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英语必修一第四单元课文中的定语从句
语言是约定俗成的，大家都这么说或用，就成为了一种规则。在英语中能省略that的情况，有以下两种情况。 1.宾语从句中，引导词that可以省略。2.定语从句中，引导词that / which在从句中做宾语时可以省略。而主语从句，表语从句，同位语从句不能省略。语言是约定俗成的，没有为什么。
英语宾语从句的用法总结
英语宾语从句宾语从句的时态问题
1）当主句的谓语动词是一般现在时时，其宾语从句的时态可以是任何适当的时态。所以，宾语从句的时态应根据实际情况而定。eg.
She says (that) she works from Monday to Friday. 她说她从周一至周五上班。
（从句是一般现在时）
She says (that) she will leave a message on his desk. 她说她要在他桌子上留个便条。
（从句是一般将来时）
She says (that) she has never been to Mount Emei. 她说她从来没有去过峨嵋山。
（从句是现在完成时）
2）当主句的谓语动词的时态是一般过去时的时候，其宾语从句的时态一般要用任一适当的过去时态。eg.
He said there were no classes yesterday afternoon. 他说昨天下午没有课。
从句是一般过去时）
He said (that) he was going to take care of the baby. 他说他会去照看这个婴儿。
（从句是过去将来时）
He said (that) they were having a meeting at that time. 他说他们那时正在开会。
（从句是过去进行时）
但是当宾语从句是表达客观真理和规律的句子时，其时态仍旧用一般现在时。eg.
The teacher told us(that) nothing is difficult if we put our hearts into it.
老师告诉我们世上无难事,只怕有心人。
She said(that) her father is twenty-eight years older than her.
她说她父亲比她大二十八岁。
He said that light travels much faster than sound.
他说光比声音传播得快。
He told me that I must go to school on time every day.
他告诉我我必须每天按时上学。
注意：当主句的谓语动词是think或believe，宾语从句要表达否定时，要把从句的否定转移到主句上。 eg.
我认为他不会帮你学英语的。
I don't think he is going to help you with your English.
不可以翻译成：
I think he isn't going to help you with your English.
如果宾语从句有它的补语时，宾语从句用it代替，从句后置。其句型为：主语+谓语 + it +补语+宾语从句。 eg.
I think it necessary that we learn English grammar.
我认为我们学习英语语法是必要的。
He thinks it a good job that he becomes a teacher.
他认为当老师是个很好的职业。
实战演练
1. Could you tell me if it _____ tomorrow?
A. rains B. is raining C. will rain D. rain
2. The teacher told his students the sun_____ in the east.
A. rise B. rises C. rose D. risen
3. I'm sure___ he will be here on time.
A. if B. that C. whether D. when
4. Can you tell me ______?
A. what's the matter with him B. what the matter with him is
C. what happened with him D. what with him happened
5. Let me tell you ______.
A. how much is the car B. how much does the car cost
C. how much did I pay for the car D. how much I spent on the car
6. Peter knew _______.
A. whether he has finished reading the book
B. why the boy had so many questions
C. there were 12 months in a year
D. when they will leave for Paris
7. Bruce says _______ he can come at 9:00 tomorrow.
A. when B. what C. that D. what time
8. Dave, could you teach me ______ to search the Internet?
A. that B. how C. when D. why
9. Could you tell me ______?
A. where is the nearest railway station
B. where the nearest railway station was
C. where the nearest railway station is
D. where was the nearest railway station
10. He was afraid ______ he would forget his Chinese.
A. if B. when C. how D. that
11. Mike asks Lin Yang _______ he has been in Beijing.
A. how long B. where C. how D. that
Keys：1-5 C B B A D 6-11BCBCDA
英语宾语从句例句及翻译
宾语从句
宾语从句的连接词：that
结构：主语+谓语+宾语（陈述语序）
注意：
引导词为that ；
语序为v.+主语+谓语 由if、whether引导宾语从句；
主句为现在时 从句为任一时态。
从属连词
连接宾语从句的从属连词主要有that,if,whether，和疑问词（what， how， where， when ...)。
that引导表示陈述句的宾语从句，
if和whether，whether...or not引导表示“是否”的一般疑问句的宾语从句。
关联代词
连接代词主要有who,whom,whose,what,whoever,whomever,whosever,whatever,whichever等。
连接代词一般指疑问，但what,whatever除了指疑问外，也可以指陈述。
关联副词
连接副词主要有when,where,why,how,whenever,wherever,however等。
例句：
He didn’t tell me when we should meet again.
他没有告诉我什么时候我们能再见面。
注：宾语从句通常跟在名词或代词后面。
高一英语知识点总结大全
宾语从句是名词性从句的一种。在主从复合句中充当宾语，位于及物动词、介词或复合谓语之后的从句称为宾语从句。宾语从句分为三类：动词的宾语从句，介词的宾语从句和形容词的宾语从句。下面是我为你整理的，一起来看看吧。
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1.语序
无论主句是陈述句还是疑问句，宾语从句都必须使用陈述语序，即“主句+连词+宾语从句主语+谓语+……”句式。根据连线词在从句中所担任的不同成分，可分为以下四种：
1连线词+谓语。连线词在从句中作主语。常见的连线词有： who，what，which等。如：
Could you tell me who knows the answer，please?你能告诉我谁知道答案吗?
The *** all children don't know what is in their stockings.这些小孩子不知道袜子里有什么东西?
2连线词+名词+谓语。连线词在从句中作主语的定语。常见的连线词有：whose，what，which，how many，how much等。如：
He asked whose handwriting was the best in our class.他问我们班上谁的书法最好。
The teacher asked us how many people there were in the room.老师问我们房间里有多少人。
3连线词+主语+谓语。连线词在从句中作宾语、状语或表语。常见的连线词有：whom，what，which，how many，how much， when，why，how，where，if /whether在句中不充当任何成分等。如：
He hasn't decided if he'll go on a trip to Wuxi.他还没决定是否去无锡旅行。
Could you tell me what I should do with the money ?你能告诉我我如何处理这笔钱吗?
4连线词+名词+主语+谓语。连线词在从句中作宾语或表语的定语。常见的连线词有：what，which，how many，how much，how等。如：
Do you know which class he is in ?你知道他在哪个班吗?
She asked me if I knew whose pen it was.她问我是否知道这是谁的钢笔。
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2.连线词
1当由陈述句充当宾语从句时，用that引导，that无词义，在口语或非正式文体中常省略。如：
He said that he could finish his work before supper.他说他会在晚饭前完成工作。
2当由一般疑问句充当宾语从句时，用if或whether引导，意为“是否”。如：
I don't know if /whether he still lives here after so many years.我不知道这么多年后他是否还住在这儿。
但在下列情况下只能用whether：
①在具有选择意义，又有or或or not时，尤其是直接与or not连用时，往往用whetherif…or not也可以使用。如：
Let me know whether /if he will e or not.=Let me know whether or not he will e让我知道他是否能来。
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.我不知道我们是去还是留。
②在介词之后用whether。如：
I'm interested in whether he likes English.我关心的是他是否喜欢英语。
We're thinking about whether we can finish the work on time.我们正在考虑是否能按时完成这项工作。
I worry about whether I hurt her feelings.我担心是否伤了她的感情。
③在不定式前用whether。如：
He hasnn't decided whether to visit the old man.他尚未决定是否拜访那位老人。
I don't know whether to go.我不知去否。
He hasn't decided whether to go by bus or by train.他还未决定是乘公共汽车去还是坐火车去。
④whether置于句首时，不能换用if。如：
Whether this is true or not，I can't say.这是否真的我说不上来。
⑤引导主语从句和表语从句时宜用whether。如：
Whether she will e or not is still a question.她是否能来还是个问题。
The question is whether we can catch the bus.问题是我们能否赶上公共汽车。
⑥若用if会引起歧义时，则用whether。如：
Please let me know if you like the book.可理解为：
a.Please let me know whether you like the book.请告诉我你是否喜欢这本书。
b.If you like the book，please let me know.你如果喜欢这本书，请告诉我。
3如果宾语从句原来是特殊疑问句，只需用原来的特殊疑问词引导。如：
Could you tell me why you were late for the meeting this morning?你能告诉我今天早上你为什么开会迟到吗?
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3.时态
含宾语从句的复合句，主、从句谓语动词的时态呼应应包括以下三点内容：
1如果主句的谓语动词是一般现在时，从句的谓语动词可根据需要，选用相应的任何时态。如：
I don't know when he will e back.我不知道他将何时回来。
He tells me that his sister came back yesterday.他告诉我他姐姐昨天回来了。
2如果主句的谓语动词是过去时，宾语从句的谓语动词只可根据需要，选用过去时态即一般过去时、过去进行时、过去将来时或过去完成时的某一种形式。如：
①The children didn't know who he was.孩子们不知道他是谁。
②He asked his father how it happened.他问他父亲这件事是如何发生的。
3如果宾语从句所表示的是客观事实、普遍真理、自然现象或习惯性动作等，不管主句用什么时态，从句时态都用一般现在时。如：
The teacher said that the earth goes round the sun.老师说地球绕着太阳转。
4.注意：
if和when既可以引导宾语从句，也可以引导状语从句，应注意它们在两种从句中的意思和用法的不同。if和when引导宾语从句时，分别意为“是否”和“何时”，其时态应和主句时态相呼应;它们引导状语从句时，意思分别为“如果，假如”和“当……时候”，当主句时态是一般将来时时，其时态用一般现在时。它们常常放在含有状语从句和宾语从句的题干中进行综合考查。如：
Do you know when he will e back tomorrow ?你知道他明天什么时候回来吗?
Sorry，I don't know.When he es back，I'll tell you.对不起，不知道。当他回来了，我将告诉你。
I don't know if he will e.我不知道他是否会来。
He will e if it doesn't rain.如果不下雨，他会来的。
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