如果是征求意见:What shall you want to have for breakfast?
如果是在餐馆：Do you like something for your breakfast?OR:What do you like for your breakfast?
如果是过去式：What did you have for your breakfast yesterday(the day before yesterday;and so on)?
如果是问自己：What shall I eat?(无须强调时间,因为如果是文章的话,作者和读者都应该清楚滴,说了反而罗嗦＾0＾）
如果是放在从句中：就把这些句子的助动词（shall,did等)但要注意时态的转换哦!
*******如果需要快速翻译建议你可以用剑桥翻译等一些翻译中心,但要注意要一句一句的让它翻译才不容易乱码哦