We are walking along the banks of the river为什么bank要加S

因为一条河有两个bank.如果指明是在具体的一个bank时,就不用复数,如；We are walking along the left bank of the river.

因为河有两岸

因为河两边都有岸啊

相甯作答：

①因为全句是My wife and I are walking along the banks of the river. 下一句是 We are on the left.

上一句是范指！下一句是特指！可以明白吗？因为这是初级英语，比较小学生思维！所以描述句子会比较广泛。明明一句话可以说完，偏偏用好几句。

②举例子：我们正在爬花园里的树！（花园里有很多树！）就涉及到范指！We are climbing the trees in the garden！

但图片和现实，肯定是爬在某一棵树上。为什么要用复数？你会感觉很奇怪。因此，就有下一句，we are in a Litchi tree。我们在一棵荔枝树上。

③如果第二句we are on the left.（bank）/ we are in a Litchi tree.比第一句更先说明，则无需复数。

变成，My wife and I are on the  left bank，we are walking along the bank of river。

④大人思维就不是小学生思维了！就会更加简洁直白！

My wife and I are walking along the left bank of the river.

其实学英语要多从小学生思维开始，逐渐逐渐进步，谢谢！