我的语文老师喜欢在课堂上讲笑话。

My Chinese teacher loves to tell jokes in class.

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老师收了我的手机，因为我在课堂上打手机了。

The teacher____my mobile phone because I used it in class.

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我几乎不能明白我的数学老师在课堂上说。

I could hardly understand what my math teacher said in class.

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我无法理解老师在课堂上讲的内容。

I could not understand what the teacher said in class.

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老师拿走了我的手机是因为我在课堂上用了。

The teacher took away my mobile phone because I used it in class.

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在英语课堂上，跟上老师的课我有些吃力。

I have much difficulty (in) following our teacher in English class.

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在英语课堂上，跟上老师的课我有些吃力。

I have much difficulty (in) following our teacher in English class.

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