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1、以y结尾的专有名词,或元音字母+y 结尾的名词变复数时,直接加s变复数: 如: two Marys the Henrys
monkey---monkeys holiday---holidays
比较: 层楼: storey ---storeys story---stories
2、以o 结尾的名词,变复数时:
a. 加s, 如: photo---photos piano---pianos radio---radios zoo---zoos;
b. 加es, 如: potato--potatoes tomato--tomatoes
c. 均可, 如: zero---zeros / zeroes
3、以f或fe 结尾的名词变复数时: a. 加s, 如: belief---beliefs roof---roofs
safe---safes gulf---gulfs;
b. 去f,fe 加ves,如: half---halves
knife---knives leaf---leaves wolf---wolves
wife---wives life---lives thief---thieves;
c. 均可, 如:handkerchief: handkerchiefs / handkerchieves