以f，fe结尾，去f，fe变ves。
以-f或-fe结尾的名词，一般将-f，-fe去掉，加-ves。如：wife-wives, wolf-wolves, calf-calves.
这类名词还有：life, knife, self, shelf, leaf, thief, sheaf, half等。
相关介绍
He always bought two loaves of stale bread.
他总是要买两个不新鲜的面包。
All the loaves of bread baked at the same time.
同时烘焙的所有的面包。
And it'd still got the fish and the loaves on it.
里面仍然还有鱼和切片面包。
