apple复数英语加s。
可数名词变复数
(1).一般情况下,直接加-s,如:book-books, bag-bags, cat-cats, bed-beds
(2).以s. x. sh. ch结尾,加-es,如:bus-buses, box-boxes, brush-brushes, watch-watches
(3).以"辅音字母+y"结尾,变y为i, 再加-es,如:family-families, strawberry-strawberries
(4).以"f或fe"结尾,变f或fe为v, 再加-es,如:knife-knives
(5)不规则名词复数:man ---men, woman---women, policeman---policemen, policewoman---policewomen, mouse---mice child---children foot---feet,.tooth---teeth fish---fish, people---people, Chinese---Chinese, Japanese---Japanese