what food did you bought哪里错了

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what food did you bought哪里错了

what food did you bought哪里错了
what food did you bought哪里错了

what food did you bought哪里错了
bought 这个错了.
bought 是过去式.但是在疑问句里,前面的助动词 did 已经表示过去时,所以后面的动词用原形.

bought 此句子中有did反映出是过去时,bought应还原成原型buy