以f或fe结尾的名词变复数,怎么改,有几种改法

如题所述

以 f 结尾的名词 : 复数时 f 改为 ves
如 : calf => calves, elf => elves, half => halves, scarf => scarves, shelf => shelves, thief => thieves
以 fe 结尾的名词 :: 复数时 fe 改为 ves
如 : knife => knives, life => lives, wife => wives
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