I am fully aware that if there a modal in the result clause of a sentence we cannot consider it as a "zero" conditional sentence, but please look at this sentence.
If there isn't enough air, I can't breathe.
What kind of conditional sentence is this? Isn't it a FACT? Why can't we say that's a zero conditional? Just because of a modal? Is it even possible to say that sentence in any other way to be a zero conditional !?
It seems to me that any sentence which has both clauses in the present tense (like this one) is called a "zero conditional sentence". CJ
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It seems to me that any sentence which has both clauses in the present tense (like this one) is called a "zero conditional sentence".
CJ