请问应该用at breakfast还是用on breakfast?

请问应该用at breakfast还是用on breakfast? 在早餐时间是用on breakfast time还是at breakfast time,还是in breakfast time? She usually breakfast at 7:00请问是用having还是has,还是have?要第三人称单数吗? breakfast 的介词搭配breakfast/lunch/dinner 的介词搭配.是用for 还是 at 还是有其他的? for breakfast 和at breakfast的区别I have some bread for breakfast.那什么时候用at breakfast? 请问这里,在什么什么大学,应该用in还是at?!I am a college student majoring in mass media at/in *** college请问应该用AT/IN? We had bacon and eggs for breakfast.我们早饭吃熏肉和蛋.这里为什么不用We had bacon and eggs at breakfast.早餐应该用at breakfast啊? I have coffee _ breakfast time应该填at:in还是on in the breakfast time还是at the breakfast time at the breakfast还是on the breakfast 为什么? I am a college student majoring in mass media at/in *** college请问应该用AT/IN?请问,应该用at 还是 in?请问,为什么要用majoring?加ing形式呢? in 还是 at breakfast,lunch,dinner? Jane has her breakfast at 7:00 every day.用her breakfast提问 用Selina,eat,about,nine ,at,breakfast ,always ,造句 怎么用at breakfast/lunch/supper造一句英语句子 一般疑问句中 Did的后面的动词的形式用什么?例如 你在家里吃午饭了吗吗?Did you have breakfast at home?还是Did you had breakfast at home? Sunday前应该用in,on,at还是of? 师说eat breakfast是不对要用have breakfast可有栏目中用eat 到底是have breakfast还是eat breakfast