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backpacks
oranges
watches
pens
--What’re these ? --They’re … .
名词单数变复数
(一)规则变化:
1.加s (mothers, fathers, sisters, brothers)
2.以s, x, ch, sh结尾的名词加es
( buses, boxes, watches )
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.
cousins family families
child children man men
pencil cases
sheep sheep
句子单数变复数
1. This is a Biblioteka Baiduook.
These are books.
2. That is an eraser. Those are erasers.
3. It is a red apple. They are red apples.
4. I am a boy.
We are boys.
5. He / She is a teacher. They are teachers.
6. What’s this ?
What’re these ?
shelf (架子) leaf (叶子) wolf (狼)
6. oo ee： foot(脚) tooth(牙齿) goose(鹅)
pens desks keys boxes
knife knives cards oranges
boys friends
parents mothers fathers
sisters brothers sons daughters
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, friends
(二)不规则变化:
1.加es:potatoes (土豆) tomatoes (西红柿)
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
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 /
2.man, woman men, women （男人，妇女） 3. child（孩子） children 4.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼) Chinese(中国人) Japanese(日本人)
5. 以 f / fe结尾的,变f为v, 再加es
wife(妻子) knife (小刀)
