下面将以最简单的图文形式讲清楚什么是“主从句”、什么是“单复句”、什么是“定语从句、名词从句、状语从句”。
单句——拥有一套“主谓结构”(一个时间);
复句——拥有两套以上“主谓结构”(两个以上时间);
主句——可以独立存在的单句
从句——不可以独立存在的单句(必须寄生在主句身体里)
引导词——链接从句到主句身体的手铐(从句身份标志)
一、名词性从句——从句占位
主语从句: (主-谓-宾)-谓-宾——占主语位
That he finished writing the composition in such a short time surprised us all.
他在如此短的时间内写完作文使我们十分惊讶。
宾语从句:主-谓-(主-谓-宾)——占宾语位
I don't know if there will be a bus any more.
我不知道是否还会有公交车.
宾语从句:主-谓-宾-(主-谓-宾)——占第二宾语位
He told me that he would go to the college the next year.
他告诉我他下一年上大学.
二、定语从句(形容词性从句)——从句不占位,而是插入
主语部分:主(主-谓-宾)-谓-宾——插入主语里的定语从句
The first English book that I read was "The Prince and the Pauper" by Mark Twain.
我读的第一本书是马克·吐温写的《王子与贫儿》。
宾语部分:主-谓-宾(主-谓-宾)——插入宾语里的定语从句
I'll never forget the days I spent in the countryside.
我永远不会忘记我在农村度过的日子。
宾语部分:主-谓-宾-宾(主-谓-宾)——插入第二宾语里的定语从句
Someone sent me a book from Seoul that Jack Nicklaus had written called "My Way, " which taught me how to grip the clubs and how to swing.
有人从首尔给我寄来了一本杰克·尼克劳斯(Jack Nicklaus)写的《我的路》(My Way),这本书教会了我如何握杆和挥杆。
三、状语从句
(主-谓-宾),主-谓-宾
When I met the Gills, I had been gardening for nearly ten years.
我结识吉尔一家时,我已经几乎做了十年的园艺。
主-谓-宾(主-谓-宾)
How can I love myself when I look like this?
既然我这么一副样子,我怎么能爱我自己?
英语句子的结构很简单,在任何情况下一个句子(非并列句)只有一个主谓结构。只是在这个主谓结构的基础上可以综合使用以上三种从句,同时结合三种非谓语动词短语进一步修饰细化增添诸多细节,在配合主句和从句谓语动词各种时态变化(主动、被动、真实、虚拟)从而导致句子变得复杂起来。
但是只要你能够抓住主句的主谓结构,那么在复杂的句子都可以被清晰的解析理解。
本文作者谢瑞,著有《英语思维:解密英语语法的原理》一书和《英语思维:十课建立完美语法体系》系列视频课程,欢迎转载,转载请注明出处。
推荐于2017-12-16
1)主语从句可直接位于主语的位置,如果从句较长,谓语又较短,可用it作形式主语,而将从句放在句末。常见的句型有:
*It is a fact\a pity\a question\good news that...
*It seems\appears\happened\has turned out that...
*It is clear\important\likely\possible that...
*It is said\reported\estimated\has been proved that...
It is said that comic books create a connection between people of the same generation.
It seems that the performance is very useful.
2)what引导的主语从句表示“...的东西时”,一般不用it作形式主语。
What we lack is experience.
3)what,who,when,why,whether等词含有各自的疑问意义,但它们引导的主语从句,都用陈述语序。
How the plan is to be carried out should be discussed again.
I did know why I felt like crying.
2.宾语从句
1)宾语从句可位于及物动词、介词和某些形容词后。连词that常可省略。介词后一般接疑问词引导的宾语从句。in that(因为),except that(除了),but that(只是)已构成固定搭配,其他介词后一般不接that引导的宾语从句。
*I promised that I would change the situation.
*All this is different from what American young people would say about friendship.
*He is certain that watching so much television is not good for children.
*This article is well-written except that it is a bit too long.
2)宾语从句后如有宾补,要用形式宾语it来代替,而把宾语从句移至宾补之后。
He has made it clear that he would not change his mind.
3)在think,believe,suppose,expect等动词后的宾语从句中,如果谓语是否定的,一般将否定词移至主句谓语上,宾语从句则变成肯定形式。
He didn't think that the money was well spent.
3.表语从句
表语从句出现在结构为“主语+系动词+表语从句”的句子中。表语从句除可用that,what,when,why,whether,how等引导外,还可由because,as if(though)等引导。that常可省略。如主句主语为reason,只能用that引导表语从句,不可用because.
Perhaps the most important thing to remember is that there is no one common type of life in America.
The reason why so many people died there is that there were not enough food supplies.
It looks as if successful international cultural communication will make the world smaller.
4.同位语从句
同位语从句用于对前面出现的名词作进一步说明,一般用连词that引导,由于先行名词的意义不同,也可用whether,who,when,where,what,why,how等引导。常见的先行名词有fact,idea,belief,news,hope,conclusion,evidence,suggestion,order,problem,report,decision.有时由于谓语较短,将同位语从句位于谓语之后。
She finally made the decision that she would join the fashion show.
I had no idea how many books I could borrow at a time.
The news came that their team had won the championship.
5.定语从句
定语从句所修饰的先行词可以是名词或代词,也可以是一个句子。定语从句通常位于先行词之后,由关系代词或关系副词引导。
*限制性定语从句
限制性定语从句修饰先行词,对先行词起修饰作用,紧接先行词之后,无逗号,若省去,原句意思不完整。引导定语从句的关系代词有who,whom,whose,which,that等。who,whom,whose用于指人,whose有时也可指物,相当于of which;which用于指物;that既可指人也可指物,但只用于限制性定语从句中。关系代词除了引导定语从句,替代先行词外,还在从句中担任主语、宾语、定语等。
The computers and cables which make up the Internet are owned by people and organizations.
Those who live alone or who are sick may have trouble in getting close to other people.
The girl whose parents died in an accident is living with her grandmother.
1)当先行词是all,anything,everything,something,nothing等不定代词或先行词前有first,last,any,few,much,some,no,only以及形容词最高级修饰时,只能用关系代词that引导从句。
That is all that I've heard from him.
He's the first person that I'm going to interview this afternoon.
2)关系代词的省略
在从句中作宾语的关系代词常可省略。关系代词紧跟介词,作介词宾语时不可用that,只可用which或whom引导从句,并且不可省略,但当介词位于宾语从句句末时,作为介词宾语的关系代词仍可用that,也可省略。
This is one of those things with which we have to put up.
This is one of those things (which\that) we have to put up with.
3)引导定语从句的关系副词有when,where,why等。关系副词在从句中作状语,意义上相当于一个“介词+which”的结构。
Even in comic books where(=in which) there are no words,the stories are fully expressed through the drawings.
No one knows the reason why(=for which) he was so angry that day.
*非限制性定语从句
非限制性定语从句既可修饰先行词,也可修饰整个主句,起补充说明作用,与主句之间有逗号隔开,若省去,原句意思不受影响。不可用that引导非限制性定语从句。关系词不可省略。
Every object has a gravitational pull,which is rather like magnetism.
*“介词+which\whom\whose”引导的定语从句
“介词+which\whom\whose”可引导限制性定语从句,也可引导非限制性定语从句,该结构中介词的选择取决于从句谓语动词的固定搭配,或先行词的习惯搭配。
This is the computer on which he spent all his savings
It is written by a person with whom we are all familiar.
*as引导的定语从句
as引导的定语从句主要用于“such...as”及“the same...as”的结构中,代替先行词是人或物的名词。as引导非限制性定语从句时,代替整个主句,从句可位于主句之前、之后或中间。
These are not such problems as can be easily solved.(as代替先行词problems)
As is mentioned above,no single company or group can control what happens on the Internet.(as代替主语)
6.状语从句
*时间状语从句
引导时间状语从句的从属连词和词组有:
1)when,whenever,while,as,after,before,since,till,until,once等。
We have learnt quite a lot about it since we came here.
2)as soon as,hardly(scarcely)...when,no sooner...than,each(every) time,the moment,immediately(that)等。
As soon as I sent an e-mail message,I received positive responses.
The moment he heard the good news,he jumped with joy.
*地点状语从句
引导地点状语从句的连词是where,wherever.
Wherever she went,she took her little daughter with her.
*原因、结果和目的状语从句
1)引导原因状语从句的从属连词有:because,as,since,now(that),seeing that,considering that,in that等。
Considering that he is a freshman,we must say he is doing well.
2)引导结果状语从句的连词有:so...that,such...that,so that,that,so等。
Mickey Mouse is so attractive that the children are reluctant to leave.
3)引导目的状语从句的连词有:so that,in order that,for fear that,lest等,从句常使用may,might,can,could,would等情态动词。
We got up early this morning so that we could catch the first bus to the railway station.
*条件和让步状语从句
1)引导条件状语从句的连词和词组有if,unless,as(so) long as,on condition that,in case,provided(providing) that,supposing等。
As long as you have the right equipment,you can use a telephone line to transmit computer data.
2)引导让步状语从句的连词和词组有though,although,whether,even though,even if,no matter what(when,how...),whatever(whenever,wherever,however....)等。though,even if等引导状语从句可转换成含有as的部分倒装结构,具有强调意义。其结构为“形容词(副词、动词、名词)+as+主语+谓语”。
No matter what you may say,I would not change my mind.
Young as he is,he is quite experienced in this work.(=though he is young)
Child as he is,he can speak English fluently.(=though he is a child)
*方式状语从句
引导方式状语从句的连词有as,just as,as if,as though等。as if,as though引导的状语从句中,谓语动词常用虚拟语气,表示与事实相反。
The young man made the experiment just as the teacher had taught him.
Everything went on as usual as if nothing had happened.