人教版七年级英语上名词变复数讲解及练习(口诀)

4.These are dictionaries. 单数 This is a dictionary.
一般疑问句,并作肯定或否定回答
Are these dictionaries ? Yes, they are. No, they aren’t.
划线提问 What are these ?
Ⅲ. 变为一般疑问句
Is that pencil hers? 5.Are these his pencils? Are these pencils his?
3) 变复数句 Those are cars.
3.That’s an English dictionary. 1）变否定句
That’s not an English dictionary.
2）变一般疑问句，并作否定回答
Is that an English dictionary?
No, it isn’t.
This is not my mother.
2）变一般疑问句，并作肯定或否定回
答 Is this your mother ?
Yes, it is. / No, it isn’t.
2.That is a car. 1）变否定句
That is not a car. 2）划线提问 What’s that?
单数
指 示
this
–
代
词 that
–
I
–
人
称 you
–
代
词 he / she / it –
系动词 am / is
–
复数
these those
we you they are
句型转换
1.What’s this ? 复数
What’re these ?
指示代词
2.He’s a Chinese boy. 复数
给下列可数名词加复数．
bird--birds
card-- cards lady-- ladies
orange--oranges ruler-- rulers photo--photos
friend-- friends boy-- boys watch--watches
girl-- girls
case-- cases cat-- cats
3. 以“辅音字母+y”结尾的名词， 应改y为i，再加-es。
family families
comedy comedies
(喜剧)
4. 以“元音字母+y”结尾的名词， 直接在词尾加-s构成复数形式 。
boy boys day days
练习
city
(城市)
strawberry
(草莓)
key
cities strawberries keys
2. 那是她的英语字典吗? Is that her English dictionary?
3. 这是他的书吗? Is this his book?
4. 它是我的钥匙。 It is my key.
5. 这是Sonia的铅笔吗? 不, 它不是。 Is this Sonia’s pencil? No, it isn’t.
(动物园)
tomato tomatoes (西红柿) hero heroes (英雄)
以o结尾的名词, 表示无生命事物的名词，词尾加-s, 表示有生命事物的名词，词尾加-es。
加-es的名词有: potato, tomato, hero
巧记:
英雄爱吃 土豆炖西红柿。
• Sum up: 1.一般情况下,直接在名词词尾加-s. 2.以s,x,sh,ch结尾的名词,在词尾加-es. 3.以辅音字母加y结尾的名词，要变y为i再加-es.
What’s this in English?
It’s an apple.
What are these?
They are two apples.
--What’s this? --It’s a pen.
--What are these?
--They are pens.
This is my friend.
名词变复数
Imitate
Teacher:嗨, Anna. 这些是你的铅笔吗? Anna: 不，它们是 Bob的. Teacher: 还有这是他的绿色钢笔吗? Anna: 不，它不是. 绿色钢笔是他的. Teacher: 这个字典怎么样呢? Anna: 它是 Helen的. 还有这个绿色钢笔也是她的. Teacher: 还有这个橡皮? 那是你的吗? Anna: 是的，它是. Teacher: 谢谢你的帮助, Anna. Anna: 不用谢.
6. 那是Cindy的英汉字典吗? Is that Cindy’s English-Chinese dictionary?
7. 这是一本英语书吗? Is this an English book?
8. 它是一块桔红色的橡皮。 It is an orange eraser.
1.Are these your pencils? Are these pencils yours? 2.Is this your pencil? Is this pencil yours? 3.Are those your rulers? Are these pencils yours? 4.Is that her pencil box?
1.This is my clock. Is this your clock?
2.That is your ring. Is that your ring?
3.These are her books. Are these her books?
4.Those are his oranges. Are those his oranges?
5. 以f或fe结尾的名词，先将f或fe 变成v，再加-es构成复数形式。
knife knives
half halves
“小偷”(thief)的“妻子”(wife)用“刀子”(knife) 和 “树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。
练习
wife (妻子)
leaf
(树叶)
names pens cards rulers
2. 以s, x, ch, sh等结尾的名词， 在词尾加-es构成复数形式。
class box watch brush
classes boxes watches brushes
练习
bus buses
fox
(狐狸)
dish (盘子)
foxes dishes
3. This is his backpack. (一般疑问句) Is this his backpack?
4. That is an eraser. (根据划线部分提问) What’s that?
Ⅴ. Translation
1. 请原谅, 这是你的铅笔盒吗? Excuse me. Is this your pencil box?
They’re Chinese boys.
人
系动词
称
代
词
可数名词
3. This is a bike.
复数句 These are bikes.
指示代词 系动词
可数名词
注意：单数句子转变为复数句子，指示代
词、人称代词、系动词、可数名词都要变化 为复数形式。
二、句型转换 1.This is my mother. 1）变否定句
4.以“元音字母+y”结尾的名词，直接在词尾加-s .
5.以f或 fe结尾的名词，先将f或 fe变为v,再加-es.
6.以o结尾的名词,表示无生命事物的名词加-s, 表示有生命事物的名词加-es。
名词变复数歌诀
名词复数有变化，词尾常把-s加； 结尾若是s, x, ch, sh, 加上-es要记下； 若遇f, fe, 更要弄清其变化； 先将它们变成v，然后再把-es加； y结尾要分清，两种情况必须明； 不规则名词要注意，它的词形需牢记； 中日友好不变化，英法联军a变e。
wolf
(狼)
roof
(屋顶)
wives leaves wolves roofs
巧记：
“小偷”(thief)的“妻 子”(wife)用“刀子”(knife)
和“树叶”(leaf) 把“狼”(wolf)劈成两
6. 以o结尾的名词，有的加-s, 有 的加-es构成复数形式。
photo photos
zoo zoos
5.Those are my backpacks. Are those your backpacks?
Ⅳ.句型ห้องสมุดไป่ตู้换
1. This is my pencil. (一般疑问句) Is this your pencil?
2. Is that her eraser?(肯定回答及否定回答) Yes, it is. No, it isn’t.
These are my friends.
Who’s he? He’s my friend. Who’re they? They’re my friends.
1.一般情况下，直接在词尾加-s 构成复数形式。
car cars
backpack backpacks
book books
练习
name pen card ruler
wife-- wives
tree-- trees key-- keys
bed-- beds
hero--heroes family-families
dictionary--dictionaries question-- questions
leaf-- leaves
party-- parties cup-- cups