语法学习—名词:可数名词+不可数名词（填空）

以s/sh/ch/x结尾的单词：加es：box—（boxes）bus--(buses) watch---(watches) brush--(brushes)
一般情况直接加s：dog--(dogs) book---(books) bag---(bags)
辅+o：tomato---(tomatoes) potato---(potatoes) hero---(heroes) 元+o 结尾的单词,直接加s:radio---(radios) zoo--(zoos) studio--(studios)
以f/fe结尾,该f/fe为v,再加es: leaf---(leaves) life---(lives) knife---(knives) wife---(wives) thief--(thieves)
改y为i:再加es,元+y :直接加s: city---(cities) country---(countries) family---(families) boy---(boys) key--(keys)
特殊变化： man---(men) woman--(women) tooth---(teeth) goose---(geese) foot---(feet) child---(children) mouse---(mice)
单复同形：sheep---（sheep） deer---(deer) fish--(fish) chinese---(Chinese) japanese---(Japanese) swiss---(Swiss)
再问： leaf---(leaves？？？
再答： 对， 和leave的三单一样
再问： 谢谢了