中学英语宾语从句语法讲解
[宾语从句歌诀]
宾语从句三姊妹,that,if/whether,wh-/how展风采。
展风采有三关,引导词、语序、时态在把关。
主从时态要一致,陈述语序永不变。
陈述请你选that,疑问需用if/whether连。
特殊问句作宾从,原来问词不用换。
三关过后莫得意,人称、标点需注意。
留意变脸的if/when,从句的简化记心间。
[歌诀解码]
一、三姊妹
宾语从句根据引导词的不同可分为三种类型:
1. 由that引导的宾语从句。如:
We knew (that)we should learn from each other.
2. 由if/whether引导的宾语从句。如:
Please tell me if/whether you have been to America.
3. 由who,where,how等连接代词或连接副词引导的宾语从句。如:
Can you tell me how I can get to the nearest post office?
二、三关
1. 引导词关
如果从句是陈述句,引导词用that(that在口语或非正式文体中常省略);如果从句是一般疑问句,引导词用if/whether;如果从句是特殊疑问句,引导词用由疑问词转换而来的疑问代词/副词。
2. 语序关
①陈述句变为宾语从句,语序不变,即仍用陈述语序。如:
He is an honest boy. The teacher said. →The teacher said(that)he was an honest boy.
②一般疑问句和特殊疑问句变为宾语从句,语序变为陈述语序。如:
Does he work hard?I wonder.→I wonder if/whether he works hard.
When did he leave?I don’t know. →I don’t know when he left.
3. 时态关
①如果主句是现在的时态,从句的时态可根据实际情况而定。如:
I have heard(that)he will come back next week.
②如果主句是过去的某种时态,那么从句的时态一定要用过去的某种时态。如:
He said(that)there were no classes yesterday.
注意:如果宾语从句表述的是客观真理、自然现象等时,不管主句是什么时态,从句都要用一般现在时。如: