表示单纯的食物、水果时不可数
比如
I'm hungry. I want some food.
There is some fruit on the table.
表示裤缓携几哪告种食物、水果时胡伏可数
We have a lot of foods. Fish, meat, chicken, which one would like?
All kinds of fruits are available, including apples, pears, peaches, bananas and oranges.
做整体时不可数
强调种类时可数
food一直孙老乱都是说food的,没有含兆foods
fruit意为"水果""果类"时,作则档fruit
意为"农作物",作fruits
当做种类时用复数 同种而是指个数多少时用单数
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