(Yes, that title was a great example of parallelism).
Parallelism is big on the English section of the ACT. Look for similar structure in a pair or series of related words, phrases, or clauses. Here’s a great example:
What would faulty parallelism look like? Well, for example, you can’t say that Chris Brown likes to tear down dressing rooms, throwing temper tantrums, and apologizing for them later. Make sure your verb forms match!