Present perfect tense of the verb finish, the question is: if I finish my homework, can I play outside?

Have Finished.

Explanation:

The present perfect tense is demonstrated as the tense that is employed to represent the actions that began in past (non-specified time) but bears its present outcomes and this tense acts as an intermediary to the link between the time in which action began (past) and the present. It is represented by the 'use of has/have followed by the past participle form of the verb. Therefore, as per the question, the present perfect tense of the verb 'finish' would be 'have finished'. Thus, the conditional sentence would imply:

'If I have finished my homework, can I play outside?'.