[译] 多吃水果对身体有好处。
[误] Eating many fruits does good to your health.

[正] Eating much fruit does good to your health.
[注] fruit 是集合名词，常用作单数。只有在强调不同品种的水果时，fruit 才用作复数。如：What fruits do you like to eat?你喜欢吃哪些水果？