名词性从句是指在复合句中起名词作用的句子。名词性从句在复合句中可以是主语、宾语、表语、同位语等,因此根据句子的语法功能,名词性从句可以分为主语从句、目的语从句、表语从句、同位语从句。

主语节

定义

复合句中说主语的句子称为主语节。

常见的连接词

That、whether、who、what、whatever、whoever、where、when、why、how等。

用法

(1)表示一般情况时,主句的谓语动词通常是第三人称单数,主句本身的时态不受主句时态的影响。

(2)为了避免句子的头重、脚轻,一般形式给予it放在句子的前面,实际给予放在句子的末尾。常用的句型如下:

It is n. that子句。

It is adj. that子句。

过去分词that子句。

It turned out that.

It hit sb。/occurred to sb。that.

其他

(1)子句的意思完整时引导that,that在句子中没有意义,不能省略。

(2)指导放在句子开头的主语节时,只能使用whether,不能使用if。

(3)what、whatever、whoever在引导主语从句时,句子中既可以说主语也可以说宾语,what在句子中可以说表语。

宾语节

定义

复合句中以一个句子为宾语,这个句子叫做宾语从句。

常见的连接词

That、whether、if、who、whose、which、when、how、what、why等。

用法

(1) that诱导宾语从句。

动词后面的连接词that可以省略。

that除了在介词in、except、but、besides后面构成固定用法外,不能在其他介词后面诱导宾语从句。

如果宾语后面有补语,就要用形式宾语it代替,在补语后面放子句。

如果动词后面有多个宾语,则可以省略第一个that,不能省略第二个和其他that。

Appreciate、like、dislike、love、hate等“好,爱,恨”

(2)whether和if诱导宾语从句。

Whether和if领导的宾语有“否”的意思,经常用在ask、wonder等动词后面,可以互相交换。

[注意]如果只有whether可用,而if不可用:

介词后面。

动词不定式前面。

在后面直接跟随or not的时候。

(3)宾语从句的词序应使用陈述句词序。

在包含目的语句的复合句中,无论主句是陈述句还是疑问句,从句总是使用“连接词陈述句语序”,其标点符号由咒语决定。

(4)时态一致性。

如果主句时态是现在时态,那么目的语句的时态可以根据实际情况决定。

如果咒语是过去时态,目的语节的时态通常也使用过去时态。

剽窃

定义

复合句中用一句话来表达,这个句子叫做剽窃。

常用连接词

That、whether、asthough/Asif、because、who、what、which、whom、whose、whatever、whoever

用法

(1)可以粘在be、look、remain、seem等连接动词后面。

(2)标语用陈述语序作为句子。

(3)This is because.“这是……”意思是,理由或理由。This is why.“这就是.所以……”意味着各种原因造成的后果。

其他

(1) that在标语中一般不能省略。

(2)引导剽窃时使用whether,不使用if。

同位语节

定义

在复合句中充当同位语的句子。同位语用于解释其前面的抽象名词,解释的单词和同位语在逻辑上是主表关系。

常用连接词

That、whether、what、who、how、when、where等。

用法

(1)that诱导同位语从句:

that诱导同位语从句时,从句是一句意思完整的陈述句。

that在文章中不作为句子成分,没有具体的意思,只有连接作用,但不能省略。

(2)whether诱导同位语从句时,不能与if交换。

(3)有时候,同位语不在它解释的名词后面,而是可以用其他单词分开。

目标训练

把下列句子转换成名词性从句,每个空单词。

p>1. Foreigners seem increasingly interested in learning Chinese culture.

→ foreigners are increasingly interested in learning Chinese culture.

2. Cherry told me the computer games had affected her son.

→ Cherry told me the computer games had affected her son.

3. The factory in our town will have to close. What a shock to us all!

→ is a shock to us all the factory in our town will have to close.

4. Peter felt upset because he failed the test yesterday.

→ Peter failed the test yesterday. he felt upset.

→ The reason why Peter felt upset was he failed the test yesterday.

5. Joe suggested that we should have a further discussion about the final decision, which sounded very important.

→ Joe’s suggestion we should have a further discussion about the final decision sounded very

important.

6. No one is allowed to copy or use it without permission, but Carl broke the rule.

→ Carl broke the no one is allowed to copy or use it without permission.

7. “Did your father’s bad attitude make you unhappy?” I asked her.

→ I asked her her father’s bad attitude her unhappy.

8. Do you know why your sister is so sad these days?

→ Do you know makes your sister so sad these days?

9. Helping people in trouble to get out of their sufferings is our duty.

→ people in trouble to get out of their sufferings.

10. When we shall have our meeting is still a question.

→ we shall have our meeting.

11. His invention has greatly changed the way people communicate with each other.

→ has greatly changed the way people communicate with each other.

12. Obviously, without the help of the whole society, there would be no new school buildings.

→ without the help of the whole society, there would be no new school buildings.

key:

1. It seems that

2. What; is that

3. It; that

4. That is why; that

5. that

6. rule that

7. whether; had made

8. what

9. What’s our duty is helping

10. It is still a question when

11. What he invented

12. It is obvious that

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