Is a tomato a fruit or a vegetable?
（句中的fruit是可數名詞，表示水果的種類）
This pudding has two pounds of fresh fruit in it.
（這個布丁裏有兩磅鮮果。句中fruit是不可數名詞，表示水果的總稱）
Do you think raisins are a fruit or a vegetable?
They are neither fruit nor vegetables.