The past participle form of a verb is usually the same as the past tense form of the verb and ends in -ed. It is also known as the third form. Sometimes it is even called V3. It is used in the perfect tenses.
- I have read everything.
It is used in passive tenses.
- It was read by many people.
It is used as an adjective.
- He is the most relaxed man I know.
There are also many irregular verbs with different endings. Here is a complete irregular verb list.
Common mistakes with verbs.