What is the verb phrase He might have gone to his friends house?

The verb phrase in the sentence "He might have gone to his friend's house" is might have gone.

Here's why:

* Verb: The main verb is "gone."

* Auxiliary Verbs: The auxiliary verbs are "might" and "have." They work together to create the modal verb phrase "might have" which expresses possibility and past action.

The verb phrase "might have gone" indicates that there is a possibility that the subject went to his friend's house, but the speaker is unsure.