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?
答
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?