问题描述：
这里为什么要加s
My wife and I walking along the banks of the river.
bank为什么要加s呢?是因为My wife and I是两个人么
My wife and I walking along the banks of the river.
bank为什么要加s呢?是因为My wife and I是两个人么
问题解答：
我来补答展开全文阅读