do they always have lunch at noon?

问题描述:

do they always have lunch at noon?
为什么不用have?have they always have lunch at noon?

have 在这里为动词
陈述句
They always have lunch at noon
而且always在此表示“总是”一般跟现在时
所有疑问句为
do they always have lunch at noon?
如果表示:他们吃过饭了吗?则应该是
Have they had lunch?