life,wife,knife的复数是什么?

问题描述:

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---safesgulf---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