Butter and bread___ their daily food,but the bread and the butter ___ up now.
问题描述：
Butter and bread___ their daily food,but the bread and the butter ___ up now.
A.is；is eaten B.are; have been eaten C.are; are eaten D.is; have been eaten
不需要解释现在完成时的被动语态,只想知道第一个空为什么用is,而第二个空用have.
答
第一个butter & bread是泛指,用is,第二个在bread和butter前加了the,是特指,所以要用have.主谓一致有泛指和特指吗？不是定冠词才是泛指特指吗？第一个b&b是泛指所有的涂了黄油的面包, 是一种食物,所以只能用is,再举个例子,fish and chips后面跟的也是is, 所以不是因为就近原则选择is!!! 后面的b&b的前面都加了the,所以是特指两种食物,分别指黄油和面包,所以要用are,又因为时态,所以变形!!! 如果看晕了,就记得bread and butter 后面用is、the bread and the butter 后面用are～