初中英语－－宾语从句专项复习
复习内容：宾语从句考点归纳
复习目标：
1、掌握引导宾语从句的各种连词
2、掌握宾语从句的语序——主句+连接词+主语+谓语
3、掌握宾语从句，主句与从句在时态上的呼应。
重点：语序和时态呼应
难点：语序和时态呼应；与疑问词+不定式的转化；与状语从句的辨析
考点梳理：
一、宾语从句的连接词：
1、连词that，只起连接作用，在从句中不作句子成分，也无词汇意义，在口语中常被省略。
eg. He knew (that) he should work hard.
2、连词if 、whether，它们起连接作用，在从句中不作句子成分，作“是否”解，在口语中多用if。
eg. Tom don’t know if/whether his grandpa liked the present.
He asked me whether or not I was coming.
一般情况下，if 和whether可以互换，但以下3种情况只能用whether：
①在不定式前：Whether to go there or not hasn’t been decided.
②在介词前：It depends on(依靠) whether it is going to rain.
③与or not连用：They are talking about whether to go there or not.
3、连接代词who, whom, whose, what, which，连接副词when, where, why, how， 它们起连接作用，作句子成分，各有自己的意义
。
eg. The teacher asked the new students which class he was in.
I wonder where he got so much money.
【注意】1、由连接代、副词引导的宾语从句可以和“疑问词+不定式”结构转化。
eg. I don’t know how I should do with the presents. è I don’t know how to do with the presents.
2、要注意区分判断由if、when引导的从句类型.
二、宾语从句的语序：
宾语从句的语序是陈述语序，即“连接词+主语+谓语+其它成分”。特别强调：它的主语和谓语的语序是陈述语序，而不是疑问句的倒装结
构。
Can you tell me who(m) do we have to see?(╳)
Can you tell me who(m) we have to see?( √)
The teacher asked the students what they were doing.(思考: what在从句中的成分)
陈述句变为宾语从句时,要注意人称和时态的变化,语序不变。 eg. She said, “I will leave a message on the desk.” à She said
she would leave a message on the desk.
一般疑问句和特殊疑问句变为宾语从句时,也要注意人称和时态的变化,后面接陈述语序。Eg. “Where are the tickets?” I asked him.
à I asked him where the tickets are.
三、宾语从句的时态呼应：
宾语从句中谓语动词的时态，常常受到主句谓语时态的制约，此为时态呼应。如果主句谓语是一般现在时或将来时，从句谓语的时态不受
限制；如果主句谓语的时态是一般过去时，从句一般要随着改为相应的过去时态（一般过去时、过去进行时、过去将来时、过去完成时）。
eg. I thought (that) you are free today. (╳)
I thought (that) you would be free today. ( √)
【注意】当宾语从句叙述的是客观真理时，不管主句谓语的时态如何，从句都用一般现在时。
eg. The teacher told us (that) the earth moves around the sun.
四、其他需要说明的问题：
1、标点由主句决定，如主句是陈述句、祈使句，则用句号；是疑问句则用问号。
eg. I heard she had been to the Great Wall. Can you tell me which bus I should take?
2、要注意个别句子中主从句人称的一致。
▲五、 宾语从句和状语从句的区分：
eg. 1) I will go out tomorrow if it is fine tomorrow.
2) I don’t know if the train has arrived.
句1中if引导的是状语从句。这个从句表示“条件”，修饰主句。整个句子的意思是如果明天天气好，我就出去。句2中if引导的是宾语从
句，充当谓语动词don’t know的宾语。整个句子的意思是我不知道火车是否已到达。
判断方法：
1、可以从整个句式看。状语从句一般可以放在主句的前面或后面（个别除外），宾语从句只能放在主句谓语动词之后。
2、从引导词看。if充当宾语从句的连接词时，相当于whether， 词义为“是否”，充当状语从句的连接词时，词义为“如果”。when充当
宾语从句的连接词时，意为“什么时候”， 充当状语从句的连接词时，意为“当……的时候”
3．从时态看。if和when作连接词时，引导宾语从句要注意：从句的谓语动词的时态应根据主句的时态作相应的变化。if和when充当从属连
词时，引导条件和时间状语从句，若主句的谓语动词用一般将来时，则从句的时态应用一般现在时表示将来。
e.g. I think (that) differences are not important in a friendship.
An old lady said (that) she found a job as a foreign language teacher.
They don’t know if (是否)we are going hiking next weekend
Could you tell me when （什么时候）the train arrives ?
We’ll go to the Great Wall if (如果) it doesn’t rain tomorrow.
=If doesn’t rain tomorrow, we’ll go to the Great Wall.
They knew each other when（当……时候）they were children.
=When they were children
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