◎ 题干
按要求做题。

1. She has been swimming for 2 hours. (改为同义句)
She has been swimming       2 hour____.
2. My little sister is always behind me. (改为同义句)
My little sister       me                                 .
3. Tom played football for an hour. (改为现在完成进行时)
Tom                           football for an hour.

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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“按要求做题。1. She has been swimming for 2 hours. (改为同义句)She has been swimming 2 hour____.2. My little sister is always behind me. (改为同义句)My littl…”主要考查了你对  【副词】【实义动词】【现在完成进行时】【介词短语】【介词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。