分词：
就是具有动词及形容词二者特征的词；尤指以-ing或-ed,-d,-t,-en或-n结尾的英语动词性形容词，具有形容词功能，同时又表现各种动词性特点，
如时态,语态、带状语性修饰语的性能及带宾语的性能。
分词分为现在分词和过去分词两种，是一种非谓语动词形式。
现在分词和过去分词主要差别在于：
现在分词表示"主动和进行"，过去分词表示"被动和完成"(不及物动词的过去分词不表示被动，只表示完成)。
分词可以有自己的状语、宾语或逻辑主语等。

现在分词构成形式：
①一般在动词原形末尾加ing，如do→doing、sing→singing、comfort→comforting
②以不发音的e、ue结尾的动词，先去e，再加ing，如dance→dancing、hike→hiking、write→writing、make→ making,take→taking
③以ee、oe、ye结尾的动词加ing，如see→seeing、toe→toeing、dye→dyeing
④以重读闭音节结尾的动词，并且末尾只有一个辅音字母，应双写这一字母，再加ing，如cut→cutting、swim→swimming
注：结尾是x则不必双写，如relax→relaxing
⑤以ie结尾的动词，要把ie变成y再加ing，如die→dying，lie→lying.
⑥以ic结尾的动词，要把ic变成ick再加ing，如picnic→picnicking，traffic→trafficking

过去分词构成形式：
1．规则动词：规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则：
(1)、一般动词，在词尾直接加“ ed ”。（然而要注意的是，过去分词并不是过去式）
work---worked---worked ,  visit---visited---visited
(2)、以不发音的“ e ” 结尾的动词，只在词尾加“ d ”。
live---lived---lived
(3)、以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“ ed ”。
study---studied---studied,cry---cried---cried,try---tried---tried,fry---fried---fried.[1]
(4)、重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ ed ”。
stop---stopped---stopped  ,  drop---dropped--dropped
(5)、以ic结尾的动词，要把ic变成ick再加ed，
picnic→picnicked  ，traffic→trafficked
2 、不规则动词：见不规则动词表

分词用法：
1、分词作状语 　　
分词在句子中作状语，可以表示时间、条件、原因、结果、让步、伴随等。 　　
分词（短语）作状语时，其逻辑主语应与句中主语相一致。
当现在分词表示的动作发 生在谓语动词之前时, 则用现在分词的完成式,且所表示动作与谓语动作同时发生, 则用现在分词的一般式。
完成或被动关系用过去分词。 　　
①现在分词：
The students went out of the classroom, laughing and talking. 　　
②过去分词：
Accompanied by his friend, he went to the railway station. 
Given   better attention, the plants could grow better. 　　

2、“while ( when, once, until, if , though等连词)＋分词”结构 　　
现在分词或过去分词作状语时，有时可以在分词前加while，when, once, although, until, if等连词。 　　
①现在分词：
When leaving the airport, she waved again and again to us.
While waiting for  the train, I had a long talk with my sister about her work…… 　　
②过去分词：
Once recovered, he threw himself into his work and made every effort to do it  well. 　　
Although working very hard, he failed to pass the final exam. If translated word by word, the passage will be difficult to understand. 　　

3、分词作定语 　　
分词作定语时，单个的分词通常放在被修饰的名词之前，分词短语一般置于所修饰的中心词后面。
现在分词修饰的是发出该动作的名词(即与名词有主谓关系)，过去分词修饰承受该动作的名词(即与名词是动宾关系)。 　　 
We will go on with our experiment as soon as we get the added fund. 　　 
This is really an exhausting day to all of us! 　　
We can see the part of the moon lighted by sunlight. 　　
After a night spent in excitement and sleeplessness, I forced myself to take a long walk along the beach the next day. 　　
More and more developing countries established strategic partnership with  developed countries 　　

4、分词作宾语补足语 　　
现在分词在see, watch, hear, observe, notice, feel, find, glimpse, glance等感官动词和look at, listen to等短语动词以及
have, keep, get, catch, leave, set, start, send等使役动词后面与名词或代词构成复合宾语，作宾语补语的成分。
例：I see him passing my house every day.
I caught him stealing things in that shop.
I smelt something burning.

5、分词作表语
分词作表语通常看作形容词来用。
过去分词表示主语的感受或状态，主语多为人。现在分词表示主语的性质，而且主语多为物；
①过去分词：
We were so bored that we couldn’t help yawning.
She felt confused, and even frightened.
②现在分词：
He was very amusing.
That book was rather boring.
很多动词的现在分词都可以作表语：
exciting, interesting, encouraging, disappointing, confusing, touching, puzzling.

宾语从句：
在句子中起宾语作用的从句叫做宾语从句。
宾语从句分为三类：动词的宾语从句，介词的宾语从句和形容词的宾语从句。
宾语从句连接代词主要有：
who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever 等。

宾语从句的特点:
1.宾语从句可以作及物动词、介词及形容词的宾语。
2.宾语从句的语序一律用陈述句语序。
3.连接词that引导宾语从句在句中无词义，不充当句子成份，多数情况下可以省略。
4.whether 和 if 都可引导宾语从句，但 whether后可紧跟or not；whether从句可作介词的宾语。
5.如果从句太长，可以用形式宾语it.

宾语从句的时态:
1.主句是一般现在时，从句根据实际情况使用任何时态。
例句：The headmaster hopes everything goes well.
2.主句是过去时态，从句须用过去时态的某种形式。
例句：She was sorry that she hadn’t finished her work on time.
3.当宾语从句表示的是一个客观真理或者事实时，即使主句是过去时，从句也用一般现在时态。
例句：The teacher told his class that light travels faster than sound.
4. 如果从句的动作发生在主句之前，则从句要用过去完成时态。 

宾语从句的语序:
A. 宾语从句必须用陈述语序。 　　
False: He is wondering when can he finish this difficult job. 　　
Right: He is wondering when he can finish this difficult job.
B. 有时候可以用it 作形式宾语，而把真正的宾语从句放在后面。 　　　
Bad: I thought that he could finish this　job in just two hours impossible. 　　
Good: I thought it impossible that he could finish this job in just two hours.　 
C. 带有宾语从句的复合句的否定形式一般是否定主句。
Bad: I think he doesn’t like the English teacher. 　　
Good: I don’t think he likes the English teacher. 
D.  主句一般过去时态，从句也要用过去时态。
False: He wanted to know why he is crying in the corner. 　　
Right: He wanted to know why he was crying in the corner

宾语从句的否定转移:
主句的谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等。
并且主句的主语是第一人称而且为一般现在时，从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致。
I don’t think he will come to my party.而不能说成I think he won’t come to my party.
我认为他不会来我的舞会.
I don’t believe that man is killed by Jim,is he?
我认为那个人不是Jim所杀的,是不是?
如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式。
We find that he never listens to the teacher carefully,does he?
我们发现他从来不仔细听老师讲课，是不是?

宾语从句中引导词的用法比较
在复合句中作主句的宾语，引导词有：
连词：that (that 常可省略),whether, if
代词：who, whose, what ,which
副词：when ,where, how, why 等。

（一）that引导的宾语从句（在非正式场合that可以省略）
1.可跟that从句做宾语的动词有：
say, think, insist, wish, hope, demand, imagine, wonder, know, suppose, see, believe, agree, admit, deny, expect, explain, order, command, feel, dream, suggest, hear, mean, notice, prefer, request, require, propose, declare, report等。
例句：The boy believes that he will travel through space to other planets.
注意事项：当主句谓语动词是 think, believe, suppose, expect 等词，而宾语从句的意思是否定时，常把否定转移至主句表示。
例句：I don’t think it is right for him to treat you like that.

2.在以下情况中that不能省略
a.当句中的动词后接多于两个由that引导的宾语从句时，第一个that可省，但后面的that不可省。
例句：He said (that) you were too young to understand the matter and that he was asked not to tell you.
b.当主句的谓语动词与that宾语从句之间有插入语时，that一般不可省。
例句：Just then I noticed, for the first time, that our master was wearing his fine green coat and his black silk cap.
c.当that从句是双宾语中的直接宾语时，that不可省。
例句：I can’t tell him that his mother died.
d.注:许多带复合宾语的句子，that引导的宾语从句经常移到句子后部，而用it作形式宾语。
例句：I find it necessary that we should do the homework on time.

（二）由whether,if 引导的宾语从句
1.由whether(if)引导的宾语从句，实际上是一般疑问句演变而来的。意思是“是否”。宾语从句要用陈述句语序。
一般说来，在宾语从句中whether与if可以互换使用，但在特殊情况下if与whether是不能互换的。
例句：I wonder whether(if) they will come to our party.

2.只能用whether，不能用if引导的宾语从句
a.在带to的不定式前
例句：We decided whether to walk there.
b.在介词的后面
例句：I’m thinking of whether we should go to see the film.
c.在动词后面的宾语从句时
例句：We discussed whether we had a sports meeting next week
d.直接与or not连用时
例句：I can’t say whether or not thet can come on time.

3.只能用if不能用whether引导的宾语从句
a.if引导条件状语从句，意为“如果”
例句：The students will go on a picnic if it is sunny.
b.if引导否定概念的宾语从句时
例句：He asked if I didn’t come to school yesterday.
c.引导状语从句even if（即使）和as if（好象）时
例句：He talks as if he has known all about it.

if,whether在宾语从句中的区别
a.if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后,介词后一般不用if
b.少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether. 
c. whether后可以加or not,但是if不可以.
d.在不定式前只能用whether.
（如：I can’t decide whether to stay. 我不能决定是否留下。）
e.避免歧异时,我们常用whether而不用if.

（三）连接代词和连接副词引导的宾语从句
这样的宾语从句实际上是由特殊疑问句变化而来的，宾语从句要用陈述句语序。
用于这种结构的动词常常是：see, say, tell, ask, answer, know, decide, show, find out, imagine, suggest, doubt, wonder, discover, understand, inform, advise等。
1.英语中的连接代词有：who,whom,whose,which,what,在句中担任主语、宾语、定语或者表语。
例句：Can you tell me whom you are waiting for?
2.英语中的连接副词有：when,where,why,how，在句中担任状语的成分。
例句：None of us knows where these new parts can be bought.

简化宾语从句常用六法：
方法一：
当主句谓语动词是hope， decide， wish， choose， agree， promise等，
且宾语从句的主语与主句主语一致时，宾语从句可简化为不定式结构。
例如：
Li Ming hopes he will be back very soon.
→Li Ming hopes to be back very soon.
We decided that we would help him.
→We decided to help him.

方法二：当主句谓语动词是know， learn， remember， forget， tell等动词，
且主句主语与从句主语一致时，宾语从句可简化为“疑问词+不定式”结构。例如：
She has forgotten how she can open the window.
→She has forgotten how to open the window.
注：当主句谓语动词是tell， ask， show， teach等动词，
且后带双宾语，从句主语和间接宾语一致时，宾语从句可简化为“疑问词+不定式”结构。例如：
Could you tell me how I can get to the station？
→Could you tell me how to get to the station？

方法三：当主句的谓语动词是order（命令），require（需要）等时，
如果主句和从句的主语不一致，宾语从句可简化为“名词（代词）+不定式”结构。例如：
The headmaster ordered that we should start at once.
→ The headmaster ordered us to start at once.

方法四：某些动词后的宾语从句，可以用介词加动名词（短语）等其他形式简化。例如：
He insisted that he should go with us.
→He insisted on going with us.
The poor boy doesn’t know when and where he was born.
→The poor boy doesn’t know the time and the place of his birth.

方法五：某些动词后面的宾语从句可转化为“宾语+V-ing形式（作宾语补足语）”结构。例如：
Liu Ping found that there was a wallet lying on the ground.
→ Liu Ping found a wallet lying on the ground.

方法六：动词seem后的宾语从句，也可以用不定式（短语）来简化，但句型需要进行适当的变化。例如：
It seemed that the boys were going to win.
→The boys seemed to win.
除上述方法外，还有一些特殊句式的转化。例如：
I found that it was difficult to learn English well.
→I found it difficult to learn English well.
Soon we found that the ground was covered with thick snow.
→Soon we found the ground covered with thick snow.
They found that the box was very heavy.
→They found the box very heavy

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	人	主语、宾语、表语
	whom	人	宾语
	which	物	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.