名词单数变复数[上学期]

课件20张PPT。名词单数变复数--What are these?--What’s this?--It’s a pen.--They are pens.--What are those?--What’s that?--It’s an English book.--They are English books.backpackswatchesorangespens--What’re these ?
--They’re … .mapscaseskeys--What’re those ?
--They’re … .名词单数变复数
(一)规则变化:
1.加s 2.加s, x, ch, sh结尾的名词加es3.以辅音字母加y结尾的名词,先改y为i, 再加es (mothers, fathers, sisters, brothers)( buses, boxes, watches )( family -- families
dictionary -- dictionaries ) 区别 key – keys boy -- boys(二)不规则变化:4.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼) 2.man, woman men, women1.加es:potatoes (土豆) tomatoes (西红柿)Chinese(中国人) Japanese(日本人) 6. oo ee： foot(脚) tooth(牙齿) goose(鹅)5. 以 f / fe结尾的,变f为v, 再加eswife(妻子) knife (小刀)
shelf (架子) leaf (叶子) wolf (狼)3. child（孩子） children（男人，妇女）名词单数变复数后s / es 的读音
1.在清辅音后读 / s /
2.在元音和浊辅音后读 / z /
3.在/ s / / z / /∫/ / / / t / / d /后
读 / iz /
4.在/ t /后读/ ts /，在 / d /后读 / dz /∫desks mapsbrothers pensclasses, watches, orangescats, friends pen desk key box knife card orange boy friend parent mother father sister brother son daughter cousin family child man pencil case sheepssssesknivessssssssssssfamilieschildrenmenssheep句子单数变复数
This is a book.
That is an eraser.
It is a red apple.
I am a boy.
He / She is a teacher.
What’s this ? These are books.
Those are erasers.
They are red apples.
We are boys.
They are teachers.
What’re these ?this –
that –
I –
you –
he / she / it –
am / is – thesethoseweyoutheyare 单数 复数一、写出下列单词的复数
I-- 2.am-- 3.he –
4.pencil-- 5.watch--
6.dictionary--
7. man-- 8.it--
9. parent -- 10.boy– wearetheypencils watchesdictionaries men they parentsboys二、句型转换
1.This is my mother.
1）变否定句
2）变一般疑问句，并作肯定回答This is not my mother.
Is this your mother ?
Yes, it / she is.
2.That is a car.
1）变否定句
2）划线提问
3) 变复数句That is not a car.
What’s that?
Those are cars.
3.That’s an English dictionary.
1）变否定句
2）变一般疑问句，并作否定回答That’s not an English dictionary.
Is that an English dictionary?
No, it isn’t.
4.Her family name’s Smith.
5.My jacket is light blue.
6. is, that, brother, my, Dave 组词成句划线提问划线提问What’s her family name?
What color is your jacket?
That is my brother , Dave.句型转换
1.What’s this ? 复数
What’re these ?2.He’s a Chinese boy. 复数They’re Chinese boys. 3.This is a bike. 否定句
复数句
一般疑问句，并作肯定回答This is not a bike.
These are bikes.
Is this a bike ?
Yes, it is.4.That is my brother.

否定句
一般疑问句，并作否定回答That is not my brother.
Is that your brother ?
No, it / he isn’t.5.These are dictionaries.
单数
一般疑问句,并作肯定回答
划线提问 This is a dictionary.Are these dictionaries ? Yes, they are.What are these ?