七上英语《Unit2 This is my sister》教学设计教案免费下载3
七上英语《Unit2 This is my sister》教学设计教案免费下载3第3页

   学习任务二: 1 听录音,完成2a.2b,小组核对答案.

   2 介绍家人,引入复数的概念.

   This is my f________, and this is my m________. They are my p_________.

名词变复数:

1.名词 专有名词

普通名词 可数名词, 有单、复数。

不可数名词,没有单、复数。

2.肉和液体名词是不可数名词。Meat肉 ,pork猪肉,chicken鸡肉, milk牛奶, tea茶,wine酒,water水,

3.一个称为单数,两个或两个以上称为复数。如,a bag, ten bags.两个或两个以上后面的名词要变为复数。

4.可数名词复数的构成规则:

(1)一般在名词末加s,如,pens, erasers.

(2)以s, x, ch , sh结尾的名词,末尾加es. 如,Watches, boxes ,classes, brushes, buses.

(3)以"辅音字母+y" 结尾的名词,先把y去掉,再加ies. factory-factories, family-families, dictionary-dictionaries, comedy-comedies, documentary-documentaries, strawberry-strawberries.

(4)以f或fe结尾的,把f 或fe去掉,加ves. 如,knife-knives, thief-thieves ,leaf-leaves.

(5)以o结尾的名词,有生命的加es , 无生命的加s .如,photos, zoos , tomatoes , potatoes , heroes ,

(6)本身是复数的词:

People人们 , clothes衣服 , pants裤子 , trousers裤子 , Chinese中国人 , Japanese日本人 , shorts 短裤, family家人 , glasses眼镜 , police警察

(7)单、复数同形:sheep绵羊, deer鹿 ,fish,

(8)特殊复数:

this ---these , that-those, I-we , you-you ,

am he his

are , she they her their ,

Is it its

(9)不规则名词复数学一个记一个,

Man-men , woman-women , foot-feet , tooth-teeth , child-children, mouse-mice ,

  

   把下列单词变为复数形式.

   mother ---__________ father---_________ brother---_________ sister---________

   friend---___________ grandfather---____________grandmother---____________

总结名词变复数的规则:______________________________________