高考英语 名词性从句和定语从句区别知识点分析

专题（四）名词性从句和定语从句

名词性从句

名词性从句的语法功能：在句中充当名词成分,也就是说做主语, 宾语,表语, 同位语.于是就形成了主语从句,宾语从句,表语从句和同位语从句.

引导名词性从句的引导词可分为三类：

一.引导词本身无词义,在从句中无地位. 这类词只有一个,that

二.词本身有词义但在从句中无地位, 如:whether , if 和as if

三. 词本身有词义且在句中有地位. 如:who , whom , whose , what , which , when , where , why , how

例句如下:

1). That he suddenly fell ill last week made us surprised .

上星期他突然病倒使我们都感到吃惊. ( that 引导主语从句)

2). It doesn't matter so much whether you will come or not .

你是否来关系不太大. ( whether 引导主语从句, it 作形式主语)

3). Who will go is not important .

谁要来不重要. (who 引导主语从句)

4). The question was who could go there .

问题是谁能去那儿. (who 引导表语从句)

5). He said ( that ) the text was very important and that we should learn it by heart .

他说课文非常重要,我们应当背诵下来. ( 两个that 引导的都是宾语从句)

6). The fact that he had not said anything surprised everybody.

他什么也没说使大家感到吃惊. ( that 引导同位语从句)

运用名词性从句是应当注意的几个问题:

1. whether 与if 引导名词性从句是略有区别, if 不能引导主语从句, 不能与or not 连用,不与不定式连用.

2. 宾语从句应当注意时态的呼应, 主句为与动词时过去时,宾语从句也应当是过去时(过去完成时,过去进行时, 过去将来时)

3.宾语从句否定前移问题: 当主句中有: I think ( suppose , expect , believe , imagine , guess ) 时.应当否定这些词,其实就是对后面从句的否定,应当注意的是主语必须是"I " , 其他主语同于一般动词的否定. 如: I don't think you are right . (我认为你不对.)

I don't believe they will win the game . (我相信他们不会赢得这场比赛.)

She supposed that we couldn't arrive so early . ( 他认为我们不会到到达如此早.)

4. 同位语从句一般用that 引用,先行词一般为: news , fact , idea , suggestion , promise.当先行词为是可以用其他引导词. 如:

Everyone knows the fact the earth goes round the sun .( 众所周知地球围绕太阳转.)

I have no idea when he will be back . (我不知道他什么时间回来.)

练习

I. 找出各句中的从句并指出是何种从句

1.I don't if I can do it .

2. What he is doing seems very difficult .

3. The important thing is how we can improve our studies .

4. Mr Li always thinks of how he can do more for the people .

5. The news that she was pretending to be sick was whispered from one to another .

6. I was surprised at what he said .

7. That's what you are going to do first .

8. That'll be decided who is the monitor of our class at the class meeting .

9. When the sports meet is to be held is still under discussion .

10. Here comes the news that some foreigners from America will visit our school .

答案：

1.if I can do it 宾语从句

2 What he is doing 主语从句

3 how we can improve our studies 表语从句

4 how he can do more for the people 介词宾语从句

5 that she was pretending to be sick 同位语从句

6 what he said 介词宾语从句

7 what you are going to do first 表语从句

8 who is the monitor of our class at the class meeting宾语从句

9 When the sports meet is to be held 主语从句

10 that some foreigners from America will visit our school 同位语从句

II.把下列各句填入适当的引导词

1.---Could you tell me _____ the man is ?

--- He is my brother.

2. I didn't know _____ he was coming until yesterday .

3.----It's still a question ____ we shall have our sports .

--- It's said we shall have it next week .

4. The news _____ he was chosen made us happy .

5. The doctor asked ____ medicine you have taken .

6. This is _____ they solved the problems in the city .

7._____ our football team will win is uncertain yet .

8. _____ frightened us most was _____ two lights appeared suddenly in the darkness .

9. My mother asked ____ was the matter with me .

10. The reason I didn't come to the meeting was ____ I got ill .

答案：1. who 2. that 3.when 4.that 5.what 6.how 7.Whether 8.What 9. what 10 that III.翻译下列各句

1. .肯定他将来参加宴会。

2. 决定我们什么时候去北京了吗？

3. 他什么也没说使大家都很奇怪。

4. 无疑问史密斯先生很健康。

5. 很清楚你错了。

6. .这是我们所想要的东西。

7. 我想你对。

8. .我想知道他是否能帮助我。

9. .天气不是昨天那样了。

10. 问题是我们怎么能完成任务。

答案：

1.It is sure that he will come to the party .

2.Is it decided when we will go to Beijing ?

3.The fact that he didn't say anything surprised everyone .

4.There is no doubt that Mr Smith is in good health .

5.It is clear that you are wrong .

6.This is what we want .

7.I think you are right .

8. I ' like to know whether you can help me or not .

9. The weather is not what it was yesterday .

10. The problem is how we can finish the task .

形容词从句

形容词从句在句中起形容词作用.形容词的主要功能是作定语,所以,形容词从句又叫定语从句。

定语从句所修饰的词叫做先行词,定语从句必须有引导词引导,先行词一定与引导词有关系，引导词应能代替先行词，在从句中做成分，因此,形容词从句又叫关系从句.

形容词从句中的引导词尤为重要。一是引导从句，作为从句的重要标志；二是代替先行词;三是在从句中充当成分。

由在从句中的地位划分,引导词可分为三类: 一. 主语,宾语引导词. 如: who , whom , what , that , which , as 二.状语引导词. 如: where , when , why 三.定语引导词. 如: whose

例如: 1). She is the girl who sings best of all . 她是所有人唱歌最好的那个小女孩.

引导词who 代替先行词the girl , 在定语从句中作主语.

2). Please pass me the notebook whose cover is red . 给我书皮是红色的那本书.

引导词whose 代替先行词the notebook , 在从句中作定语.

3). A steel plant is a place where steel is made . 钢厂是生产钢的地方.

引导词where 与先行词the place 有关系,相当于in the place , 在句中作状语,可以理解为: steel is made in the place .

4). As everyone knows , he is honest . 众所周知,她很诚实.

引导词as 代替先行词he is honest (先行词为一句话), 在定语从句中作know的宾语.

需要注意的几个问题:

1. 先行词为"人"时,引导词用who ,whom ; whose 即可代替"人"又可代替"物", that 即可指"人"又可指"物"; which 指"物"或"整句"; as 前面常有such 或the same.

例如: 1). I won't tell them the news , which will make them sad . 我不愿意告诉他们那个消息,会使他们悲伤的. ( which 指物)

2). Bamboo is hollow , which makes them very light . 竹子是空的,这会使他们轻. ( which代替整句话: bamboo is hollow )

3). He must be from Africa , as can he seen from skin . 从皮肤上看,他一定来自于非洲.( as 指全句: he must be from Africa )

4). Li Hua was one of the girls who have the chances .李华是那些有机会的小女孩之一.( who 指人)

5). That is the boy whose father died three years ago . 那就是三年前他爸爸死的那个小男孩.(whose 指人,相当于: the boy's )

6). Do you have a bottle whose lid is red ? 你有瓶盖是红色的瓶子吗? ( whose 指物)

2. that 和which 都能指物, 指物是可以互换, that 也能指人.但下列情况必须用that.

1)先行词为all , anything , everything , nothing , something 等不定代词.

2)先行词有序数词或形容词最高级修饰.

3)先行词被the only , the very , the same , the last 等词修饰.

4) 先行词既有人也有物.

5) 以who 开头的疑问句

例如:

I watched all the glasses that were on the table fall off onto the floor .

我看到了所有桌子上的杯子掉到了地板上.

The parks are the clearest parks that you can imagine .

这些公园是你能想象的最干净的公园.

Corn was not the only food that was taken to Europe .

玉米并不是被传往欧洲的唯一食物.

They talked about things and persons that they remembered .

他们谈起所记起的人和事.

以下情况时能用which

1) 前面紧接介词时.

2) 引导非限定从句时

例如:

This is the book about which we are talking now .

这是我们正谈的那本书.

Tom studies hard and is ready to help others , which his parents expect.

汤姆努力学习并乐于助人,这正是他父母所盼望的.

练习题

I.填入适当的引导词

1. Please pass me the notebook ____ cover is yellow .

2. Li Hua was one of the girls ____ have the chance to go abroad.

3.He must be form Africa , ____ can be seen from his skin .

4. Air ,___ we breathe every day , is around us all the time .

5. 1949 was the year ____ the New China was born .

6.I don't know the reason ____ she looks unhappy today .

7. This is the village _____ my father worked three years ago .

8.I still remember the day ____ the old scientist took us to the lab for the first time .

9.The letter ______ I received yesterday is from my sister .

10.The woman _____ you saw in the park is our geography teacher .

答案：1. whose 2.who 3.as 4.which 5.when 6.why 7.where 8.when 9.that 10.whom II.合并各组句子

1. The factory is a small one .

The factory stands near the river .

2. Have you answered the letter ?

You got that letter two weeks ago .

3. I'll never forget the day .

On that day I joined the League .

4.We are not allowed to do so .

Tell me the reason .

5. The boy student is very young .

He won the game .

6. The town has become a famous city .

He grew up in the town .

7. I spend my childhood in Suzhou .

I have never been there again since I left .

8. He is leaving for Wuhan to meet his daughter .

He has not seen the girl for years .

9. Do you know the man ?

His son is a famous scientist.

10. My uncle bought the bicycle last week .

The bicycle has been stolen .

答案：

1.The factory which is a small one stands near the river .

2. Have you answered the letter that you received two weeks ago ?

3. I'll never forget the day when I joined the League .

4. Tell me the reason why we are not allowed to do so.

5. The boy who won the game is very young .

6.The town in which he grew up has become a famous city .

7.I I have never been in Suzhou again since I left , where I spent my childhood.

8.He is leaving for Wuhan to meet his daughter whom he has not seen for years .

9.Do you know the man whose son is a famous scientist?

10. The bicycle which my uncle bought last week has been stolen .

III .改错

1. The story happened in November on which the weather was very cold .

2. Stella is one of the engineers who is fit for the task .

3. Even at that moment he didn't come to our help , who made us disappointed .

4.Mr Williams has two sons , both of whom looks like him .

5.When we passed the place which the dead boy lay , each of us saluted.

答案：1.on改为in 2. is 改为are 3.who改为which 4.looks改为look 5.which改为where