1.adam is better/the best than sam tennis,but john is better/the best tennis player in our class.
2.the weather yesterday was worse/bad than last week,but the weather today is the worse/the worst weather this year.
3.bicycle are the cheapest/cheaper form of transport,but they are also the slowest/slower than cars and plance
1. Better, the best.
2. Worse, the worst.
3. Cheapest, slower.