内容正文:
初中英语语法
宾语从句
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I finally decided that choosing an ice cream flavor is the hardest decision of my day.
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在复合句中,如果由一个句子充当的宾语,通常放在主句谓语动词(及物动词)或介词之后,那么这个句子就叫宾语从句。
定义
宾语从句
引导词
宾语从句的引导词分为从属连词,连接代词,连接副词。
1
引导词:从属连词
从属连词:that, whether, if
that 引导的从句,表示陈述一件事实,主句谓语动词表示确定,非疑问;that在句中无任何意义,不充当句子成分,常省略。
I hear (that)he will be back in an hour.
He said (that) he missed us very much.
The teacher told us (that) the earth moves around the sun.
whether, if 引导的宾语从句
if/ whether “是否”,说明对陈述的事物不明确或不清楚。常用在ask, wonder, can(could) you tell me 表示疑问不确定意义的词之后;从句句意完整,不缺成分。
Ask him whether (/if) he can come.
I wonder whether it is going to rain or not.
Could you tell me whether (/if) Mr Li lives here?
I want to know if/ (whether) he will go to the park with us.
只能用 whether不能用 if 的情况
在引导主语从句、表语从句时。
Whether it is true remains a question.
The question is whether it is true.
用在动词不定式之前时用whether不用if。
I don’t know whether to go there at once.
当与 or not 直接连用时( or not紧跟在引导词后面时),
或包含or引导的并列选项时,只能用 whether。
I want to know whether or not you agree.
The key question is whether he is telling the truth or lying.
只能用if 不能用 whether的情况
引导条件状语从句,表“如果”时。
If he runs fast, he’ll get there on time.
I’ll go to see you if I have time.
在日常口语中,当主句(如 I wonder..., Do you know... )被上下文隐含或省略,只保留核心的“是否”疑问从句时,通常只能用 if。
If he’s coming?(= I wonder if he’s coming.)
连接代词:who, whom, whose, which, what
连接代词一般指疑问,引导宾语从句,并在从句中担任句子成分,具有一定的意义,不可省略。
He asked who could answer the question.
Do you know whom they are waiting for?
He asked whose bike was the best in the class.
I don’t know whom you should depend on.
2
引导词:连接代词
连接副词:where,how,why,when
连接副词,引导宾语从句,并在从句中担任句子成分,具有一定的意义,不可省略。
He didn’t tell me when we would meet again.
Please tell me where he is.
Can you tell me how I can get to the station?
Could you tell me why the train is late?
3
引导词:连接副词
宾语从句的语序用陈述语序:
连接词+主语+谓语+其他成分
His brother asks when he will go to the library.
他哥哥问他什么时候去图书馆。
I don’t know what he wanted to buy.
我不知道他想买什么。
1
语序
否定前移
若主句谓语动词为think, guess, imagine, suppose, believe等其后的宾语从句若含有否定意义,一般要把否定词转移到主句谓语上,从句谓语用肯定式。
I think it is not good for your eyes. (×)
I don’t think it is good for your eyes.(√)
2
主句用现在时或将来时,从句可用任何时态,根据实际情况而定。
I don’t know how my father goes to work.
我不知道我父亲怎样去上班。
I know he lived here ten years ago.
我知道他十年前住在这儿。
1
时态
主句如果用一般过去时,从句的时态一般要用相应的过去时态。
Linda said that she was going to work in Beijing in the future.
琳达说,她将来要去北京工作。
I saw she was talking with her mother.
我看见她在和她妈妈说话。
He said that he had seen the movie.
他说他已经看过这部电影。
2
当从句说明的是客观真理或规律时,无论主句什么时态,从句均用一般现在时。
He told me the earth moves around the sun.
他告诉我地球绕着太阳转。
Mr. Li told me the sun rises in the east.
李先生告诉我太阳从东方升起。
He told me that there are twelve months in a year.
他告诉我,一年有十二个月。
3
Could you tell me how long __________ ?
A. you have buy the watch
B. you have kept this science book
C. have you been away from China
模拟考场
又
The teacher asks us ____ Jim can come back on time tomorrow .
A. that
B. if
C. when
模拟考场
又
模拟考场
No one knows what ______ in fifty years.
A. will our city be like
B. our city will be like
C. is our city like
D. our city is like
We all believe ______ China will successfully hold the 2025 Asian Games.
A. what
B. that
C. if
D. how
模拟考场
完成句子。
I wonder _________(whether/if)he will come to the party or not.
She said that she ____________ (visit) her aunt in Shanghai the next month.
whether
would visit
模拟考场
又
I called Mike an hour ago, but nobody answered. I wondered ______.
A. where he is
B. where he was
C. where he has been
D. where he will be
模拟考场
句型转换。
I think he can finish the task in two hours.
(改为否定句)
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I don’t think he can finish the task in two hours.
模拟考场
又
In the science class yesterday, our teacher told us that light ______ faster than sound.
A. traveled
B. travels
C. had traveled
D. would travel
模拟考场
将下列句子合并为一句。
He is doing his homework. He said.
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How can I get to the station? Could you tell me?
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He said that he was doing his homework.
Could you tell me how I can get to the station?
模拟考场
又
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