中考英语冲刺→现在进行时及习题带答案
现在进行时的基本结构肯定式：am/is/are+doing（现在分词）They’rehavingameetingnow.他们现在正在开会。否定式：am/is/arenot+doing（现在分词）Theyaren'thavingameetingnow.他们现在没有...
现在进行时的基本结构肯定式：am/is/are+doing（现在分词）They’rehavingameetingnow.他们现在正在开会。否定式：am/is/arenot+doing（现在分词）Theyaren'thavingameetingnow.他们现在没有...
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