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最佳答案:因为它和of搭配了,像means of transportation,他只是搭配问题
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最佳答案:原形 过去式 过去分词have had hadkeep kept keptmean meant meantring rang rungsmell smelt s
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最佳答案:一般现在事就是这样,单三:means,tells,rings,runs,uses,falls,hears进行时:meaning,telling,flying,r
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最佳答案:我觉得可以这样说:what do you mean?---因为mean的内容仍是现在时或what did you mean by that?加上这句话就指刚刚过