将下列句子改为否定句. I know that．题目和参考答案——青夏教育精英家教网——

题目内容

将下列句子改为否定句。

I know that．

答案：
解析：

I don't know that．

句中没有可直接加not的be和情态动词，只能借热心的助动词do来加not，可缩写成don't。(注意：若主语是第三人称单数，do要变为does再加not，原来第三人称动词要还原。)

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请将下列句子改为否定句，每空一词（含缩写）。

1. Li Ming receives an e-mail.
    Li Ming                        an e-mail.
2. My English will become very good.
   My English                          very good.
3. He can come to our school.
    He                          to our school.
4. They had a good time in Qingdao.
    They                         a good time in Qingdao.
5. I wanted to go to the big store to buy something.
    I                         to go to the big store to buy anything.
6. Sit here, please.
                              here, please.
7. My mother is washing the clothes.
    My mother                           the clothes.
8. There are some desks in the classroom.
     There                          desks in the classroom.