ellen brought her (uncle) a picture of the mountains

is the parenthesis the subject the direct object indirect object or predicartive nominative

I'll be glad to check your answer.

indirect object

is it indirect object

Yes.

In the given sentence, the word "uncle" in parenthesis is acting as an appositive, providing additional information about Ellen. An appositive is a noun or noun phrase that renames or clarifies another noun or pronoun.

In terms of sentence structure, the subject is "Ellen," the verb is "brought," and the direct object is "picture." The appositive "uncle" is not directly related to the subject or the verb and does not serve a grammatical function like subject, direct object, indirect object, or predicative nominative. Its function is to provide additional descriptive information about Ellen's relation to the person she brought the picture to.