全力直擊英語語法：名詞性從句

7. 否定的轉(zhuǎn)移

若主句謂語動(dòng)詞為Think, consider, wuppose, believe, expect, fancy, guess, imagine等，其后的賓語從句若含有否定意義，一般要把否定詞轉(zhuǎn)移到主句謂語上，從句謂語用肯定式。例如：

I don‘t think this dress fits you well.（我認(rèn)為這件衣服不適合你穿。）

三．表語從句

表語從句在復(fù)合句中作表語的名詞性從句，放在系動(dòng)詞之后，一般結(jié)構(gòu)是“主語＋連系動(dòng)詞＋表語從句”�？梢越颖碚Z從句的連系動(dòng)詞有be, look, remain, seem等。引導(dǎo)表語從句的that常可省略。另外，常用的還有the reason is that… 和It is because 等結(jié)構(gòu)。例如：

1) The question is whether we can make good preparation in such a short time.

2) This is why we can‘t get the support of the people.

3) But the fact remains that we are behind the other classes.

4) The reason he is late for school is that he missed the early bus.

四．同位語從句

同位語從句就是在復(fù)合句中作名詞的同位語的名詞性從句。

1. 同位語從句的功能

同位語從句對(duì)于名詞進(jìn)一步解釋，說明名詞的具體內(nèi)容，一般由that引導(dǎo)，例如：

1) The king‘s decision that the prisoner would be set free surprised all the people.

2) The order that all the soldiers should stay still is given by the general.

2. 同位語在句子中的位置

同位語從句有時(shí)可以不緊跟在它所說明的名詞后面，而是被別的詞隔開。例如：

He got the news from Mary that the sports meeting was put off.

3. 同位語從句與定語從句的區(qū)別

(1) 定語從句中的that既代替先行詞，同時(shí)以在從句中作某個(gè)成分（主語或賓語），而同位語從句中的that是連詞，只起連接主句與從句的作用，不充當(dāng)句中任何成分。

(2) 定語從句是形容詞性的，其功能是修飾先行詞，對(duì)先行詞加以限定，描述定的性質(zhì)或特征；同位語從句是名詞性的，其功能是對(duì)名詞進(jìn)行補(bǔ)充說明。例如：

1) The news that he told me is that Tom would go abroad next year.（他告訴我的消息是湯姆明年將出國。）（第一個(gè)that引導(dǎo)的從句是定語從句，that在從句中作賓語）

2)The news that Tom would go abroad is told by him.（湯姆將出國的消息是他講的。）（同位語從句，that在句中不作任何成分）