tense after 'after'

1. You may change the password after you finished setting up the account tomorrow. (Wrong)
2. You may change the password after you finish setting up the account tomorrow. (Right)

Present tenses are often used instead of "will + verb (basic form)" to refer to the future in subordinate clauses. This happens not only in after conjunctions of time but in most other subordinate clauses – for instance, after if, whether and when.
I’ll write to you when I have time.
If you take this medicine, you will feel much better.


The conjunction “after” joins one clause to another. We use after with a present tense to talk about the future. In clause with after, we often use present perfect tense to show that one is completed (setting up the account) before another starts (changing the password).

You may change the password after you have finished setting up the account tomorrow. (Right)

To Tuna fish,
Having finished setting up the account tomorow is called Absolute construction, when disguised as a verbal for the gerund=setting up.
Now having finished,being present perfect tense, should be used.
This perfect tense a tense signifying action completed in the past(eg you have finished) or at the time spoken of setting up the account,
then you may changed the pass-word.

以下兩個都不正確, 應該係

You may change the password after you have finished setting up the account tomorrow.