John reads the book. (direct object)

John's mother Felicity gave me a present. (indirect object without a preposition)

She listened to the radio. (prepositional object)

They elected him president. (predicative /object complement)

She met him in the park.

She is in the park. (obligatory adverbial / adverbial complement)

The predicate provides information about the subject, such as what the subject is doing or what the subject is like.

There are predicate nominative and predicate adjective.

Here are some examples of predicate nominative:

1. My favorite pets were a squirrel and a rabbit.

(pets = subject, were = verb, squirrel, rabbit = predicate nominatives)

2. Our chief crops are corn, wheat, and hay.

(crops = subject, are = verb, corn, wheat, hay = predicate nominatives)

3. Mr. Jones is an accountant and a big game hunter.

(Mr. Jones = subject, is = verb, accountant, hunter = predicate nominatives)

4. The owners of the race car include Bill, Pete, and Sam.

(owners = subject, include = verb, Bill, Pete, Sam = predicate nominatives)

5. My favorite holidays are Christmas and Easter.

(holidays = subject, are = verb, Christmas, Easter = predicate nominatives)