1.宾语从句在句中作及物动词或介词的宾语,从句放在主句之后,前后不用逗号分开.
2.引导宾语从句的词有:
连词that(在口语中that常可省略),if,whether,如:
He knows that Jim will work hard.
连接代词who,whom,which等,如:
Do you know who (whom) they are waiting for?
连接副词when,where,how,why等,如:Could you tell me how we can get to the station?
3.whether和if都有“是否”的意思,一般情况下两者可以换用,但在介词之后,
不定式之前,与or not连用,在句首或在引导表语从句,同位语从句时,只能用whether,如:I want to know if/whether the news is true.He doesn't know whether to stay or not?
4.宾语从句要用陈述句语序.
5.宾语从句一定要注意时态呼应,即:当主句谓语动词是过去式时,从句中谓语动
词也要用过去范畴的时态,但若从句陈述的是真理或客观规律,其谓语的时态仍用一般现在时,如:
He asked who could answer the question.
My father told me that the earth goes around the sun.
6.一个宾语从句只能用一个连词.
7.当主句谓语动词是think,believe等动词时,宾语从句的否定意义要放到主句中.另外,当主句主语为第一人称时,后面若接附加疑问句,那么附加疑问句的主语、谓语应与从句中的主谓语保持一致.如:
I don't think he looks like his father,does he?
8.直接引语和间接引语也是宾语从句,直接引语是引述别人的原话,放在引号内,
不用连词联接;间接引语是用自己的话转述别人的话,通常用连接词与主句联接.
(1)陈述句变为以that引导的宾语从句,如:
He said,“I'm happy.”[FY()[FY]]He said that he was happy.
(2)一般疑问句变为if(whether)引导的宾语从句,如:
He asked me,“Does his father know Mr Green?”
---He asked me if his father knew Mr Green.
(3)特殊疑问句变为由who,what,where,how等疑问词(连接代词或连接副词)引导的宾语从句,如:
He asked me,“Where is Mr Wang?”
---He asked me where Mr Wang was.
注意上述例句中连词、时态、语序等变化.
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