摘要:注意判断陈述部分的主语是单数还是复数.反意疑问句从人称和数上应与陈述部分主语相一致.例如: None of the food was wasted, was it? 没有食物浪费.是吗? None of the workers arrived on time, did they? 没有工人按时到.是吗?

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