Sentence Correction | Verb Tense, Mood, and Strategy

[dhruvmark]

Please consider the following 2 sentences:

1. If Sophie EATS pizza tomorrow, then she WILL BECOME ill.
2. If Sophie ATE pizza tomorrow, then she would become ill

My questions are:

a. How is 1 in present? even though EATS (present tense) is used, we're talking about tomorrow.

b. How are 1 and 2 different? Why does 1 have 'no uncertainty' and 2 'Unlikely case'?

Thanks.

[StaceyKoprince]

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