what? 这个是疑问句how much does this red wine cost?这句话也是 how much引导的疑问句,意思是:这品瓶红酒多少钱?how much 是用来询问价格的。this red wine在此处是第三人称单数,而这句话里已经有了动词cost,疑问句就必须用疑问助词,因此用了助词does,而且实意动词cost 是要放到最后的希望可以帮到你Best wishes!