Tom has three pieces of bread for breakfast.(划线提问)

那要看对什么提问。若对Tom提问,则是Who has three pieces of bread for breakfast?若对three提问,则是How many pieces of bread does Tom have for breakfast?若对three pieces of bread提问,则是What does Tom have for breakfast?常用的大概就这些了,本人觉得第三个的可能性比较大。