he was very excited because he had long __(dream)of becoming a college student 为什么是dreamed

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he was very excited because he had long __(dream)of becoming a college student 为什么是dreamed
he was very excited because he had long __(dream)of becoming a college student 为什么是dreamed

he was very excited because he had long __(dream)of becoming a college student 为什么是dreamed
had+过去分词 表示过去的过去.
当同一句中,有两个动作都发生在过去,并且时间有先后的话,先发生的用过去完成时,后发生的用一般过去时.

had long __(dream)of
过去完成时态啊~
当然要用dreamed~
希望可以帮到你~

had+过去分词 表示过去的过去。dream在这里是动词