Parallel Structure
There are three sentence elements which commonly require parallel treatment:
Coordinate ideas are equal in rank. They are joined by coordinate connectives such as and, but, or nor.
The math exam tested our knowledge of exponential functions, the quadratic formula, and solving linear equations. (two nouns and a phrase)
The math exam tested our knowledge of exponential functions, the quadratic formula, and linear equations.
Water skiing no longer interests me as much as to go scuba diving. (gerund and an infinitive) Water skiing no longer interests me as much as scuba diving.
Correlative constructions are formed with the correlative conjunctions both…and, either….or, neither…nor, not only…but (also).
At the gate they tried both persuasion and to force their way in. (noun paired with infinitive)
At the gate they tried both persuasion and force.