Yes, the sentence "At the fair, not only can I eat tasty food, but I can also see awesome fireworks" demonstrates parallel structure. Parallel structure means using the same grammatical structure for similar ideas or items within a sentence or series of sentences. In this case, the parallel structure is shown by using the same construction "can + verb" for both "eat tasty food" and "see awesome fireworks." This helps to create balance and clarity in the sentence.
