主語(yǔ)從句如何使用
主語(yǔ)從句如何使用
主語(yǔ)從句即在復(fù)合句中充當(dāng)主語(yǔ)成分的句子,那么你對(duì)主語(yǔ)從句的使用方法了解多少呢?以下是由學(xué)習(xí)啦小編整理關(guān)于主語(yǔ)從句的用法的內(nèi)容,希望大家喜歡!
主語(yǔ)從句的用法
主語(yǔ)從句 定義:在句子中擔(dān)當(dāng)主語(yǔ)的是一個(gè)從句,這個(gè)從句就叫做主語(yǔ)從句。
主語(yǔ)從句是在復(fù)合句中充當(dāng)主語(yǔ)的從句,通常放在主句謂語(yǔ)動(dòng)詞之前或由形式主語(yǔ)it代替,而本身放在句子末尾。
1. It 作形式主語(yǔ)和it引導(dǎo)強(qiáng)調(diào)句的比較
?、僦髡Z(yǔ)從句常用it作形式主語(yǔ),一般常用句型為:It is+{名詞/形容詞/過(guò)去分詞}+主語(yǔ)從句例如:
It is still a question whether she will come or not.
It is strange that you should like him.
It is still unknown which team will win the match.
另外,還有一些比較多見(jiàn)的結(jié)構(gòu):
It turned out that……;
It has been proved that……;
It happened/occurred that……;
It is well-known that……等等
②而強(qiáng)調(diào)句則不同,它的結(jié)構(gòu)是:It+be+被強(qiáng)調(diào)部分+that+從句
強(qiáng)調(diào)主語(yǔ):It is the times that produce their heroes.時(shí)勢(shì)造英雄
強(qiáng)調(diào)賓語(yǔ):It is English that Prof.Lin teaches us.
強(qiáng)調(diào)狀語(yǔ):It was in shanghai that I saw the film.
判斷是否是強(qiáng)調(diào)句有一個(gè)方法,就是將that以后的“句子的其余部分”拿出來(lái)單獨(dú)看,看有沒(méi)有缺成分,缺的是什么成分,再把謂語(yǔ)動(dòng)詞后面that前面的那部分,帶到你認(rèn)為缺成分的地方,如果放進(jìn)去是一句完整的句子了,那就說(shuō)明是強(qiáng)調(diào)句。
2. 用it 作形式主語(yǔ)的結(jié)構(gòu)
(1) It is +名詞+that從句
It is a fact that … 事實(shí)是……
It is an honor that …非常榮幸
It is common knowledge that …是常識(shí)
(2) it is +形容詞+that從句
It is natural that… 很自然……
It is strange that… 奇怪的是……
(3) it +不及物動(dòng)詞+that從句
It seems that… 似乎……
It happened that… 碰巧……
(4) it is+過(guò)去分詞+that從句
It is reported that… 據(jù)報(bào)道……
It has been proved that… 已證實(shí)……
3.主語(yǔ)從句不可位于句首的五種情況
(1) if引導(dǎo)的主語(yǔ)從句不可居于復(fù)合句句首。
(2) It is said , (reported) …結(jié)構(gòu)中的主語(yǔ)從句不可提前。例如:
It is said that President Jingo will visit our school next week.
(3) It happens…, It occurs… 結(jié)構(gòu)中的主語(yǔ)從句不可提前。例如:
It occurred to him that he failed in the examination.
(4) It doesn’t matter how/whether …結(jié)構(gòu)中的主語(yǔ)從句不可提前。例如:
It doesn’t matter whether he is wrong or not..
(5) 含主語(yǔ)從句的復(fù)合句是疑問(wèn)句時(shí),主語(yǔ)從句不可提前。例如:
Is it likely that it will rain in the evening?
4. What 與that 在引導(dǎo)主語(yǔ)從句時(shí)的區(qū)別
What 引導(dǎo)主語(yǔ)從句時(shí)在從句中充當(dāng)句子成分,如主語(yǔ).賓語(yǔ).表語(yǔ),而that 則不然。例如:
What you said yesterday is right.