專升本英語名詞性從句有主語從句、賓語從句、表語從句、同位語從句等，接下來庫課小編要給大家分享的是專升本英語賓語從句講解，考生可以收藏起來及時(shí)掌握。
賓語從句中引導(dǎo)詞用法
在復(fù)合句中做主句的賓語，引導(dǎo)詞有：
連詞：that (that ?？墒÷?,whether, if;
代詞：who, whose, what ,which;
副詞：when ,where, how, why 等。
(1)連詞引導(dǎo)的賓語從句
He told me (that he would) go to the college the next year 他告訴我他明年上大學(xué)。
I don’t know if there will be a bus any more. 我不知道是否還會有公交車。
Nobody knew whether he could pass the exam. 沒有人知道他是否會通過考試。
①that引導(dǎo)
(在非正式場合that可以省略)
★可跟that引導(dǎo)的從句做賓語的動(dòng)詞有：say, think, insist, wish, hope, demand, imagine, wonder, know, suppose, see, believe, agree, admit, deny, expect, explain, order, command, feel, dream, suggest, hear, mean, notice, prefer, request, require, propose, declare, report等。
如：The boy believes that he will travel through space to other planets.
★賓語從句的否定轉(zhuǎn)移
當(dāng)主句謂語動(dòng)詞是 think, believe, suppose, expect 等詞，而賓語從句的意思是否定時(shí)，常把否定轉(zhuǎn)移至主句表示。并且主句的主語是第一人稱而且為一般現(xiàn)在時(shí),從句的否定詞一般要轉(zhuǎn)移到主句上來,其反義疑問句一般與賓語從句一致。
I don’t think it is right for him to treat you like that.
I don’t believe that man is killed by Jim ,is he?
I expect our English teacher will be back this weekend, won't she/he?
We suppose you have finished the project, haven't you?
如果賓語從句中有某個(gè)含有否定意義的形容詞或副詞(不包含帶有否定前綴的詞，如：unhappy，unfair，dislike等),其反義疑問句要用肯定形式。
We find that he never listens to the teacher carefully, does he?
我們發(fā)現(xiàn)他從不仔細(xì)聽老師講課，是不是?
★當(dāng)主句的主語是第二、三人稱時(shí)，其反義疑問句一般與主句保持一致。
Your sister supposes she needs no help, doesn't she?
You thought they could have completed the project, didn't you?
They don't believe she's an engineer, do they?
She doesn't expect that we are coming so soon, does she?
★在以下情況中that不能省略
a.當(dāng)句中的動(dòng)詞后接多于兩個(gè)由that引導(dǎo)的賓語從句時(shí)，第一個(gè)that可省，但后面的that不可省。
I believe(that)you have done your best and that things will get better.
b.當(dāng)主句的謂語動(dòng)詞與that賓語從句之間有插入語時(shí)，that一般不可省。
Just then I noticed, for the first time, that our master was wearing his fine green coat and his black silk cap.
c.當(dāng)that從句是雙賓語中的直接賓語時(shí)，that不可省。
I can’t tell him that his mother died.
d.當(dāng)it作形式賓語時(shí)
例句：She made it clear that she had nothing to do with him.
許多帶復(fù)合賓語的句子，that引導(dǎo)的賓語從句經(jīng)常移到句子后部，而用it作形式賓語。
e.當(dāng)賓語從句前置時(shí) That our team will win，I believe.
f.當(dāng)that作learn, suggest ,explain ,agree ,wonder ,prove ,mean, state ,feel ,hold等動(dòng)詞的賓語時(shí)。
②由whether,if引導(dǎo)
當(dāng)由一般疑問句充當(dāng)賓語從句時(shí)，用if或whether引導(dǎo)，意為“是否”。
如：I don't know if /whether he still lives here after so many years.我不知道這么多年后他是否還住在這兒。
但在下列情況下只能用whether，不能用if：
a.在具有選擇意義，又有or或or not時(shí)，尤其是直接與or not連用時(shí)，往往用whether(if…or not也可以使用)。
如：Let me know whether /if he will come or not.
(=Let me know whether or not he will come)讓我知道他是否能來。
I don't know whether /if he does any washing or not.
(=I don't know whether or not he does any washing.)我不知道他洗不洗衣服。
I wonder whether we stay or whether wego.我不知道我們是去還是留。
b.在介詞之后用whether。
如：I'm interested in whether he likes English.我關(guān)心的是他是否喜歡英語。
We're thinking about whether we can finish the work on time.我們正在考慮是否能按時(shí)完成這項(xiàng)工作。
c.在不定式前用whether。
如：He hasn't decided whether to visit the old man.他尚未決定是否拜訪那位老人。
He hasn't decided whether to go by bus or by train.他還未決定是乘公共汽車去還是坐火車去。
d.whether置于句首時(shí)，不能換用if。
如：Whether this is true or not，I can't say.這是否是真的我說不上來。
e.引導(dǎo)主語從句和表語從句時(shí)宜用whether。
如：Whether she will come or not is still a question.她是否能來還是個(gè)問題。
f.若用if會引起歧義時(shí)，則用whether。
如：Please let me know if you like the book.
可理解為：If you like the book，please let me know.你如果喜歡這本書，請告訴我。
③只能用if不能用whether引導(dǎo)
a.if引導(dǎo)條件狀語從句，意為“如果”
The students will go on a picnic if it is sunny.
b.if引導(dǎo)否定概念的賓語從句時(shí)
He asked if I didn’t come to school yesterday.
c.引導(dǎo)狀語從句even if(即使)和as if(好像)時(shí)
He talks as if he has known all about it.
(2)連接代詞和連接副詞引導(dǎo)的賓語從句
這樣的賓語從句實(shí)際上是由特殊疑問句變化而來的，賓語從句要用陳述句語序。用于這種結(jié)構(gòu)的動(dòng)詞常常是：see, say, tell, ask, answer, know, decide, show, find out, imagine, suggest, doubt, wonder, discover, understand, inform, advise等。
①連接代詞
Who ,whom ,whose ,which ,what,在句中擔(dān)任主語、賓語、定語或者表語。連接代詞一般指疑問,但what, whatever除了指疑問外,也可以指陳述.
Do you know who has won Red Alert game?
你知道是誰贏得了紅色警報(bào)的游戲么?
The book will show you what the best CEOs should know.
這本書會告訴你最好的執(zhí)行總裁該了解什么.
②連接副詞
When ,where ,why ,how，在句中擔(dān)任狀語的成分。
He didn’t tell me when we should meet again. 他沒有告訴我什么時(shí)候我們能再見面。
Could you please tell me how you use the new panel?
你能告訴我怎么用這個(gè)新的操作盤嗎?
None of us knows where these new parts can be bought.
沒有人知道這些的新的零件能在哪里買到。
賓語從句的語序
賓語從句的語序是陳述句語序即：連接代詞/副詞+主語+謂語+其他成分。
I don’t know what they are looking for.
Could you tell me when the train will leave?
賓語從句的時(shí)態(tài)
(1)時(shí)態(tài)：主句是一般現(xiàn)在時(shí)，從句根據(jù)實(shí)際情況使用任何時(shí)態(tài)。
例句：The headmaster hopes everything goes well.
(2)主句是過去時(shí)態(tài)，從句須用過去時(shí)態(tài)的某種形式。
例句：She was sorry that she hadn’t finished her work on time.
(3)當(dāng)賓語從句表示的是一個(gè)客觀真理或者事實(shí)時(shí)，即使主句是過去時(shí)，從句也用一般現(xiàn)在時(shí)態(tài)。
例句：The teacher told his class that light travels faster than sound.
★注意：運(yùn)用虛擬語氣的情況在表示“建議 suggest 、advise、propose; 要求demand 、desire、request;決定 decide; 命令 order、command、require; 堅(jiān)決主張 insist”等動(dòng)詞后跟賓語從句，用(should)+v.(虛擬語氣)
如：I suggested that you(should)study hard.
He ordered that we should go out at once.
虛擬語氣用在賓語從句中：動(dòng)詞 wish, suggest ,order ,insist , propose,等詞后面的賓語從句表示的是一種虛擬語氣，賓語從句中的動(dòng)詞動(dòng)作表示的只是一種愿望、要求。
如：I wish she would be on my side. 我希望她能站在我一邊。
I wish I could help him. 我希望我能幫助他。
He insisted that all of us should be there on time by any means. 他堅(jiān)持要我們大家想盡辦法按時(shí)去那兒。
動(dòng)詞 demand, suggest, order, insist, propose 后面的從句中，"should" 可以省略。
如：The teacher suggested that we (should) clean the blackboard after class. 老師建議我們課后把黑板擦了。
He ordered that the students wash the clothes every week by themselves. 他要求學(xué)生每周都要自己洗衣服。
簡化賓語從句的方法
把含有賓語從句的復(fù)合句轉(zhuǎn)化為簡單句，使其與原句意思相同(或相近)的試題。下面就介紹幾種常用的簡化賓語從句的方法：
(1)當(dāng)主句謂語動(dòng)詞是hope， decide， wish， choose， agree， promise等，且賓語從句的主語與主句主語一致時(shí)，賓語從句可簡化為不定式結(jié)構(gòu)。例如：
Li Ming hopes he will be back very soon.
→Li Ming hopes to be back very soon.
We decided that we would help him.
→We decided to help him.
(2)當(dāng)主句謂語動(dòng)詞是know， learn， remember， forget， tell等動(dòng)詞，且主句主語與從句主語一致時(shí)，賓語從句可簡化為“疑問詞+不定式”結(jié)構(gòu)。
例如：
She has forgotten how she can open the window.
→She has forgotten how to open the window.
注：當(dāng)主句謂語動(dòng)詞是tell， ask， show， teach等動(dòng)詞，且后帶雙賓語，從句主語和間接賓語一致時(shí)，賓語從句可簡化為“疑問詞+不定式”結(jié)構(gòu)。例如：
Could you tell me how I can get to the station?
→Could you tell me how to get to the station?
(3)當(dāng)主句的謂語動(dòng)詞是order(命令)，require(需要)等時(shí)，如果主句和從句的主語不一致，賓語從句可簡化為“名詞(代詞)+不定式”結(jié)構(gòu)。例如：
The headmaster ordered that we should start at once.
→The headmaster ordered us to start at once.
(4)某些動(dòng)詞后的賓語從句，可以用介詞加動(dòng)名詞(短語)等其他形式簡化。例如：
He insisted that he should go with us.
→He insisted on going with us.
The poor boy doesn’t know when and where he was born.
→The poor boy doesn’t know the time and the place of his birth.
(5)某些動(dòng)詞后面的賓語從句可轉(zhuǎn)化為“賓語+V-ing形式(作賓語補(bǔ)足語)”結(jié)構(gòu)。例如：
Liu Ping found that there was a wallet lying on the ground.
→ Liu Ping found a wallet lying on the ground.
(6)動(dòng)詞seem后的賓語從句，也可以用不定式(短語)來簡化，但句型需要進(jìn)行適當(dāng)?shù)淖兓?。例如?/span>
It seemed that the boys were going to win.
→The boys seemed to win.
除上述方法外，還有一些特殊句式的轉(zhuǎn)化。
例如：
I found that it was difficult to learn English well.
→I found it difficult to learn English well.
Soon we found that the ground was covered with thick snow.
→Soon we found the ground covered with thick snow.
They found that the box was very heavy.
→They found the box very heavy.
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