Question

1. I read comic books, eating some snacks.

2. I read comic books while /as I ate some snacks.

3. I read comic books and ate some snacks.

4. I read comic books and ate some snacks at the same time.
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Are they all the same and grammatical?
Does #3 mean #1 without adding 'at the same time' at the end?

Answer 1

Is "read" in these sentences intended to be the past tense? (pronounced "red")

Answer 2

Yes. It's the past tense.

Answer 3

All the sentences are fine. They'd be better if you added "Last night" or some other phrase that indicates past tense.