where did you graduate?graduate为什么不用过去式graduated

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wheredidyougraduate?graduate为什么不用过去式graduatedwheredidyougraduate?graduate为什么不用过去式graduatedwheredidyo

where did you graduate?graduate为什么不用过去式graduated
where did you graduate?graduate为什么不用过去式graduated

where did you graduate?graduate为什么不用过去式graduated
graduate是动词原形,graduated是动词的过去式,因为did是助动词,后面只能接动词原形.不管是疑问句还是肯定句都是如此,希望回答你能满意.