Mum‘s cooked the dinner.改为一般疑问句,Has mum cooked the dinner?这是为什么呢?"‘s"是啥
问题描述：
Mum‘s cooked the dinner.改为一般疑问句,Has mum cooked the dinner?这是为什么呢?"‘s"是啥
答
Mum's cooked the dinner.这是个现在完成时的句子,其结构：have/ has + 过去分词,所以：Mum's 是 Mum has 的缩写
该为一般疑问句将 has 提前到句首,所以：Has mum cooked the dinner?