Which tense does the sentence "He will have finished by the time we arrive." represent?

The sentence "He will have finished by the time we arrive." represents the Future Perfect tense. This tense is used to indicate an action that will be completed before a specific point in the future. In this case, "will have finished" conveys that the action of finishing will take place before the arrival occurs.

The structure of the Future Perfect tense typically includes the auxiliary verbs "will" and "have" followed by the past participle of the main verb, which in this instance is "finished." This construction emphasizes the completion of the action in relation to a future time frame, indicated here by "by the time we arrive."

Understanding this tense is crucial as it helps convey the timing and sequence of events effectively. Recognizing when an action is expected to be completed before another future event is a key aspect of mastering English verb tenses.