what do you usually have for lunch?和 what do you usually have lunch 的区别是什么?

题目

what do you usually have for lunch?和 what do you usually have lunch 的区别是什么?
如题 意思有什么不一样的 加FOR 和不加 为什么有这种区别?
语法错了 麻烦大家说说语法哪里错了，为什么错了，我加重分

答案

我怎么觉得第二句语法不通呀,如果问通常中午吃什么应该是what do you usually have for lunch, 如果去掉那个for就可以问在那吃,where do you usually have lunch 说你语法错就是因为问午饭吃什么就应该是for lunch,...