In the following examples, the ones marked 'correct' illustrate the required use of the past participle for the phrase. The examples marked 'incorrect' illustrate the phrase with use of the simple past tense, which is incorrect in the phrase.
Incorrect: That car is broke down
Correct: That couch is all torn up.
Incorrect: That couch is all tore up.
Correct: I am so hungry because I haven't eaten all day.
Incorrect: I am so hungry because I haven't ate all day.
Correct: Have you gone to the store yet dear?
Incorrect: Have you went to the store yet dear.