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有些短暂时间，如dawn，daybreak，sunrise，dusk，nightfall，sunset，twilight，常和at一起用：
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At noon there was still no news．到了中午还没有消息。
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At daybreak we started on our journey．黎明时我们出发了。
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At dawn we rose and knocked at the gate of the city．天亮时我们起来敲城门。
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Someone knocked on our door at midnight．午夜时有人敲我们的门。
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At the present moment he is supposed to be in Paris．此刻他应当在巴黎。
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The doctor was awakened at dead of night．在深更半夜时医生被叫醒了。
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We started at sunrise．我们在日出时出发了。
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At dusk the lights of the city come on．黄昏时分城里的灯都亮了。
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Draw the curtains at sunset．太阳落山时把窗帘拉上。
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She often sits in the garden at twilight．在黄昏时分她常在花园里坐坐。
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一些时间副词（状语）：
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下列副词或状语可和完成时态或一般过去时连用：
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in the past just lately previously recently
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I’ve just seen Professor Green. / I just had a cup of tea.
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Lately I’ve taken to making my own clothes. / A sad accident happened there lately.
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Have you seen Ann recently? / I ran into your cousin in Berlin recently.
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A few days previously Shelley had written to him. / Previously she had very little time to work.
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In the past I have had many jobs. / In the past trains were pulled by steam engines.
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下列副词（状语）通常和过去时一道用：
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at one time earlier earlier on formerly once originally sometime then Once dinosaurs walked these plains．恐龙一度在这些平原上活动。
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We were still at school then．那时我们还在上学。
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The dress was originally $40．这件衣裳原来卖40美元。
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She was formerly head of a large department store．她过去是一家大百货公司的头头。
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下列副词（状语）常可和将来时态连用：
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