求下列动词的过去式和过去分词 原形 过去分词discuss,make,collect,have,teach,find,interview,cycle,pollute,leave,eat,spend,plan,cost,put,finish,arrive过去式discussed,made,collected,had,taught,found,interviewed,cycled,polluted,left,ate,spent,planed,cost,put,finished,arrived过去分词discussed,made,collected,had,taught,found,interviewed,cycled,polluted,left,eaten,spent,planed,cost,put,finished,arrived加油哦。我猜你是六年级吧。
discuss 过去式 过去分词 现在进行时
discuss的过去分词 这是标准情况,就加ed,discussed