life,wife,knife的复数是什么?

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life,wife,knife的复数是什么?

life,wife,knife的复数是什么?
life,wife,knife的复数是什么?

life,wife,knife的复数是什么?
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

以f或fe结尾的单词复数改f为v再+es(或s)
所以这里
life->lives
wife->wives
knife->knives

life,-------lives
wife,-------wives
knife-------knives