Which is the correct sentence?

[blissful]

Hi

Which is the correct sentence?

Any difference in meaning?

1) I cannot go out unless I finish my homework first.
2) I cannot go out unless I have finished my homework first.

Thank you

[5jj]

This is a similar situation to the one you asked about here: Re: What’s the difference between these sentences?

[TheParser]

***** NOT A TEACHER *****


(1) Mona: Can I go out?

Mother: Is your homework finished?

Mona: No, Mommy.

Mother: I'm sorry, but you cannot go out unless you finish your homework first.

Mona: OK, Mommy. I'll do my homework now.

*****

(2) Joe: Can I go out?

Father: Sorry, son, but you may not go out unless you have already finished

your homework, and I don't think you have finished it yet. You never finish things on time.

Joe: I'm a changed boy, Dad. Look! Here is my finished homework.

Father: Good job, son. Have fun!