what is A and B means?不对
what are A and B mean?不对
what is A and B mean?不对
如果是主系表结构 如果a and b 是一个整体
应该是what is the meaning of A and B
或者 what is A and B ‘s meaning?
如果 a and b 是两个不同的 东西
应该是what are the meanings of A and B
或者 what are A's and B's meanings?
如果是 主谓宾结构 a and b 是一个整体
应该是what does A and B mean?
如果 不是 一个整体
应该是 what do A and B mean?