My wife and I are walking along the banks of the river.我和妻子正沿河岸走着.

题目

My wife and I are walking along the banks of the river.我和妻子正沿河岸走着.
请问bank为什么要加s呢?前后文是Here is another photograph of the village.My wife and I are walking along the banks of the river.We are on the left.There is a boy in the water.He is swiming across the river,

答案

强调河岸的两侧,他们只是在其中同一侧,而不是一个在左侧,一个在右侧...