<prompt> Analyze the following sentence and provide its syntactic structure.I have already completed the assignment.  <response>: The sentence I have already completed the assignment is a declarative sentence in the present perfect tense. Its syntactic structure can be analyzed as follows:Subject: I - a pronoun representing the speaker.Auxiliary Verb: have - an auxiliary verb used to form the present perfect tense.Adverb: already - an adverb modifying the verb completed to indicate that the action has been done before the expected time.Main Verb: completed - a transitive verb in its past participle form, representing the action done by the subject.Object: the assignment - a noun phrase that serves as the direct object of the verb, representing the thing that the action was performed on.Accordingly, the syntactic structure of the sentence can be diagrammed as: S NP I VP V have Adv already V completed NP the assignment 