Question

大学英语作业： ( ), mother will wait for him to have dinner together.我选的D，但是批改时候是错误！

A.However late is he
B.However he is late
C.However is he late
D.However late he is
那个大师给解解~谢谢啊！！！

Answer 1

这个是however引导的让步状语从句，however有以下用法：
however可以做连词，含义为“不管……如何，多么”，引导让步状语从句。从句的语序为：however+adj./adv.+主语+句子的其他成分。
例如：We shall never succeed，however much we try.
无论我们多么的努力，都不可能成功。
However cold it is，she always goes swimming.
无论天多冷，她总是去游泳。
所以应该选D，其它的语序都不对。

Answer 2

此处 however = no matter how ,however这里是表示“无论怎样”,However +形容词/副词+宾语+谓语动词 故 D 是对的。