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软件简介：
Unit 1 .Duty report 1.Who's on duty today 2.Is everyone here today 3.What day is it today 4.What's the date today Words and expressions .Grammer The Present ProgressiveTense 现在进行时 1.用法: 现在进行时表示现在(说话瞬间)正在进行或发生的动作. 2.谓语结构: be(am,is,are)+doing |
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