going to own vs will have owned/been owing

How can I know whether to use a verb in the Future Perfect or Future Simple Tense with "........by the time...."?

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Originally Posted by ostap77

How can I know whether to use a verb in the Future Perfect or Future Simple Tense with "........by the time...."?

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Have you read the other posts on this thread? If you have, you should at least have a clue.

"I'm going to be able to speak Polish by the time I graduate from college in Cracow." -OK?

Quote:

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Originally Posted by ostap77

"I'm going to be able to speak Polish by the time I graduate from college in Cracow." -OK?

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Yes.