What is the part of speech for usually and my in sentence It hard little brother to recall what he has done?

Let's break down the sentence and identify the parts of speech:

* It: This is a pronoun, specifically a subject pronoun, as it is the subject of the sentence.

* is This is a verb, specifically the linking verb "be" in its present tense form.

* hard: This is an adjective, modifying the noun "brother."

* little: This is an adjective, also modifying the noun "brother."

* brother: This is a noun, the object of the linking verb "is."

* to recall: This is an infinitive acting as an adjective modifying the noun "brother."

* what: This is a pronoun, specifically an interrogative pronoun, serving as the object of the verb "has done."

* he: This is a pronoun, specifically a subject pronoun, the subject of the verb "has done."

* has done: This is a verb in the present perfect tense.

There's no "usually" or "my" in this sentence. So, we can't analyze those words. If you meant to say "It is usually hard for my little brother to recall..." then:

* usually: This is an adverb modifying the adjective "hard."

* my: This is a possessive adjective modifying the noun "brother."