What part of speech is in this sentence we have studied grammar thoroughly for one semester you expect to make good grades on the

The sentence you provided is incomplete. It seems like a portion of a longer sentence. To determine the part of speech of a word, we need the full context of the sentence.

However, I can analyze the words you provided:

* We - Pronoun (subject)

* have studied - Verb (present perfect)

* grammar - Noun (object of the verb)

* thoroughly - Adverb (modifies the verb "studied")

* for - Preposition

* one semester - Noun phrase (object of the preposition "for")

* you - Pronoun (subject)

* expect - Verb (present tense)

* to make - Infinitive (part of the verb phrase "expect to make")

* good - Adjective (modifies the noun "grades")

* grades - Noun (object of the infinitive "to make")

* on - Preposition

* the - Definite article

To understand the entire sentence and the parts of speech, please provide the complete sentence.