
“Then” is most commonly used as an adverb meaning “at that time,” “next” or “as a consequence.”
Examples:
1. Betty got out on the dance floor, then did the Macarena. (Betty got out on the dance floor. Next, she did the Macarena.)
2. Doing the Macarena was more fun then. (Doing the Macarena was more fun at that time.)
3. If you don’t do the Macarena, then you are not cool. (If you don’t do the Macarena, as a consequence, you are not cool.)
“Than” is usually a conjunction that expresses comparison or choice.
Examples:
1. No dance is more awesome than the Macarena.
2. I would rather do the Macarena than the Electric Slide.
The bottom line:When you are trying to convey time, use “then.” When you are trying to make a comparison, use “than.”