可数名词变复数的变化规则

《可数名词变复数的变化规则》导学案
名词在英语学习中是非常重要的，它分为可数名词和不可数名词。

不可数名词可以简单地理解为无法用数计算的名词，比如肉类meat、chicken等,液体water，juice，orange，milk等。

可数名词分单数和复数，单数常和a, an, the冠词连用，如 a dog, an apple, 但是可数名词变复数是同学们在学习时接触过的语法现象，也是比较难以掌握的，同时也是每次考试涉及到的重要知识点，本节课我们一起总结可数名词变复数的规则。

一、名词复数的规则变化
1) 一般的名词在词尾加-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, cherries，countries
4) 以f或fe结尾的名词，多数变f为v加es
half---halves knife---knives leaf---leaves wolf---wolves
wife---wives life---lives thief---thieves；
5) 以o结尾的名词，有些加es
Negroes, heroes, tomatoes, potatoes（黑人英雄爱吃土豆和西红柿），
其它加s: radios, zoos, pianos, photos,
二、名词复数的不规则变化
1)改变内部的元音字母：
foot→ feet, tooth→ teeth, mouse→ mice，man→ men, woman→ women
2)单复数同形：
sheep→ sheep, deer→ deer, Chinese→ Chinese,
3）加ren
child→ children
3）集体名词， people ,class, police 等本身就是复数
三、复数的发音
一般情况加 -s 清辅音后读/s/ map-maps
浊辅音和元音后读 /z/ bag-bags /car-cars
以s, sh, ch, x等结尾加 -es 读 /iz/ bus-buses/ watch-watches
以ce, se, ze,等结尾加 -s 读 /iz/ license-licenses
以辅音字母+y结尾变y 为i再加es 读 /z/ baby---babie
名词单数变复数测试题
一: 名词单数变复数填空
1：orange text bed computer . apple house plane tree lesson shirt month
2：piano photo radio zoo
tomato .potato
3：class fox watch glass dress box bus
4：shelf knife wife life .
leaf thief
5：family country army .city stor y baby butterfly country
6：toy .play day key boy 二：把下列的单词变为复数形式
key boy family case backpack dictionary watch computer game notebook bag math alarm video tape hat pear egg apple carrot vegetable star sock shirt shoe skirt sweater clerk store shop_______
三：句子单数变复数
1：This is a book. . __________________________
2: That is an eraser. ___________________________
3: It is a red apple. ____________________________
4: I am a boy. ______________________________
5: He / She is a teacher. __________________________
6: What’s this? _________________________________
四：名词复数变单数练习
1：Those are my
2: They are English boys. __________________________
3: They are some erasers. ________________________
4: These are dictionaries. ___________________________
5: we are students. ___________________________
6: what color are your books ? ______________________
五：根据句意及所给单词填空。

1：________(this) are my English books.
2: The two boys are my _________(cousin)
3: ---- _________those your parents?
----Yes, they _________.
4: ---Who are the man and the woman in the picture?
----They are my __________.
5: My aunt Jane and my mother are ___________.
6: They are my __________(姨)。

7: I have two ___________(watch). They are on the desk. 8: I have some __________(photo) of my family.
9: Do you like these ____________(dictionary)?
10: Are those your _________(bus)?
六：汉译英；
1：这些是我的帽子。

2：那些不是课桌。

3：他们不是男孩。

4：这个棒球在沙发上吗？不，它在椅子下面。

5：这些字典是红色的吗？不，它们是蓝色的。