source: Learn English with Let's Talk 2015年9月2日
Take the quiz - http://www.learnex.in/gradually-vs-ev...
Gradually: means slowly, step by step, little by little. It is the opposite of ‘suddenly’.
In Spoken English, when you want to say something happened slowly, or step by step, you use gradually.
Example: Gradually he learned to live alone.
Example: My vocabulary is gradually increasing.
Example: The young boy left his bicycle out in the rain for weeks, so it gradually began to rust.
Eventually: means ‘ultimately, something happens after a long time. It is also used to say what the result of the outcome was.
Example: He will eventually take control of the company when his father retires.
Example: She will eventually get married and have kids.
Example: Eventually, the world will run out of fossil fuel.