宾语从句的时态受主句的限制,

 既:主句是一般现在时态,从句根据实际情况而定。

 主句是一般过去时态,从句用相应的过去的时态。

 例:1)She says that she is a student.

    She said that she was a student.

    4)She says that she can sing a song in English.

    She said that she could sing a song in English.

 如果宾语从句说的是客观真理、自然现象或事实时,这时宾语从句要用一般现在时态。

 例:The teacher said that the earth goes round the sun.

    He told me that Japan is an island country.

  Could you tell me…是用来征询对方的意见,语气委婉,并不表示过去。

 例:Could you tell me when we will visit the Histury Museum?

 例:She said: “I have been to England before.” →She said that she had been to England before.

    She asked me: “Do you like maths?”     → She asked me if I liked maths.

★注意:当从句的原句为以下句子以及what, who作主语时,语序不变:

What’s wrong?  What’s the matter? What’s happening? What happeneed?

  eg: I don’t know what’s the matter.

    Can you tell me who is over there?

宾语从句与简单句的交换。

 ★由连接代词和连接副词引导的宾语从句,如果宾语从句的主语和主句的主语是同一个人时,可以用“疑问词+不定式”做宾语的简单句结构。

 例:I don’t know what I should do next. → I don’t know what to do next.

    He didn’t know where he would live. → He didn’t know where to live.

宾语从句的否定:

★如主句主语是第一人称I, we,且谓语动词是think,believe, suppose, expect,guess等表心理活动的动词时,变否定要否定转移,即否定主句。否则否定看从句。

I think chicken can swim. → I don’t think chicken can swim.(我认为鸡不会游泳)

He says that Lily goes shopping. → He says that Lily doesn’t go shopping.(他说lily没去购物)。

变反意疑问句:如主句主语是第一人称I, we,且谓语动词是think,guess,believe等表心理活动的动词时,变反意疑问句时看从句,否则看主句。

I think he is a good student, is’t he?

They want to know if he is a good student, don’t they?

值得注意的是,当这些词后接的宾语从句的否定转移到主句时,其仍属否定词,故其后的短语句式应为肯定。

e.g.I don't believe that he can translate this book, can he?

We don’t believe that man is killed by Jim,is he? 我认为那个人不是Jim所杀的,是不是?

做练习:

  you see________?

 A. what he’s reading B. what is he reading C. what does he read D. he reads what

2.Does Jack come from Japan? Do you know?(合并成一个句子)

 Do you know_____Jack _____from Japan?

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