Where are the black pants? 为什么用"are "?
Whose is this pair of pants? 为什么用" is "?
参考答案:where are:pants是主语,问pants在哪
whose is:whose是主语,问pants是谁的
Whose is this pair of pants? 为什么用" is "?
参考答案:where are:pants是主语,问pants在哪
whose is:whose是主语,问pants是谁的