英语名词单数变复数口诀
(一) 规则变化
名词单数变复数，直接加 -s 占多数；
s, x, z, ch, sh 来结尾，直接加上 -es；
词尾是 f 或 fe，加 -s 之前先变 ve；
辅母 + y 在词尾，把 y 变 i 再加 -es；
词尾字母若是 o，常用三个已足够，要加 -es 请记好，hero, tomato, potato。
(二) 不规则变化
男人女人 a 变 e，鹅足牙 oo 变 ee；
老鼠虱婆也好记，ous 变 ic；
孩子加上 ren，鱼鹿绵羊不用变。
【解说】
1. 英语名词有单数和复数的区别，单数表示“一”，复数表示“多于一。”名词由单数变复数，多数是规则的变，直接加 -s，例如：book → books, girl → girls。但以 -s, -z, -x, -ch, -sh 结尾的名词，变成复数时加 -es, 例如：bus → buses, buzz → buzzes, box → boxes, watch → watches, brush → brushes
2. -f(e) 结尾的名词单数变复数歌诀：① 树叶半数自已黄，妻子拿刀去割粮，架后窜出一只狼，就像强盗逃命忙。② 妻子去宰狼，小偷吓得发了慌，躲在架后保己命，半片树叶遮目光。例如：leaf (树叶，叶子)，half (一半)，self (自已)，wife (妻子)，knife (刀子)，shelf (架子)，wolf (狼), thief (窃贼，强盗) 和 life (生命)，这些名词变成复数时，都要改 -f (e) 为 v，再加 -es。
3. -f 结尾的名词直接加 -s 变复数歌诀：海湾边、屋顶上，首领奴仆两相望；谁说他们无信仰，证据写在手帕上。例如：gulf, roof, chief, serf, belief, proof, handkerchief，这些名词变复数直接加 -s。
注：scarf(围巾；披风) 可以先改 f 为 ve 再加-s，也可直接加 -s。
4. 辅音字母 + y 结尾的名词，把 y 变 i 加 -es。例如：baby → babies, country → countries, family → families；而 -y 前是元音时，-y 不变，直接加 -s。例如：day → days, boy → boys
5. 以 -o 结尾的名词变复数时，多数直接加 -s。例如：radio → radios, piano → pianos, kangaroo → kangaroos；有的须加 -es，中学课本中有几个这样的单词，可以通过一句口诀来记忆：黑人英雄爱吃西红柿和土豆。即：Negro → Negroes, hero → heroes, tomato → tomatoes, potato → potatoes；有的以 o 结尾的名词既可加 -s 也可加 -es。例如：volcano (火山) → volcanos / volcanoes 等。
6. 名词复数的不规则变化需要特别记忆。例如：man → men, woman → women, goose → geese, foot → feet, tooth → teeth, mouse → mice, louse (虱子) → lice, child → children, fish → fish, deer (鹿) → deer, sheep → sheep 等。
7. 初中课本中表示“某国人”的名词复数形式变化可通过歌诀记忆：中日不变英法变，其余 -s 加后面。例如：Chinese → Chinese, Japanese → Japanese；
Englishman → Englishmen, Englishwoman → Englishwomen, Frenchman → Frenchmen, Frenchwoman → Frenchwomen；
American → Americans, Rusian → Rusians, Arab → Arabs, German → Germans 等。
不规则名词复数：
man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice
child-children, foot-feet,. tooth-teeth, fish-fish, sheep-sheep
people-people, Chinese-Chinese, Japanese-Japanese,当people后加上s时即peoples表示“民族”例如There are 56 peoples in China.
以下词为常为不可数名词，他们的复数形式就是他们本身。
water(水) milk(牛奶) tea(茶) rice(米饭) orange（橙汁）juice（果汁）bread（面包）
不可数名词的数量关系可借助量词表示，如。a cup of tea two cups of tea
名词复数练习题
1）.填入所给名词的正确形式
1. I have two_____ (knife)
2. There are many _____ here. (box)
3. There are many _____ on the road. (bus)
4. A few _____ are drawing on the wall. (boy)
5. The _____ are playing football now. (child)
2）选择填空
1. They come from different ______
A. country B. countries C. a country D. countrys
2. How many ______ do you see in the picture?
A. tomatos B. tomatoes C. tomato D. the tomato
3. There are some ______ in these _______.
A.knifes„pencil-boxes B.knives„pencils-box C.knives„pencil-box D.knives„pencils-boxes
4. There is no ______ in the plate.
A. apples B. oranges C. rice D. eggs
5. _______ are good for our health.
A. Tomatos B. Tomatoes C. Tomato
6. I like to eat cake with ______.
A. cherries B. cherry C.cherrys
7. ______ and ______ are not friends.
A. Foxs„wolfs B.Foxes wolfs C.Foxes„wolves
8. Do you want to drink much?
A.a milk B.milk C.milks
9. This is ______ room. It’s very big.
A.Lily and Lucy’s B.Lily’s and Lucy’s C.Lily’s and Lucy
10. Do you want some ______ for supper?
A、a potato B、potatoes C、potatos
11. In autumn，you can see a lot of______on the ground.
A、leaf B、leafs C、leaves
12. My sister has two ______ . One is old，the other is new.
A、a watch B、watchs C、watches
13.There ______on the wall .They are very beautiful.
A. are photoes B. are photos C. is a photo D. is photos
14. That’s ______ art book.
A. an B. a C. the D are
15. There______two______ in the box.
A. is watch B. are watches C. are watch D. is watches
3）请用括号中名词的正确形式填空
1． Look at those _______. (child)
2． I can see a __________ standing near the door. (policeman)
3． Do you want some ________ for dinner? (potato)
4． In autumn, you can see a lot of _______ on the ground.(leaf)
5． He has two _______.One is blue , the other is yellow.( box) radio复数
6． Two ________ live in this building .( family )
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