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This is the first in what I hope will be many student-question inspired posts. Allyson from Philadelphia was wondering whether “nor” had to be paired with “neither” or whether it could be used on its own. The answer was far more complex than expected, so here it is. If you have an idea for a GMAT grammar blog post, or just have a question that you want answered, email me at emadan@manhattanprep.com.

To begin, you’ll need to understand the essentials of parallelism. You can get in-depth coverage of parallelism in our Sentence Correction Strategy Guide, but here are the basics. Two (or more) things in a list have to be both structural and logically parallel. Let’s start with the positive form: either/or. Read more