I wanted him to go with me,but he refused.我想知道这句话错在哪里了?急.我觉得这个句子没有问题啊，可是在卷子上这道题偏偏是个改错题。

I wanted him to go with me; he declined.

I wanted him to go with me,but he refused me ( refulse 是及物动词,后接宾语)

I asked him to go with me,but he refused.
refuse 和 want 对应不太合适 这个句子没有大问题
并且 refuse 可以作不及物动词使用
比如 It never occurred to me that you would refuse.
我从未想到你会拒绝.

I wanted him to go with me,but he refused.
wanted =would like
过去想,呃,这个词,一般不用.