英语单词复数形式什么情况加s什么情况?什么情况下加es?答:2.以s,x,sh,ch结尾,加es,如:bus-buses,box-boxes,watch-watches.3.以辅音字母加y结尾,变y为i,再加es,如:family-families,hobby-hobbies.4.以f或fe结尾,变f或fe为v,再加es,如:thief-thieves,knife-knives.5.以o结尾,加es,如:mango-mangoes.加s,如:radio-radios,photo-photos.6.不规则变化,如:...