以fe结尾的单词怎样变复数?

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以fe结尾的单词怎样变复数?以fe结尾的单词怎样变复数?以fe结尾的单词怎样变复数?fe----ves如wife--wives;calf---calves;knife----knives;thief-

以fe结尾的单词怎样变复数?
以fe结尾的单词怎样变复数?

以fe结尾的单词怎样变复数?
fe----ves如
wife--wives; calf---calves; knife----knives;
thief---thieves; wolf----wolves
shelf---shelves; self---selves; life----lives
handkerchief--handkerchieves,
leaf----leaves half----halves

fe变ves

fe----ves

以辅音字母加y结尾的名词,变y为i加es: cities, babies, enemies.?4)以f或fe结尾的名词,多数变f为v加es: wives, knives.但有些词只加s: roofs, proof s, chiefs.?
1)单数名词加s: students, apples, bags, trees, books, brothers.?
2)以s、x、sh、ch...

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以辅音字母加y结尾的名词,变y为i加es: cities, babies, enemies.?4)以f或fe结尾的名词,多数变f为v加es: wives, knives.但有些词只加s: roofs, proof s, chiefs.?
1)单数名词加s: students, apples, bags, trees, books, brothers.?
2)以s、x、sh、ch结尾的名词加es: glasses, boxes, brushes, matches.?
3)以辅音字母加y结尾的名词,变y为i加es: cities, babies, enemies.?4)以f或fe结尾的名词,多数变f为v加es: wives, knives.但有些词只加s: roofs, proof s, chiefs.?
5)以o结尾的名词,有些加es: Negroes, heroes, tomatoes, potatoes.其它加s: radio s, zoos, pianos, photos.?
6)不规则名词:foot→feet, goose→geese, tooth→teeth, child→children, man→me n, woman→women, sheep→sheep, deer→deer, mouse→mice.
7)某些外来词变复数:datum→data, medium→media, bacterium→bacteria, curriculum→curricula, criterion→criteria, phenomenon→phenomena. (?um/?on→a)?analysis→analyses, basis→bases, crisis→crises, diagnosis→diagnoses.(?is→es )?
8)复合名词变复数:以不可数名词结尾的复合名词无复数形式,如:homework.?
以man或woman为前缀的复合名词变复数,前后两个名词都变复数,如:manservant→menservants, woman student women students.?
其它复合名词变复数:grown?up→grown?ups, brother?in?law→brothers?in?law, stand?by→stands?by.?
9)复合形容词做定语时,其中的名词保持单数:a six?year?old boy,a two?hundred?page book
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
leaf-leaves(树叶)
scarf-scarves/scarfs(围巾)
handkerchief-handkerchieves/handkerchiefs(手帕)
knife-knives(刀子)
thief-thieves(小偷)
life-lives(生命)
self-selves(自己,myself-ourselves)
half-halves(一半)
wolf-wolves(狼)
f结尾的名词变复数,是变f为v再加-es,还是在f后直接加-s,可用两首打油诗来帮助记忆:
(A)
thief,wolf,knife, 贼狼刀,贼狼刀;
shelf,self,wife,loaf, 书架自己的妻子吃面包;
elf,sheaf,leaf, 小精灵(有)一捆树叶;
calf,life,half, 小牛(的)生命一半了。
(B)
“妻子”遇“狼”拿起“刀”, 吓得“强盗”满街跑;
碰到“架子”“毁”己“命”, “手帕”“树叶”“半”空飘。
注:
以上被引号引入的部分,皆为以“f”或“fe”结尾的名词,如变为复数一律先变“f”或“fe”为“v”加上“es”读[iz]。例如:
wife—wives,wolf—wolves,
knife—knives,thief—thieves,
shelf—shelves,self—selves,
life—lives,handkerchief—handkerchieves,
leaf—leaves,half—halves
其中handkerchief还可以有加“-s”形式:handkerchiefs。
另外,在中学课本中出现了四个以f结尾的单词是由加“-s”构成复数。这四个词是:belif,gulf,roof,serf(农奴)。记住:The serf had thebelief that there is a gulf in his roof

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