文档介绍：When to use it?
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Look! Ann is running.
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Listen! Mary is singing.
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Jane is playing football at the moment.
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Li Ming is doing his homework now.
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Present Conutinous Tense(现在进行时）
现在进行时表示现在（说话瞬间）正在发生的动作。
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Look! Ann is running.
Listen! Mary is singing.
Jane is playing soccer at the moment.
Li Ming is doing his homework now.
Find out the key words or phrases
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如果句子中出现“look”,“ listen”, “now”,“ at the moment”关键词时则要用现在进行时。
Present Continuous Tense(现在进行时）
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（1）Mr. Wang is going to Beijing this afternoon.

(2) Workers are building a teaching building these days.
Present Continuous Tense(现在进行时）
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现在进行时还可以用于以下两种情况：
（1）表示当前一段时间或现阶段正在进行的动作；
（2）表示将来，具有“打算”、“安排”含义
（go, come, start, arrive等可以这样用）
Present Continuous Tense(现在进行时）
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