MEANING/意义
上课
EXAMPLES/列句
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几点上课?At what time (do you) go to class?
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现在上课。Now the class begins.
COMBINATIONS/组合
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上课了the class begins now; let's have class now
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去上课go to class
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没上课did not have a class; the class hasn't started
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上课说话to talk in class
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上课睡觉to sleep in class
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上课以前before the class