sheep-sheep, deer-deer
特殊变化
man-men, woman-women
mouse-mice child-children
（3）不可数名词是指不能以数目计算，不可以分成个体的概念、状态、品质和感情或表示物质材料的东西。一般没有复数形式，不用不定冠词a/an.但可用数词+容器+of +不可数名词的结构。
语法练习：
6.There is some ___________(水)in the bottle.
7.There are some _________(刀) on the desk.
8.Trees and flowers__________(plant) every year.
9.British people eat_________ a lot, and they are usually cooked in different ways. A chicken B beef C fish D potatoes
10.—Have you heard the latest news?
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七年级英语上册Unit 4教案