correlative conjunctions: both … and

The correlative conjunction both … and co-ordinates two or more words, phrases or clauses.

Parallelism with “both … and”

Note that the constructions following these correlatives should be parallel in structure. That is, if you use a phrase after one, you must use a phrase after the other; if you use a verb after one, you must use a verb after the other; and so on.

• Incorrect: Ann enjoyed camping both on the mountains and prairies. [one phrase and one noun]
• Correct: Ann enjoyed camping both on the mountains and on the prairies. [both phrases]

• Incorrect: Nenad liked both to cycle and jog. [one to-infinitive and one bare infinitive]
• Correct: Nenad liked both to cycle and to jog. [both to-infinitives]
• Correct: Nenad liked to both cycle and jog. [both bare infinitives]

Additional information

• Correlative conjunctions