what time does his mother do the housework?从哪里看出是一般现在时?
问题描述：
what time does his mother do the housework?从哪里看出是一般现在时?
答
因为does就是一般现在时形式,hismother是第三人称单数,所以用does,而因为有了does这个助动词,所有后面加动词原形,这里就是do.