In formal English how do you express the actor of a gerund phrase which it is different from the actor of the main verb?

Question

Answer

The actor may be expressed by either a possessive form or an objective form.

Answer

By using a possessive structure such as the  s -genitive or a possessive determiner.

Answer

By using the objective form a pronoun; nouns do not take a different form.

Answer

The actor of the main verb is always the implicit actor of the gerund phrase.

Crowdly