Fourth Grade English: Correlative Conjunctions (Either/Or, Neither/Nor)

Some words in the English language are inseparable partners; they always travel in pairs to connect balanced, grammatically parallel ideas. These partnered connectors are called correlative conjunctions. Whether presenting two exciting possibilities with either/or, ruling out alternatives with neither/nor, or connecting dual achievements with not only/but also, correlative conjunctions bring symmetry, rhythm, and precision to your writing.

The Paired Nature of Correlative Conjunctions

Correlative conjunctions work in tandem to join grammatically equal elements.

+-----------------------------------------------------------------------+
|                    CORRELATIVE CONJUNCTION PAIRS                      |
+-----------------------------------------------------------------------+
|  Pair               | Meaning / Function                              |
+---------------------+-------------------------------------------------+
|  either ... or      | Presents a choice between two alternatives      |
|  neither ... nor    | Negates both alternatives (not this, not that)  |
|  both ... and       | Emphasizes inclusion of both elements           |
|  not only ... but   | Emphasizes an additional, often surprising fact |
|     also            |                                                 |
|  whether ... or     | Expresses doubt or choice between possibilities |
+-----------------------------------------------------------------------+

Either ... Or: Presenting Choices

"Either ... or" offers two distinct options, stating that one or the other will take place:
- "Either Marcus will pitch, or David will take the mound."

- "You may choose either the chocolate frozen yogurt or the strawberry cup."


Neither ... Nor: Denying Both Options

"Neither ... nor" is the negative counterpart to either/or, stating that neither option is true:
- "Neither the rain nor the wind could dampen our enthusiasm."

- "The lost traveler had neither food nor water."


Both ... And: Joining Two Elements

"Both ... and" highlights that two qualities, actions, or individuals are equally involved:
- "Both the cheetah and the peregrine falcon possess astonishing speed."


Not Only ... But Also: Adding Emphasis

"Not only ... but also" connects two positive facts while placing dramatic emphasis on the second one:
- "Elena is not only an accomplished pianist, but also an outstanding mathematician."


The Law of Parallel Structure

The most crucial rule when using correlative conjunctions is parallel structure: the grammatical element following the first conjunction must match the grammatical element following the second conjunction.

+-----------------------------------------------------------------------+
|                       PARALLEL STRUCTURE TEST                         |
+-----------------------------------------------------------------------+
| NON-PARALLEL (Unbalanced):                                            |
|   "Elena likes both [to swim] and [running]."                         |
|   (Infinitive vs. Gerund - Mismatched!)                               |
|                                                                       |
| PARALLEL (Balanced):                                                  |
|   "Elena likes both [to swim] and [to run]."   (Both infinitives!)    |
|   "Elena likes both [swimming] and [running]." (Both gerunds!)        |
+-----------------------------------------------------------------------+

Balancing Nouns, Verbs, and Phrases

If a noun follows "either," a noun must follow "or":
- Correct: "We will visit either Paris or London." (Noun matches noun).
If a prepositional phrase follows "not only," a prepositional phrase must follow "but also":
- Correct: "The treasure was hidden not only beneath the floorboards, but also behind the stone fireplace." (Prepositional phrase matches prepositional phrase).


Subject-Verb Agreement with Either/Or and Neither/Nor

When correlative conjunctions connect compound subjects, the verb agrees with the subject closest to it.

+-----------------------------------------------------------------+
|                 CORRELATIVE AGREEMENT PROXIMITY                 |
+-----------------------------------------------------------------+
| Sentence Model                              | Correct Verb Form |
+---------------------------------------------+-------------------+
| Neither the coach nor the players ARE happy.| Plural (players)  |
| Neither the players nor the coach IS happy. | Singular (coach)  |
| Either the boys or Maya BRINGS the soccer   | Singular (Maya)   |
|   ball.                                     |                   |
| Either Maya or the boys BRING the soccer    | Plural (boys)     |
|   ball.                                     |                   |
+---------------------------------------------+-------------------+

Practice Exercises

Practice Questions

  1. Fill in the matching correlative partner: "Neither the captain ______ the crew feared the stormy seas."
  2. Fill in the matching correlative partner: "The museum exhibit is not only educational, ______ fascinating."
  3. Choose the correct verb: "Either the twin brothers or Lucas (is / are) responsible for cleaning the art room."
  4. Choose the correct verb: "Neither the teacher nor the students (was / were) aware of the schedule change."
  5. Rewrite this sentence to fix the faulty parallel structure: "Marcus wants either to play soccer or reading a mystery book."

Answer Key and Explanations

  1. "nor" (The matching partner for "neither" is always "nor").
  2. "but also" (The partner for "not only" is "but also").
  3. Correct verb: "is." When subjects are joined by "either ... or," the verb agrees with the closer subject ("Lucas," which is singular).
  4. Correct verb: "were." The subject closest to the verb is the plural noun "students."
  5. Corrected sentence: "Marcus wants either to play soccer or to read a mystery book" (or "either soccer or a mystery book").