在复合句中修饰名词和代词的从句叫做定语从句.
被定语从句修饰的名词或代词叫做先行词.
引导定语从句的关系代词有who, whose, whom, which, that, as ;
引导定语从句的关系副词有when, where, why;
关系代词在定语从句中做主语,宾语,定语.
关系副词在定语从句中做状语.
一.由 who, 引导的定语从句,who在从句中做主语(口语中也可做宾语),
修饰表示人的先行词. 例如:
This is the man who helped me.
Do you know the comrade who spoke just now ?
The boy who//whom we saw yesterday is John’s brother.
二.whom引导的定语从句,whom在从句中作宾语,修饰表示人的先行词,
口语中可以省略.
The doctor (whom) you are looking for is in the room.
The person (whom) you just talked to is Mr. Li.
=The person to whom you just talked is Mr. Li. (介词后 whom不能省略)
The babies whom the nurses are looking for are very healthy.
(固定短语中的介词一般不省略,介词仍放在动词之后)
三.whose引导的定语从句,whose在从句中作定语,修饰表示人或物的先行词.
Do you know the woman whose name is Mary.
Pass me the dictionary whose cover is black.
四.that引导的定语从句,that在从句中做主语或宾语,修饰表示人或物的先行词,
作宾语时可省略,不能放在介词后面作宾语.
The letter (that//which) I received was from my father.
I can’t find the letter that//which came this morning.
Do you still remember the days (that//which)we spent together ?
This is the man that//who helped me.
The house (that//which) we live in is not large.
=The house in which we live is not large.
The doctor (that//whom //who)you are looking for is in the room.
五. which引导的定语从句,which在从句中做主语,也可做宾语,或介词的宾语,
修饰表示物的先行词. 先行词可以是词、短语、句子.
This is the book (which/that ) you want.
The building which//that stands near the river is our school.
The room in which there is a machine is a workshop.(介词后面的which不能省略)
The house (which/that) we live in is not large.
This is the watch (which/that ) he was looking for.
(在含有介词的动词固定词组中,介词只能放在动词之后,不能放在which之前 )
六、that 和which 都可以修饰表示物的先行词, 但是下列情况只能用that.
①. 先行词为不定冠词all, few, little, much, everything, nothing 等.
All (that) you have to do is to practise every day.
There isn’t much (that) I can do.
②. 先行词被序数词或形容词的最高级所修饰时.
The first lesson (that) I learned will never be forgotten.
This is the best film (that ) I have ever seen.
③. 先行词被all, any, every, few, little, no, some 等不定代词修饰时.
I have read all the books (that) you gave me.
④. 先行词被the only, the very, the last, the same 等修饰时.
The white flower is the only one that I really like.
This is the very book that I want to read.
This is the same book that I want to read. (同一本书)
----This is the same book as I want to read.
⑤. 当主句以who或 which 开头的特殊疑问句时,定语从句that 引导.
Who is the man that is standing there ?
Which of us that knows something about physics doesn’t know this ?
⑥先行词既有人又有物时.
We talked about the persons and things that we could remember.
⑦time做先行词,前面如果有序数词或 last 来修饰时,定语从句用 that 来引导或省略；如果没有序数词或 last 来修饰时,既可用 when 也可用that来引导.
This is the last time ( that ) I shall give you a lesson.
The first time ( that ) I saw him was in 1972.
It’s time ( that ) we got up.
七、as 引导的定语从句,
as用作关系代词和关系副词引导限定性定语从句,在从句中作主语、定语、表语、或状语,常与the same … as; such… as , so… as , as… as 连用.
I like the same book as you do.
I want to have such a dictionary as he has.
I shall do it in the same way as you did.
He is the same age as you ( are ).
He will give you such information as will help you.
Such students as you have mentioned should be criticized.
=Students such as you have mentioned should be criticized.
在the same…后也可用that引导定语从句,但意义有所不同：
that 引出的定语从句,指的是与先行词同一事物；而 as引出的定语从句是与先行词相似的'同类事物.
I want to use the same tool that I used yesterday.
I want to use the same tool as I used yesterday.
八、由when 引导的定语从句,修饰表示时间的先行词,when为关系副词,
做定语从句的时间状语.
I still remember the day when I first came to Beijing.
I still remember the day on which I first came to Beijing.
( 介词＋which可以代替 when)
I’ll never forget the time when we worked on the farm.
[I remember the days which//that we spent together.]
九、由where 引导的定语从句,修饰表示地点的先行词,where为关系副词,
做定语从句的地点状语.
This is the place where we lived for five years.
The factory where his father works is in the west of the city.
The factory in which his father works is in the west of the city.
( 介词＋which可以代替where)
[ This is a place which//that I wanted to visit. ]
十、Why引导的定语从句,why做原因状语.
I know the reason why he came late.
The reason why he was late was that he was ill.
非限定性定语从句
1. who 指人,做主语.
Yesterday I met Li Ping, who seemed to be very busy.
2. whom 指人, 作宾语.
He had many friends, many of whom had been in the universities.
3. whose 指人, 作定语.
The Chairman’s daughter, whose name is Ann, gave Tom a smile.
4. which 指物, 做主语,宾语.
His speech, which bored everyone, went on and on.
The speech, which he had written on the paper, seemed endless.
5. where 指地点, 作状语.
Galileo lived in the city of Pisa, where there is a leaning tower about 180 feet high.
6. when 指时间,作状语.
The meeting will be put off till next month, when we will have made all the preparations.
7. as 做主语,表语,宾语; 先行词可以是一个词,一个短语或一个句子.
To shut your eyes to facts, as many of you do, is foolish.
As we all know, he studies very hard.
As 引导的定语从句可放在主句前,也可放在主句后.在很多情况下已经
构成固定搭配.
As everybody can see as was usual
As can be seen as I expected
As is known to all, as may be imagined
as you know as is expected
as has been said before as is reported
as is often said as is announced
限定性定语从句和非限定性定语从句的区别：
限定性定语从句是先行词在意义上不可缺少的定语,如果去掉,主句的意思就不完整或失去意义.这种从句和主句的关系十分密切,写时不用逗号分开.
非限定性定语从句和主句的关系不十分密切,只是对先行词作些附加的说明,如果去掉,主句的意思依然清楚.这种从句和主句之间往往用逗号分开,一般不用that 引导.
as和 which 引导的非限定性定语从句的比较：
1. 非限定性定语从句位于句未,而且as 和which 在从句中作主语、宾语、表语时可互换.
He is a farmer, as/which is clear from his manner.
This elephant is like a snake, as/which anybody can see.
2.which 引导的非限定性定语从句一般放在句未,而as 引导的非限定性定语从句可放在句未,也可放在句中、句首. 放在句首时不能用which 替换.
Crusoe lost his dog, which made him very sad
Taiwan is part of China, as/which is known to all.
As we have seen, oceans cover more than 70 percent of the earth.
3.as引导非限定性定语从句时,意为“这一点、这件事”,常与 see, hope,expect,know,guess等动词搭配；而which引导非限定性定语从句时与主句有一种因果关系,可译为“所以……”.
Cyprus, as you all know, is in the Mediterranean.
Bamboo is hollow, which makes it very light.
4. as引导非限定性定语从句并在从句中作主语时,其后面的谓语动词大多数必须是连系动词.如果从句谓语动词是行为动词,则必须用which.
He married her, as was natural.
She refused to take the medicine, which made her mother angry.
一、形容词：用来说明或修饰名词、代词的词称为形容词。
1、形容词的句法作用：作句子中名词的定语、句子的表语以及宾语补足语。
2、形容词在句子中的位置：
1)、在句子中的位置以及作用
⑴作定语时放在名词的前面,且音节少的词放在音节多的词之前。如：a big yellow wooden wheel(一个黄色的大木轮)
⑵作表语时放在连系动词之后。如：The price sounds reasonable.(这个价格听起来算是合理)
⑶作宾语补足语时放在宾语之后。如：We must try our best to keep our environment clean.(我们必须尽力保持我们的环境清洁)
⑷后置的情况：
①修饰复合不定代词时放在代词之后。如：Something serious has happened to him.(他发生了严重的事故)
②与表示“长、宽、高、重、老、远离”的词连用时形容词后置。如：He’s 1.8 metres tall.(他身高1.8米。)The moon is about 380,000 kilometres away from the earth.(月球离地38万公里)
2) 、多个形容词修饰同一个名词的顺序：
二、副词
1、副词：用来说明事情发生的时间、地点、原因、方式等含义或说明其它形容词或副词程度的词叫做副词。
2、副词的分类（见下表）：
3、副词在句子中的位置以及作用：
（1）作状语
1.时间副词：一般放在句首或句尾,注意,early、late、before、later、yet等一般放在句尾,already、just一般放在动词的前面。如：We will visit the Great Wall tomorrow.(我们明天要去参观长城) / They have already been to the UK twice.(他们去过英王国两次) / Soon the lost boy found his way back home.(不久迷路的孩子找到了回家的路)
2.地点副词：一般放在句尾,但here、there还可放在句首。如：There you can see thousands of bikes running in all directions(方向).(在那里,你可以看到成千上万的自行车朝各个方向流动) / The frightened wolf ran away.(受到惊吓的狼逃开了)/ He walked out quietly and turned back soon.(他悄悄地走了出去,很快又返回)
3.方式副词：一般放在行为动之后,suddenly可以放在句首、句尾或动词之前。如：Old people can hardly walk as quickly as young people.(老年人几乎不可能走得和年轻人一样快) / Suddenly he saw a light in the dark cave(山洞).(突然,在黑黢黢的山洞里,他看见了一丝亮光)
4.程度副词：修饰动词时,放在动词之前；修饰形容词或副词时,放在形容词或副词之前。但注意,enough总是放在被修饰的形容词或动词的后面；only位置比较灵活,总是放在被修饰的词的前面。如：I nearly forgot all about it if he did not tell me again.(如果他不再次告诉我,我几乎把那事全忘了) / It was so strange that I could hardly believe my ears.(它那么奇怪一直我都不能相信我的耳朵) / She got to the station early enough to catch the first bus.(她早早地赶到车站赶上了首班车)
5.频度副词：一般放在be动词之后或者助动词与主要动词之间,但sometimes、often等还可以放在句首或句尾,usually可放在句首,once可放在句尾,twice、three times等一般放在句尾。如：Sometimes I get up early.(我有时起得早)/ The workers usually have lunch at the factory.(工人们通常在厂里吃午饭) / Take this medicine twice a day.(这种药一天吃两次)
6.疑问副词：用于对句子的状语进行提问,位置总是在句首。如：When and where were you born?(你何时何地出生？)/ Why did little Edison sit on some eggs?(小爱迪生为什么要坐在鸡蛋上？)/ How do you do?(你好！)
7.连接副词：用来引导主语从句、宾语从句和表语从句,在从句中作状语。How I am going to kill the cat is still a question.(我打算怎样杀死那只猫还是个问题)/ That is why everyone is afraid of the tiger.(那就是人人都害怕老虎的原因) / He wondered how he could do it the next day.(他不知道第二天怎样做那事)
8.关系副词：用来引导定语从句,在从句中作状语。如：This is the place where Mr Zhang once lived.(这就是张先生曾经住过的地方)/ Please tell me the way how you have learned English so well.(请告诉我你的英语是怎样学得这么好的方法)
9.其它副词：too“也”,用在句尾；also放在动词前；either “也不”,放在句尾；nor“也不”,放在句首；so“如此,这样”,放在形容词、副词前；on/off“开/关”放在动词之后；not放在be之后、助动词之后、不定式或动名词之前；maybe/perhaps放在句首；certainly放在句首或动词之前。如：He went to the Palace Museum and I went there,too.(他去了故宫博物院,我也去了) / Maybe your ticket is in your inside pocket.(也许你的票就在你的里边衣袋里) / --Tom doesn’t have a computer. –Nor do I.(汤姆没有计算机,我也没有。)
(2)作表语：
地点副词一般可以作表语,放在be等连系动词之后,说明人物所处的位置。如：I’m very sorry he isn’t in at the moment.(很抱歉,他此刻不在家)/ I have been away from my hometown for nearly 20 years.(我离开家乡有将近20年了) / Jim is over there.(吉姆就在那边)
(3)作定语：
时间副词(如now、then)以及许多地点副词都可以作名词的定语,放在名词的后面。如：People now often have their festival dinners at restaurants.(现在的人们经常在餐馆里吃节日晚宴) / Women there were living a terrible life in the 1920s.(在二十世纪20年代那儿的女人过着可怕的日子)
(4)作宾语补足语：
地点副词一般可以作宾语补足语。如：Put your dirty socks away, Jim! They are giving out bad smell!(吉姆,把你的脏袜子拿开！它们在散发着臭气。) / Father kept him in and doing his lessons.(父亲把他关在家里做作业)
[注意] “动词+副词”的宾语如果是代词,则该副词应该放在代词之后。如：He wrote down the word.(他写下了那个词。)→He wrote it down.(他把它写了下来。)
==形容词变副词的规律
a.一般的形容词在结尾加ly变为副词。例如：careful-carefully
b.以元音加e结尾的单词要去e在加ly。例如：true-truly
c.辅音加y结尾的单词去y变i在加ly。例如：angry-angrily
d.单音节y结尾直接加ly。例如：shy-shyly
e.以le结尾的单词直接将e变为y。例如：terrible-terribly
f.形容词、副词同形：hard, fast, friendly, late, early, lovely, long。这部分请同学们注意，其中很多单词加ly之后就变成其他意思的单词了。例如：hardly就变成“几乎不”的意思，是小学阶段五大隐形否定词（few，little, never, seldom, hardly）之一。
三、形容词副词的原级、比较级和最高级
1、分类：形容词和副词有原级、比较级和最高级三级。
原级变为比较级和最高级有规则变化和不规则变化两种。
2、规则变化:
(1)单音节和部分双音节形容词和副词,在原级的后面加上er,est构成比较级和最高级。
a)直接加er,est：
b)以重读闭音节结尾的,要双写最后一个辅音字母,后加er,est：
c)以辅音字母+y结尾的,先把y改为i再加上er,est：
(2)两个音节或两个以上的音节的,在原级前加more/most.
3、不规则变化:
4、形容词和副词的原级、比较级和最高级的用法：
(1)讲述某人/物自身的情况时,用原级。基本句型是：
主语(sb./sth) + 谓语动词 + (very/too/so/quite/rather…) + 形容词/副词原级 +….
如：He is very old now.(他现在很老了) / They ran quite fast.(它们跑得相当快) / The weather looks rather bad.(天气看上去相当糟) / I am so happy!(我是如此的快乐)
☆表示两者之间没有差别时,使用句型：
主语(第一个人物) + 谓语动词 + as + 形容词/副词原级 + as + 第二个人物 +….
如：He is as excited as his younger sister.(他和他妹妹一样兴奋)/ Lily rode her bike as slowly as an old lady.(莉莉骑车像老太太一样慢)/ They picked as many apples as the farmers (did).(他们摘的苹果和农民一样多)
☆表示第一个人比不上第二个人时,使用句型：主语(第一个人物) + 谓语动词(否定式) + as / so + 形容词/副词原级 + as + 第二个人物+….
如：He is not so / as excited as his younger sister.(他没他妹妹那么兴奋) / Lily did not ride her bike so / as slowly as an old lady. (莉莉骑车不像老太太那样慢) / They didn’t pick so / as many apples as the farmers (did). (他们摘的苹果不如农民多)
(2) 讲述两者有差异,第一个人物超过第二个人物时,用比较级。基本句型：
主语(‘A’)+谓语动词+(much/a little/even/still)+形容词/副词比较级+than+第二个人物(‘B’)+….
如：A modern train is much faster than a car.(现代的火车比轿车快多了) / This book didn’t cost me more than that one.(这本书花费我的钱不比那本多)
讲述两者有差异,第一个人物不及第二个人物时,用比较级。句型是：
主语(‘A’) + 谓语动词 + less+ (多音节形/副)比较级 + than + 第二个人物(‘B’) +….
如：I think English is less difficult than maths.(我认为英语不比数学难)/ Do you think it less important to learn a foreign language?(你认为学外语不那么重要吗？)
(3)讲述某人/物是一群之中最突出的一个时,用最高级。句型是：
主语(sb./sth) + 谓语动词 +(the) +形容词/副词最高级 +in / of ….
如：The Changjiang River is the longest in China.(长江是中国最长的河流) / He jumped (the) highest of the three (boys).(三个男生中他跳得最高)
5、关于比较等级的重要注释：
1、如果动词是及物或不及物动词,则后面用副词；如果后面是连系动词,则后面用形容词。如：This car is the fastest of the four.(形容词)(这辆汽车是四辆之中最快的)/ This car runs (the) fastest of the four.(副词)(这辆汽车是四辆之中跑得最快的)
2、“比较级+and+比较级”表示“越来越……”。如：The weather is getting warmer and warmer.(天越来越温暖了)
3、“the+比较级…,the+比较级…”表示“越…就越…”。如：The more trees we plant,the better it will be.(我们栽的树越多,情况就会越好)/ The harder you try,the greater your progress is.(你越是努力,进步就越大)
4、一般的形容词或副词的比较级前面可以加much/a little/even/still,而表示数量的more之前还可以加some/ any/ no/ one/ two/ many/ several/ a lot等词。如：It is much colder today than yesterday.(今天比昨天冷多了)/ Would you like some more coffee?(你还要些咖啡吗？)/He did not eat any more.(他没有再吃)
5、more than / less than分别可以理解为“多于/少于”,相当于副词,more than=over; less than=under.如：I lived in New York for more than four months.(我在纽约生活了四个多月)
6、“one of the +最高级+名词(复数)”整个短语为单数含义,谓语要用单数形式。如：One of the oldest houses has been burnt in a fire.(最古老的一幢房子在一场大火中被烧毁了)
7、“Which / Who+动词+形/副,□,□or□?”句型中,如果有两个选项,形/副用比较级,如果有三个选项,形/副用最高级。如：Who has more books, Lin Tao or Han Mei?(林涛和韩梅谁的书最多？)/ Which is the heaviest,a pig,a horse or an elephant?(猪、马、象哪个最重？)
8、上下文中含有both/either/neither/two/twins等表示两个事物的词时,用比较级,而且往往还要加the；含有all/none/no one/ every 等表示三个或三个以上事物时,用最高级。如： --Do you like the smaller one?—Neither.(小一点的那个你喜欢吗？一个都不喜欢)/ --Which do you like best? –All of them!(你最喜欢哪个？全部。)
（一）形容词和副词概述
形容词是指那些用来描述或修饰名词(或代词)的一类词。一般放在其所修饰的名词之前。在句中用作定语、表语、补语、状语等。多数形容词具有比较等级。副词是用以修饰动词、形容词、句子以及其他副词的词。在形式上，许多副词带有后缀ly。形容词、副词是中学英语重要语法项目，也是中考重要考查内容。考查重点是：
（1）考查形容词与副词区别。形容词与副词均属修饰性词类，但因被修饰内容有所不同而具备不同的用法，中考非常注重对此进行考查，在单项选择题中出现了大量此类试题。
（2）考查“级”的范围。两个事物进行比较应使用比较级，三个或三个以上事物进行比较应使用最高级。
（3）考查比较级、最高级的注意点：①同类事物进行比较。②将主语排除在被比较的范围之外的比较，因为主语只能和他人或他物相比，而不能和自己相比。③使用最高级时应将主语包含在最高级的范围之内，否则离开这个范围，主语便不能成为这个范围中的最高级。
（4）考查比较级的重要句型。比较级有许多热点句型：from bad to worse/worse and worse(每况愈下)；more and more(越来越多的，越来越……)；the+比较级，the+比较级(越……越……)。
（5）考查as．．．as同级比较句型。
（6）考查比较级的程度修饰语。比较级的程度修饰语有：much，a 1ot，even，still，a bit，a little等。
（7）考查易混形容词与副词的区别
（二）基础知识梳理
1．形容词的用法和位置
1）形容词作表语，表明主语的性质和特征，放在连系动词之后。如：
Computers are very useful in our everyday life．
Leaves turn yellow in autumn．
2）形容词作定语，修饰名词或不定代词，通常放在名词之前，不定代词之后。如：
This is an unhealthy diet．
There is nothing important in today’s newspaper．
3)形容词作宾语补足语，放在宾语之后，与其构成复合宾语。如：
You should keep your classroom clean and tidy．
I found it difficult to get on well with the manager．
2．副词的用法和位置
1）副词修饰动词、形容词或其他副词，表示动作、状态的.特征或某种性质的程度。根据其用途与含义，副词可分为下列六大类：
（1）时间副词。常用的有：ago，before，now，then，soon，already，yet等。
（2）地点副词。常用的有：here，there，up，down，above，below，inside，outside等。
（3）疑问副词。常见的有：where，when，why，how等。
（4）程度副词。常见的有：very，much，so，too，quite，enough等。
（5）方式副词。多由“形容词+ly”后缀构成。如：carefully，quickly，easily，quietly等。
（6）频度副词。常用的有：always，often，sometimes，usually，hardly，never等。
2）副词在句中主要用作状语。也可充当定语、表语等。如：
It’s snowing heavily outside．（状语，修饰动词）
I have never heard such a beautiful voice．（状语，修饰动词）
unluckily, he failed in this physics exam again．（状语，修饰整个句子）
He was too excited to say a word．（状语，修饰形容词）
Class is over．（表语）
The weather here is different from that of Singapore．(定语)
3）程度副词通常位于被修饰的形容词副词之前，但enough则要放在后面。如：
It was much more freezing today than yesterday．
He ran so fast that I couldn’t catch up with him．
We got up early enough to catch the first bus．
4）频度副词通常位于行为动词之前，be动词、助动词和情态动词之后，但一般不放在句末。如：
I have never been late for class．
You must always work like that．
5）几个副词同时出现时，其顺序一般为：方式副词+地点副词+时间副词(也可位于句首)。
