wife为什么有复数形式呀

因为会有妻子们，复数形式是 wives例如：

1.I thought it was unethical for doctors to operate upon their wives.我认为医生为自己妻子做手术不合乎职业道德。

2.A great deal of Jeff's money went in alimony to his three former wives.杰夫的很大一部分钱都用在了向他的前三任妻子支付赡养费。

3.The law was designed to protect wives, and, to a lesser extent, children.这条法律是为了保护妻子，其次是保护子女。