The noun FRUIT is na exception where it is both countable and uncountable. So its plural can be either FRUIT or FRUITS.
(1) When fruit refers to a group in a non-specific way, we tend to use the noun in its singular form:
- You should eat fruit every day.
- Would you like some fruit?
- There isn't much fresh fruit available in winter.
(2) When we are emphasising the different kinds of fruit, we use the noun in its plural form:
- My favorite fruits are bananas, apples and strawberries.
- I love oranges and other citrus fruits.
- The juice is made from a variety of fresh fruits.
A piece of fruit: used ro refer to one fruit without specifying which one is it:
- She Always has a piece of fruit for her breakfast.
The fruit of something: expression meaning the good results that you obtain:
- The award she received is the fruit of her hardwork.
By Luiza Gomes