Many students have trouble to use the word “finished” correctly.
The confusion arises because finished operates both as an adjective and as the past tense and past participle of the verb to finish.
When you use it as in 'We're finished for today', then you are using it as an adjective.
On the other hand if you are using it as in 'We've finished work for today', then you are using it as the past participle of the verb to finish.
When you use it as an adjective, you can talk about things being finished as well as people being finished with something.
For example, if you say “My marriage is finished” then this means that your marriage was a disaster from the beginning and now you are happy that it's over.
If you are working on your home you may tell your friends that you won't be finished for at least another hour and a half.
If you use it as a verb however you may say, “I finished my homework two hours ago.”
As an adjective finish means:
1. ended or completed.
2. completed or perfected in all details, as a product: to pack and ship finished items.
3. polished to the highest degree of excellence: a dazzling and finished piece of writing.
4. highly skilled or accomplished: a finished violinist.
5. condemned, doomed, or in the process of extinction: The aristocracy was finished after the revolution.
6. (of livestock) fattened and ready for market.
As a verb finish means:
1. To arrive at or attain the end of: finish a race.
2. To bring to an end; terminate: finished cleaning the room.
3. To consume all of; use up: finish a pie.
4. To bring to a desired or required state: finish a painting. (meaning complete)
5. To give (wood, for example) a desired or particular surface texture.
6. To destroy; kill: finished the injured horse with a bullet.
7. To bring about the ruin of: The stock market crash finished many speculators.
8. To come to an end; stop.
9. To reach the end of a task, course, or relationship.
