best dictionary (that) there is in the library.
4.状语的省略
(1)当先行词是reason,而且定语从句中作原因状语时,关系代词可用why,that,也可以省略。
That is the reason (why) I did it.
(2)当先行词是way,且在定语从句中作方式状语时,关系代词可用in which,that,也可以省略。
I don't know the way that/ which leads to the top of the mountains.
(3)当先行词是time时,关系代词可用when,that 或省略。
I don't know the exact time (when/that) the sports meet will take place.
注意:关系代词作宾语有时也不能省略。

关系代词不能省略情况:
1.在介词+whom与介词+which中,whom,which不能省略。
That is the headmaster with whom my father was talking just now.
2.在非限制性定语从句中,作宾语的关系代词也不能省略。
The elephant is like a spear,as anybody can see.
3.在the same ...as,such...as,as...as,the same...that中,as,that即使作宾语,也不能省略I have bought the same bicycle as you have (bought). (指同类用as)
This is the same book that I read the day before yesterday. (that指同一个)
4.当由and,but,or等连词连接两个或两个以上的定语从句修饰一个先行词时,第一个关系代词可省,但第二,第三个不可省略。
This is the book (which) I read yesterday and which I find very interesting.


关系代词格式:
关系代词有主格,宾格和属格之分,并有指人与指物之分。that的用法最广,that可指人也可指物。
见表:

 

限定性
指人

非限定性
指物

限定性
指人或指物

主格

who

which

that

宾格

whom

that

that

属格

whose

of  which
whose

of  which
whose


特殊关系代词的用法:
关系词通常是用来引导定语从句的,但as,than和but这三个词却与which, who, that, where, when和why等典型的关系词不同。
三者本身具有常见的字面意义,前面有名词作先行词,但后面的定语从句却不像典型的定语从句。
这些既像连接词又像关系词的词,我们就姑且称它们为准关系词。
一、 as作为准关系代词出现在the same ... as, such ... as, 和as ... as等结构中。
这时, as前面通常要有名词;
as后面的从句意义上不像是通常的定语从句;
as需要在从句中充当一定的句子成分。
1. the same ... as
        1) as在从句中作主语
  She is the same person as came here last Sunday. 她就是上星期天来这儿的那个人。
  2) as在从句中作宾语
  This is the same watch as I lost while I was doing the sightseeing in Shanghai three months ago. 这块表跟我三个月前在上海观光时丢失的那块一样。
  3) as在从句中作be动词的表语
  China is not the same country as it used to be. 中国已今非昔比。
  4) as在从句中作行为方式状语
  You should learn to do housework in the same way as your mother does it. 你应该学会像你母亲那样做家务活。
2. such ... as
  1) as在从句中作主语
  Let children read such books as tend to make them better and brighter. 让孩子看那些容易让他们变得更好更聪明的书。
  2) as在从句中作宾语
  This is not such an interesting book as you just talked about. 这不是你们刚才谈到的那种有趣的书。
  3) as在从句中作be动词的表语
  Such a bad man as he is will be punished. 像他这样的坏人一定会受到惩罚。
3. as ... as
  1) 第二个as在从句中作主语
  He has as much money as is required. 他要多少钱就有多少钱。
  2) 第二个as在从句中作宾语
  I have as many friends as you (do). 我的朋友和你的朋友一样多。
  3) 第二个as在从句中作be动词的表语
  As is known to all, Taiwan is one of the Chinese provinces。众所周知,台湾是中国的一个省。

二、than作为准关系词 出现在more ... than, less ... than, fewer ... than等结构中。这时, than前面要有名词; than本身有比较意义,而且需要在从句中充当一定的句子成分。
  1. than在从句中作主语
  Take it easy, I have more money than is needed. 放心,我的钱比所需要的还要多。
  2. than在从句中作宾语
  I have more/fewer books than you (do). 我的书比你的多/少。
  3. than在从句中作be动词的表语
  He is a better boy than you (are). 他是一个比你更好的男孩。
三、but作为准关系词 本身含有否定意义,它前面的主句还有另一个否定意义。这时but在意义上相当于“who ... not ...”或“which/that ... not ...”。
  1.定语从句中有be动词,并将其改为含but的复合句时, be动词后面不能再有not
  There is no one who is not conccrned about his future. (= There is no one but is concerned about his future.) 没有人不关心自己的未来?
  2. 定语从句中有can, will, shall, must, may, should, ought to等助动词或情态动词,在将其改为含but的复合句时,这些助动词或情态动词后面不能再有not
  There is nothing that she can’t do. (= There is nothing but she can do.) 没有她做不到的事?
  3. 定语从句中有助动词do, does, did, 在将其改为含but的复合句时,应去掉do, does, did, 还原其后动词的时态及人称变化
  There is no one who doesn’t wish to make great achievements. (= There is no one but wishes to make great achievements.) 谁都希望自己将来能有所成就。
四、which的先行词:关系代词which的先行词可以是一个句子
  He said he saw me there, which was a lie。他说在那儿看到了我,纯属谎言。
说明:关系代词that在从句中作宾语或表语时可省略
  I've forgotten much of the Latin I once knew。 我过去懂拉丁语,现在大都忘了。  


定语从句:
担任定语动能的句子称为定语从句。定语从句在句中的作用相当于形容词,故又称为形容词性从句。
定语从句所修饰的词叫先行词;定语从句一般用关系代词或关系副词来引导,关系词放在先行词与定语之间起连接作用,同时又作从句中的一部分。

定语从句的分类:
根据定语从句与先行词的关系,定语从句可分为限制性定语从句及非限制性定语从句。
限制性定语从句紧跟先行词,主句与从句不用逗号分开,从句不可省去;
非限制性定语从句主句与从句之间有逗号分开,起补充说明作用,如省去,意思仍完整。
1.由that引导的定语从句
一般情况下that可指人或物,可以代替who,whom和which,在从句中作主语或谓语动词的宾语,但不能作介词的宾语。如:
The comrade that(who)is speaking at the meeting is an advanced worker.
正在会上讲话的那个同志是个先进工人。
Is this the doctor that(whom)you talked about yesterday?
这就是你们昨天谈论的那位医生吗?
The letter that(which)I received yesterday was from my father.
昨天我收到的信是我父亲寄来的。
2.由who,whom和whose引导的定语从句
who在从句中作主语,whom在从句中作宾语,whose在从句中作定语。如:
This is the thief who stole my bike.这就是偷我自行车的那个贼。
He is the boy whom you wanted to find.他就是你想要找的那个男孩。
The girl whose mother is a doctor is waiting for you outside.妈妈是个医生的那个女孩在外面等你。
3.由which引导的定语从句
which指物,在从句中作主语或谓语动词的宾语。如:
The book which Mum bought me last week is called“Red Star Over China”.
妈妈上周买给我的那本书名叫《西行漫记》。
The house which Lu Xun once lived in is now the Lu Xun Museum.
鲁迅曾经住过的那所房子现在是鲁迅博物馆。
4.由where,when和why引导的定语从句
where在从句中作地点状语,when在从句中作时间状语,why在从句中作原因状语。如:
I will never forget the day when I joined the League.我永远忘不了我入团的那一天。
He will go back to the school where he studied next week.下周他要回到他曾经学习过的学校。
I don't know the reason why he quarreled with Zhang Lin.我不知道他同张琳吵架的原因。
[注意点]
关系代词在定语从句中作宾语时,关系代词常省去。如:
The play(which)I watched just now had been on twice on Channel
我刚才看的那个戏剧在3频道上已上演了两次。


限定性定语从句:
1. that即可代表事物也可代表人,which代表事物;
它们在从句中作主语或宾语,that在从句中作宾语时常可省略关系词,which在从句中作宾语则不能省略。
而且,如果which在从句中作“不及物动词+介词”的介词的宾语,注意介词不要丢掉,而且介词总是放在关系代词which的前边,但有的则放在它原来的位置
2. which作宾语时,根据先行词与定语从句之间的语义关系,先行词与which之间的介词不能丢
3. 代表物时多用which,但在带有下列词的句子中用that而不用which,这些词包括all, anything, much等,这时的that常被省略
4. who和whom引导的从句用来修饰人,分别作从句中的主语和宾语,whom作宾语时,要注意它可以作动词的宾语也可以作介词的宾语
5. where是关系副词,用来表示地点的定语从句
6. when引导定语从句表示时间
〔注〕值得一提的是,表示时间“time"一词的定语从句只用when引导,有时不用任何关系代词,当然也不用that引导
By the time you arrive in London, we will have stayed there for two weeks.
I still remember the first time I met her.
Each time he goes to besiness trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc.
7. whose是关系代词,修饰名词作定语,相当于所修饰成分的前置所有格
8. 当从句的逻辑主语是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing时,常用there is来引导

非限定性定语从句
非限定性定语从句的作用是对所修饰的成分作进一步说明,通常和主句间用逗号隔开,将从句拿掉后其他部分仍可成立
1. which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分
2. 在引导限定性定语从句时,that有时相当于in which, at which, for which或at which
Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed.
人们对白日做梦的态度正在改变,这与人们对夜间做梦的看法的变化有非常相似之处。
I like the music for the very reason that(for which) he dislike it.
我出于某种原因喜欢这种音乐,而他恰恰与我相反。
We arrived the day that(on which) they left.
刚好我们到的那天他们走了。
3. 有时as也可用作关系代词
4. 在非限定性定语从句中,不能用that,而用who, whom代表人,用which代表事物
限定性定语从句口诀:
(口诀一)  
定语从句真奇妙,  
关系代(副)词来引导,  
定语从句分两种,  
是否限定看逗号。  
(口诀二)  
which指物who指人,  
地点where时间when,  
that人或物均可,  
why之前是reason。  
(口诀三)  
从句当中作宾语,  
whom可以代替who,  
为了句子更简练,  
关系代词可省去。  
(口诀四)  
关系若是表所属,  
whose用法不可无。  
除此之外还有啥,  
whom, which加of。  
(口诀五)  
关系代词不一般,  
介词经常用在前,  
此时不用that, who,  
which, whom才安全。 
引导定语从句的关系词:

关系词

词形

所修饰的先行词 

在从句中所作的成分 

关系代词

who

主语、宾语、表语

whom

宾语

which

主语、宾语、表语

that

人或物

主语、宾语、表语

as

人或物

主语、宾语、表语

whose=of whom/of=which

人或物

定语

关系副词

when

时间词

时间状语

where

地点词

地点状语

why

原因词

原因状语


关系代词的用法 :
1. 关系代词的句法功能 
(1)关系代词在句中作主语
例如:I prefer music that/which has great lyrics 
(2) 关系代词在句中作宾语 
例如:I like music that I can sing along with. 
(3)关系代词在句中作表语
例如:The house is not the one (that) it used to be.
2. 关系代词在从句中作名词的定语
例如:Is she the teacher whose hair is very short? 
3. 关系代词的用法 
(1)who和whom的用法:二者都用于指人。Who在定语从句中作主语、宾语,
whom 在定语从句中作宾语。Whom在从句中能坐介词的宾语,而who则不能。
例如:
I happened to meet the professor (who/whom) I got to know at a party 
in the shopping center yesterday.
(2)whose的用法:一般指人,有时也指物。在定语从句中作定语。 
例如:I have got a friend whose brother is training for the Olymoics.
(3)which的用法:一般指物,在定语从句中作主语、宾语、偶尔作定语。 
例如:The photo which we liked best was taken by Zhao Min. 
(4)that的用法:指人或物,指人时可与who、whom互换,指物时可与that互换。
在从句中可作主语、宾语,还可作表语。 
例如:It is a book (that/which) no one really likes. 
4. 宜用who不宜用that的情况 
(1)先行词是指人的不定代词时 
例如:Congratulations to our winners and thanks to everyone who entered the competitions.  
(2) 先行词指人时且含有较长的后置定语     
例如:The boy was crying hard who lost his way while looking for his mother.
5. 在以下情况中,关系代词常用that
(1)先行词为all, little, few, none 及some-, any-, no-与thing所组成的复合单词时,只能用that。
例如:There is nothing that will stop us making progress. 
(2)先行词前有only, some, any等形容词修饰时,只能用that。
例如:This is the only problem that we can’t work out.
(3)先行词前由形容词的最高级或序数词修饰时,只能用that。
例如:This is the most interesting book that I have ever read.
(4)先行词同时包括人和物时,只能用他和她,
例如:Lu Xun and his works that we are familiar with are considered great.
6. 只能用which不能用that的情形
(1)当非限制性定语从句中的先行词指物时,只能用which
例如:The pencil-case, which I bought last week, is missing.
(2)关系代词前面有介词时,只能用which
例如:The tree under which we used to take a rest has been cut down.
(3)先行词本身就是that时
例如:I don’t like that which he did.

关系副词的用法 
1. when的用法:它的先行词通常是time, day, morning等。有时也可和一些介词一起引导定语从句。
例如:Do you remember the time when she went abroad?
2. where的用法:它的先行词通常有place, spot, room等。
例如:I like places where the weather is always warm.
3. why的用法:它的先行词只有reason。Why时常也可以省略。
例如:Tell me the reason why she was late.