backpacks
oranges
watches
pens
--What’re these ?
--They’re … .
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--What’re those ? --They’re … .
maps
cases
keys
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名词单数变复数
(一)规则变化:
1.加s (mothers, fathers, sisters, brothers)
2.加s, x, ch, sh结尾的名词加es
( buses, boxes, watches )
3.以辅音字母加y结尾的名词,先改y为i, 再加es ( family -- families
dictionary -- dictionaries )
区别 key – keys boy -- boys
(二)不规则变化:
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二、句型转换 1.This is my mother. 1）变否定句
This is not my mother.
2）变一般疑问句，并作肯定回答
Is this your mother ?
Yes, it / she is.
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2.That is a car. 1）变否定句
That is not a car. 2）划线提问 What’s that?
4. I am a boy.
We are boys.
5. He / She is a teacher. They are teachers.
6. What’s this ?
What’re these ?
• 7. This is a dictionary • 8 That is your brother • 9 She is a girl • 10 It is an ID card • 11 He is my uncle • 12 I am a student
knife knives cards oranges
boys friends
parents mothers fathers
sisters brothers sons daughters
cousins family families
child children man men
pencil cases
sheep sheep
1.以o结尾的名词有生命的加es:
potatoes (土豆) tomatoes (西红柿)无 生命的在词尾加s :zoo(动物园)—zoos radio（收音机）---radios photo(照片）
---photos
2. man, woman （男人，妇女） 3. child（孩子）
men, women children
6. 以 f / fe结尾的,变f为v, 再加es
• wife(妻子) ——wives knife (小刀) ---knives
• shelf (架子)—shelves leaf (叶子) ---leaves
• wolf (狼)---wolves
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名词单数变复数后s / es 的读音
1.在清辅音后读 / s / desks maps
2.在元音和浊辅音后读 / z /
brothers pens
3.在/ s / / z / /∫/ / / / ∫t / / d /后
读 / iz / classes, watches, oranges
4.在/ t /后读/ ts /，在 / d /后读 / dz /
cats, friekeys boxes
4. 7. man-m- en
8.it--they
5. 9. parentp--arents 10.boyb–oys
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句子单数变复数
1. This is a book.
These are books.
2. That is an eraser. Those are erasers.
3. It is a red apple. They are red apples.
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4.Her family name’s Smith. 划线提问 What’s her family name?
5.My jacket is light blue. 划线提问
What color is your jacket?
6. is, that, brother, my, Dave 组词成句
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名词单数变复数
• tomato (西红柿） hero（英雄） negro （黑人）radio （收音机） photo （照片） life（生命） knife （小刀）thief（ 贼 ） roof （屋顶） zoo （动物园）piano（ 钢 琴）potato （土豆）
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单数
this
名词单数变复数
--What’s this? --It’s a pen.
--What are these?
--They are pens.
--What’s that? --It’s an English book.
--What are those?
--They are English books.
–
that
–
I
–
you
–
he / she / it –
am / is
–
复数
these those we you
they are
一、写出下列单词的复数
1. I-- we 2.am-- are 3.he –they
2. 4.pencilp--encils 5.watcwh-a- tches 3. 6.dictionary-d- ictionaries
Chinese(中国人) Japanese(日本人)
4.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼) ,people(人，人民）mouse（老鼠）--
mice
5. oo ee： foot(脚)—feet tooth(牙齿) --teeth goose(鹅)--geese
3) 变复数句 Those are cars.
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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.