The teacher's desks are big.还是用The teachers' desks are big.teacher's 的所有格应该用复数teachers'还是用单数呢?

The teacher's desks are big.还是用The teachers' desks are big.teacher's 的所有格应该用复数teachers'还是用单数呢?

teacher's是一个老师的所有格.teachers'是两个以上的所有个,因为以s结尾的名词只加'就可以.所以是teachers

以S结尾的复数名词的所有格，在后面加“’”！

这里teacher 用了复数，那所有格直接加'就可以了，语法书上关于所有格有这条

The teachers' desks are big.
teaacher有单复数的啊