高中英語(yǔ)知識(shí)點(diǎn):Since從句和名詞性從句的用法(2)
名詞從句的用法
一.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。
It 作形式主語(yǔ)代替主語(yǔ)從句,主要是為了平衡句子結(jié)構(gòu),主語(yǔ)從句的連接詞沒(méi)有變化。而it引導(dǎo)的強(qiáng)調(diào)句則是對(duì)句子某一部分進(jìn)行強(qiáng)調(diào),無(wú)論強(qiáng)調(diào)的是什么成分,都可用連詞that。被強(qiáng)調(diào)部分指人是也可用who/whom。
例如:
It is a pity that you didn’t go to see the film.
It doesn’t interest me whether you succeed or not.
It is in the morning that the murder took place.
It is John that broke the window.
2. 用it 作形式主語(yǔ)的結(jié)構(gòu)。
(1) It is +名詞+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+從句
It is natural that… 很自然…
It is strange that… 奇怪的是…
(3) it is +不及物動(dòng)詞+從句
It seems that… 似乎…
It happened that… 碰巧…
(4) it +過(guò)去分詞+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. (right)
That President Jiang will visit our school next week is said. (wrong)
(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. (right)
That he failed in the examination occurred to him. (wrong)
(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. (right)
Whether he is wrong or not doesn’t matter. (wrong)
(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? (right)
Is that will rain in the evening likely? (wrong)
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:
1) What you said yesterday is right.
2) That she is still alive is a consolation.
二.賓語(yǔ)從句
賓語(yǔ)從句就是在復(fù)合句中作賓語(yǔ)的名詞性從句,通常放在主句謂語(yǔ)動(dòng)詞(及物動(dòng)詞)或介詞之后。
1. 作動(dòng)詞的賓語(yǔ)。
(1) 由that引導(dǎo)的賓語(yǔ)從句(that 通常可以省略)
例如:
I heard that be joined the army.
(2) 由what, whether (if) 引導(dǎo)的賓語(yǔ)從句
例如:
1) She did not know what had happened.
2) I wonder whether you can change this note for me.
(3) 動(dòng)詞+間接賓語(yǔ)+賓語(yǔ)從句
例如:
She told me that she would accept my invitation.
2. 作介詞的賓語(yǔ)。
例如:
Our success depends upon how well we can cooperate with one another.
3. 作形容詞的賓語(yǔ)。
例如:
I am afraid (that) I’ve made a mistake.
That 引導(dǎo)的從句常跟在下列形容詞后作賓語(yǔ):
Anxious, aware, certain, confident, convinced, determined, glad, proud, surprised, worried, sorry, thankful, ashamed, disappointed, annoyed, pleased, hurt, satisfied, content 等。也可以將此類(lèi)詞后的that 從句的看作原因狀語(yǔ)從句。
4. It 可以作為形式賓語(yǔ)。
It 不僅可以作為形式主語(yǔ),還可以作為形式賓語(yǔ)而真正的賓語(yǔ)that 從句則放在句尾,特別是在帶復(fù)合賓語(yǔ)的句子中。
例如:
We heard it that she would get married next month..
5. 后邊不能直接跟that 從句的動(dòng)詞。
這類(lèi)動(dòng)詞有Allow, refuse, let, like, cause, force, admire, condemn, celebrate, dislike, love, help, take, forgive等。這類(lèi)詞后可以用不定式或動(dòng)名詞作賓語(yǔ),但不可以用that引導(dǎo)的賓語(yǔ)從句。
例如:
I admire their winning the match. (right)
I admire that they won the match. (wrong)
6. 不可用that從句作直接賓語(yǔ)的動(dòng)詞。
有些動(dòng)詞不可用于“動(dòng)詞+間接賓語(yǔ)+that從句“結(jié)構(gòu)中,常見(jiàn)的有Envy, order, accuse, refuse, impress, forgive, blame, denounce, advise, congratulate等。
例如:
He impressed the manager as an honest man. (right)
He impressed the manager that he was an honest man. (wrong)
7. 否定的轉(zhuǎn)移
若主句謂語(yǔ)動(dòng)詞為T(mén)hink, consider, wuppose, believe, expect, fancy, guess, imagine等,其后的賓語(yǔ)從句若含有否定意義,一般要把否定詞轉(zhuǎn)移到主句謂語(yǔ)上,從句謂語(yǔ)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。)
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