Topic Explanation and Use
Core idea
These paired forms only work well when both sides match.
Correlative pairs such as both ... and, either ... or, and neither ... nor connect two matching choices. The structure works best when both parts of the pair are parallel.
Use these pairs when you want to add, limit, or balance options clearly. The reader should be able to predict the second half once the first half begins.
At B1 level, build one correct base sentence first, then add detail without breaking grammar control.
Use it here
- Keep the grammar parallel on both sides of the pair.
- Make sure the verb agrees with the real subject in either/or and neither/nor patterns.
- Use the pair only when you are linking two similar sentence parts.
Watch it work
Remember this
- Choose the correct pair: both ... and, either ... or, or neither ... nor.
- Keep the grammar parallel on both sides of the pair.
- Check the verb agreement after either/or or neither/nor.
- Make sure the pair links two similar sentence parts.
- Read the whole sentence to confirm that the balance feels natural.
Real-World Examples with Both, Either, Neither
Example 1
Too weakBoth the teacher and the students was ready on time.
BetterBoth the teacher and the students were ready on time.
This correction matches the intended meaning and keeps Both, Either, Neither natural.
Example 2
Too weakEither the library or the classrooms is open this evening.
BetterEither the library or the classrooms are open this evening.
This version sounds more natural because Both, Either, Neither fits the sentence clearly.
Common Errors with Both, Either, Neither
Common problem 1
breaking parallel structure or agreement in a correlative pair
WeakBoth the teacher and the students was ready on time.
StrongBoth the teacher and the students were ready on time.
Fix: keep the pair parallel and match the verb to the real subject near it when needed
Common problem 2
breaking the pair with unmatched grammar
WeakBoth to revise grammar and vocabulary practice are useful.
StrongBoth revising grammar and practising vocabulary are useful.
Fix: keep both sides of the pair in the same grammar shape
Common problem 3
using a singular verb with a plural nearer subject
WeakNeither the principal nor the teachers was happy with the change.
StrongNeither the principal nor the teachers were happy with the change.
Fix: check the nearer subject in neither/nor patterns
Interactive Practice Lab
Practice
First notice the right form. Then build it yourself. Then fix it in a full sentence.
Score: 0/4
Read for meaning first. If the meaning changes, the grammar usually has to change too.
1. Quick pick
Choose the stronger sentence for Both, Either, Neither.
2. Build it
Put this Both, Either, Neither sentence in the correct order.
Tap a chunk to move it down. Tap it again to send it back.
3. Type the fix
Rewrite the sentence so Both, Either, Neither is correct.
Fix this: Either the tutor or the students is presenting first.
4. Final sort
Mark each sentence as correct or needing a fix.
Neither the buses nor the train service was reliable today.
Neither the buses nor the train service were reliable today.
Both the manager and the staff approved the plan.
Both the manager and approved the plan the staff.
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