My Kenyan bride has said it's bad English - 'I'm about to leave for buying some food'.
I admit that a native speaker might never say this way but I guess grammatically it is totally correct. Is it OK to say so?
According to the strict rules of grammar for each of the sentence's parts, it does not violate any "rules". but I agree with your bride that it is not correct. " After "leave" a phrase headed by "for" requires a location .
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According to the strict rules of grammar for each of the sentence's parts, it does not violate any "rules". but I agree with your bride that it is not correct. The infinitive (to buy) must be used, not the prepositional phrase "for buying."
After "leave" a phrase headed by "for" requires a location.
I'm about to leave for Paris.
I'm about to leave for the office.