内容正文:
宾语从句
在复合句中,宾语为句子的从句叫宾语从句,宾语从句用陈述语气。
从属连词
不充当成分
That(在句首不能省略)
Whether,if(if不能放在句首)
连接代词
在句子中作主语,宾语,表语,定语
Who,whoever,whom,what,whatever,whose,which
连接副词
在句子中作状语
When,where,why,how……
找出宾语从句
1. 找谓语,谓语后的句子就是宾语从句
2. It 作形式宾语,从句是句子真正的宾语即宾语
1. That引导的宾语从句,that在句子中不作成分,无意义,从句大多为陈述句。(在口语和非正式文体之前可省略)
用于这种结构的动词:say ,think ,insist ,wish ,hope , demand ,imagine, wonder, know, suppose, see, believe, agree...形容词:sure, glad, pleased, sure, certain, happy, sorry....
We believe(that)he is honest. 我们相信他是诚实的。
We know(that) we should study hard.我们知道我们应该努力学习。
That不能省略的情况
1 主句的谓语动词与宾语从句之间有插入语时或其他成分
I hope, on the contrary, that he will stay at home with us.
2 宾语从问是双宾语中的直接宾语时
He told me that he would come.
3 有多个并列宾语从问时,第一个可省that,后面的不能省He said (that)the book was very interesting and that all the children like to read it.
4 宾语从问的主语是this、that或被this、that修饰时
The teacher said that that word was wrong.
5 it作形式宾语,从句为真正宾语时
I think it necessary that he should stay here
6 except , but等介词后的宾语从句,that不能省
2. whether/if引导的并与从句,从句为一般疑问句,在句子中不作成分,不可省略,意为是否。(if和whether引导动词后的并与从句课正常使用,if是口语,whether是书面及正式场合)
用于这种结构的动词:know, ask, care, wonder...
I asked him if/whether he was busy.我问他忙不忙
只能用whether的情况
1 在动词不定式前
I can't decide whether to stay.我不能决定是否留下。
2 介词后的宾语从句
I'm thinking of whether we should go shopping. 我在想我们是否该去购物。
3 宾语从句提前时,即置于分首表强调时
Whether he lives there , l want to know.我想知道他是否住在那里
4 与or not直接连用时(whether和or not分开时,可与if连用)discuss, leave, put, doubt后面的宾语从句常用whether
I can't say whether or not he will come on time.
I don't know whether/if he will come or not.
3. 连接代词what/who/whose/which/whom引导宾语从句,引导的从句用陈述句语序,在句子中作主语,宾语,表语,定语等成分,不能省略。
I don't know who she is.我不知道她是谁
Did you hear what he said? 你听到他说什么了吗?
4. 连接副词when, where, how , why及“how+形容词/副词引导的宾语从句,引导的从句为陈述句语序,在从句中作状语等,不能省略
I don't know when she will come.我不知道她什么时候回来。
Can you tell me how l get to the subway station.你能告诉怎样去地铁站吗?
Do you know how much it costs ? 你知道它多少钱吗?
5. 宾语从句的时态
1 主句为现在时或将来时态,从句可根据需要为任意时态
I know that he will come tomorrow.我知道他明天将会来
(主问为一般现在时,从句可为一般将来时)
I know(that)he loves English.我知道他喜欢英语。
(主向为一般现在时,从句可为一般现在时)
I will tell her that l have left.我会告诉她我已经离开了 (主句为一般将来时,从句可为现在完成时,)
Will you tell me who has been dating Lucy ? 请告诉我谁在跟露西约会,好吗?
(主句为一般将来时,从句为现在完成进行时)
2 主句为过去时态,从句为相应的过去时态
He didn't tell us he came from Beijing.
(表示动作同时发生)
He decided that he would go to Beijing next week
(表示动作发生在主句之后)
3 从句为客观事实或真理,仍用一般现在时,不受主句时态影响The teacher told us that the earth goes around the sun.
He said that spring comes before summer.
4 主句为could you tell me,从句时态不限制
Could you tell me where he is from ? 你能告诉我他来自哪吗
6. 宾语从句的否定前移
当主句主语是第一人称,主句谓语是think, believe, suppose, expect , imagine等,后接一个表示否定意义的实语从时,其否定通常要转移到主刀。在反意疑问句中,这种否定前移的复合向在进行反意疑问时,助动词和相应代词要与从句一致,且要用肯定形式。
I don't believe that it is true.我相信那不是真的
I don't imagine that he will come.我想他不会来的。
I don't think that they'll wait to the last minute.
I don't think he is true , is he?我认为他是不对的,是吗?
I don't believe it will rain tomorrow, will it?
我相信明天不会下雨,是吧?
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