1. Forming the continuous tenses:
* Present continuous: I am walking.
* Past continuous: I was walking.
* Future continuous: I will be walking.
2. As adjectives:
* The running water was cold.
* The singing bird was beautiful.
3. As nouns:
* Swimming is good exercise.
* Reading is my favorite hobby.
4. After certain verbs:
* I enjoy singing.
* She started dancing.
5. In participial phrases:
* Walking down the street, I saw a friend.
* Having finished my homework, I went to the park.
Examples of verbs ending in "-ing":
* walking
* singing
* eating
* running
* playing
* writing
* reading
* listening
* watching
* dancing
* swimming
Note: Not all words ending in "-ing" are verbs. Some are nouns (e.g., "morning," "wedding") or adjectives (e.g., "charming," "interesting").