Students practice forming comparative and superlative adverbs on this educational worksheet.

To complete this worksheet, we need to change each adverb into its comparative and superlative forms.

Here is the step-by-step logic:
1. Look at the adverb: Is it a short word or a long word?
2. Long words (2+ syllables): Usually, we add more for comparative and most for superlative. (e.g., "frequently" becomes "more frequently").
3. Short words (1 syllable): Usually, we add -er for comparative and -est for superlative. (e.g., "fast" becomes "faster").
4. Irregular words: Some words don't follow the rules (like "well" or "badly"). We have to memorize these.

Let's go through the list:

1. recently: Long word. Add *more* and *most*. -> more recently / most recently.
2. frequently: Long word. Add *more* and *most*. -> more frequently / most frequently.
3. effectively: Long word. Add *more* and *most*. -> more effectively / most effectively.
4. well: Irregular. The comparative is *better*, superlative is *best*.
5. generally: Long word. Add *more* and *most*. -> more generally / most generally.
6. importantly: Long word. Add *more* and *most*. -> more importantly / most importantly.
7. intently: Long word. Add *more* and *most*. -> more intently / most intently.
8. badly: Irregular. The comparative is *worse*, superlative is *worst*.
9. often: Can be *more often* or *oftener*. Usually, *more often* is safer in modern English, but *most often* is standard for superlative. Let's stick to the standard *more/most* for safety. -> more often / most often.
10. hard: Short word. Add *-er* and *-est*. -> harder / hardest.
11. little: Irregular. The comparative is *less*, superlative is *least*.
12. late: Short word. Add *-r* and *-st* (because it ends in e). -> later / latest.
13. long: Short word. Add *-er* and *-est*. -> longer / longest.
14. quietly: Long word. Add *more* and *most*. -> more quietly / most quietly.
15. much: Irregular. The comparative is *more*, superlative is *most*.

Final Answer:
1. more recently / most recently
2. more frequently / most frequently
3. more effectively / most effectively
4. better / best
5. more generally / most generally
6. more importantly / most importantly
7. more intently / most intently
8. worse / worst
9. more often / most often
10. harder / hardest
11. less / least
12. later / latest
13. longer / longest
14. more quietly / most quietly
15. more / most