1. Gerunds: These are verb forms ending in "-ing" that function as nouns.
* Example: *Swimming* is my favorite activity.
2. Infinitives: These are verb forms that are usually preceded by "to" and function as nouns, adjectives, or adverbs.
* Example: *To eat* is a necessity. (noun)
* Example: I have a *lot to do* today. (adjective)
* Example: I went *to see* a movie. (adverb)
3. Participles: These are verb forms that function as adjectives. They can be present participles (ending in "-ing") or past participles (usually ending in "-ed" or "-en").
* Example: The *running* water was refreshing. (present participle)
* Example: The *broken* window needed to be replaced. (past participle)
Let me know if you'd like more examples or further explanation!