1.一般名词复数是在名词后面加上“s”,如map→maps,bag→bags等;
2.以s,sh,ch,x等结尾的词加“es”,如bus→buses,watch→watches等;
3.以辅音字母+y结尾的词,变y为i加es,如baby→babies等;以元音字母+y结尾的名词变复数时,直接加s变复数,如monkey→monkeys,holiday→holidays,storey→storeys(楼层);
4.以o结尾的名词变复数时:
a)加s的名词有:photo→photos,piano→pianos,radio→radios,zoo→zoos
b)加es的名词有:
potato→potatoestomato→tomatoes
5.以f或fe结尾的名词变复数时:
a)加s的名词有:
belief→beliefsroof→roofs
safe→safesgulf→gulfs
b)去掉f,fe加ves的名词有:
half→halvesknife→knives
leaf→leaveswolf→wolves
wife→wiveslife→livesthief→thieves