A past participle ends in -ed or -en and it has two functions:Originally Posted by paige_donna
EX: This car is heated. (Verb: "is"; Adjective "heated")
EX: We had a heated argument. (Adjective "heated")
As an adjective, the past participle occurs after the verb BE (is, am, was, were, been) or it modifies a noun.
2) part of a verb
EX: The stove has heated the room. (Verb: "has"; Part of a verb: "heated")
As a part of a verb, the past participle occurs with the verb HAVE (have, has, had).
Past tense refers to a verb. (Please note that, past participles are not verbs.)
EX: The stove heated the room.
In the example above, the word 'heated' doesn't do the following things:
It doesn't occur with BE (is, am, was, were, been)
It doesn't occur with HAVE (have, has, have)
It doesn't modify a noun (argument)
"heated" functions all by itself. It's a verb, and the -ed ending tells us it's a past tense verb. :D
All the best, :D