They both mean "Can you/I eat?" So can they be used interchangeably?

I know that the て-form is used when speaking a command to someone so is it a
more direct(?) form of asking a question? Like asking a question to someone
who is superior to you?
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2011-11-04T17:17:16.273
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2011-12-27T04:47:00.367
2011-12-27T04:47:00.367
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question
grammar
What is the difference between 「食べるいいですか」 and 「食べていいですか」
The difference is that the former is ungrammatical, the latter is grammatical.
They cannot be used interchangeably.
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2011-11-04T17:24:47.713
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2011-11-04T17:24:47.713
3643
answer