keys
1、名词由单数变复数的基本方法如下:
①在单数名词词尾加s.如: map一
maps,boy→boys,horse→horses,table-tables.
②s,0,X ,sh,ch结尾的词加es.如:
class + classes,box→boxes,hero + heroes,[注]:少数以o结尾的词，变复数时只加s.
如: photo - photos,piano + pianos.
③以辅音字母加y结尾的名词,变y为i,再加es.如:
family + families,city→cities,party→partie
④以f或fe结尾的名词，变f或fe为v,再加es.如:
shelf + shelves,wolf - wolves,life→lives,kn 2、不规则变化:
man→men,woman→women,sheep→shee 不可数名词一般没有复数形式,说明其数量时,要用有关计量名词.如: a bag of
rice→two bags of rice,a piece of
paper→three pieces of paper,a bottle of milk + five bottles of milk.
