Sometimes, errors in parallel structure can affect the clarity and accuracy of your writing, making sentences confusing or awkward. To spot and fix these errors, you need to look for signs such as mixing different grammatical forms, like nouns, verbs, adjectives, adverbs, or clauses. For example, "She likes to read, writing, and paint." is not parallel because it mixes a verb (to read), a gerund (writing), and a verb (paint). To make it parallel, you can use all verbs or all gerunds: "She likes to read, write, and paint." or "She likes reading, writing, and painting." Additionally, changing the word order, tense, voice, or punctuation of the elements can also create errors in parallel structure. For instance, "He not only studies hard but also is a good athlete." is not parallel because it changes the word order of the verb phrases. To make it parallel, you can use the same word order: "He studies hard and is a good athlete." or "He is not only a hard-working student but also a good athlete."