The bread and the butter ( )on saleis还是are呢
问题描述：
The bread and the butter ( )on sale
is还是are呢
答
are
答
are
只要有and连接，不管是否是单复数，都是用are
for example:
Playing football and playing soccer are my favorite sports.
答
are The bread and the butter 指两个事物
意思为面包和黄油正在销售中。。。
如果原题为The bread and butter() on sale.没有后面那个顶冠词the的话
就应该选is ,The bread and butter指的就是一个事物，即黄油面包
答
are
因为The bread and the butter 不是一样东西，所以要用are
答
are
两个前面都有the说明是两个东西
如果是the bread and butter就是约定俗成的一个组合,用is