宾语从句的结构 以及用法
来源:百度知道 编辑:UC知道 时间:2024/05/10 17:00:39
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, doe