today I met a man. today I met a man walking his handsome dog,and this guy talked to me:he is looking for food. can I say:hasn't he eat dinner or has he not eat dinner? or both of sentences are not good? did I make any mistake about above sentences( or about the above)? thanks for your comments in advance. 今天我遇見一個男人溜著他帥氣的狗，他跟(對)我說:他(牠)正在找吃的。 我可以說:他(牠)還沒吃過晚餐嗎? 或者兩個句子(hasn't he eat dinner or has he not eat dinner)都用得不好? 上述的句子有任何錯誤嗎? 先謝謝你們的回覆 。