Father, I thank you that you have heard me.

Father, -- "Father" is the Greek noun that means "father" or any male ancestor so "forefathers." It is the word that Christ uses to address his own Father.

I -- This is from the first-person, singular form of the verb.

thank - The Greek word translated as "thank" means both to offer a favor and to be grateful for receiving favors. The two ideas were tied together. The idea is that bestowing a favor automatically creates thankfulness. This is related to the sense of "debt" in the Gospels, which is a topic Christ addresses more commonly, most noticeably in the Lord's Prayer.

you -- The word for "you" is the indirect object form of the singular, second-person pronoun in the form of an indirect object, which usually requires a preposition in English, like "to you."

that -- The word translated as "that" introduces a statement of fact or cause, "for what," "because," "since," and "wherefore."

you -- This is from the second-person, singular form of the verb.

have -- (WT) This helping verb "have" indicates that the verb is the tense indicating an action completed in the past. This is not the tense of the verb here.

heard  -- "Heard" is from a Greek verb that means "to hear" and "to listen." It has the same sense as the English not only of listening but of understanding.  It is the most common verb that Christ uses meaning "to hear." It also means "to listen" and "to understand," but amusingly, it also means "to be silent." The accusative object is the person/thing heard about, while the genitive is the person/thing heard from.

me. -- "Me" is the first-person possessive singular pronoun. As the genitive object of this verb it is the person heard from.