Was he absent from school last week?为什么用Was提问而不是Did?

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• Was he absent from school last week?为什么用Was提问而不是Did?
• 请问was he absent from school last week?的另外说法或语法用法?was是be的过去式,我们可以说is he absent from school last week?或者did he absent from school last week?不是说第三人称单数要用be动词does吗?句子中was是does的过去式还是is的过去式啊?这点搞不清楚,其中absent这个读音b要读吗？还是略读快速读过去呢？
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