Spotting Errors: Concepts, Formulas, and Clear Examples
Spotting-error items mark four parts (A/B/C/D) of a sentence; find the part with a mistake or choose ‘No error.’ Often one error only—grammar, spelling, or usage. Faster than full SC because boundaries are labeled.
Use partition scan: check each labeled chunk for its typical failure (A: subject, B: verb phrase, C: object/preposition, D: connector). Do not hunt multiple errors unless ‘no error’ is unlikely.
Part-wise checklist
- A: subject number, article, possessive its/it’s.
- B: verb tense, agreement, auxiliary.
- C: preposition, object form (who/whom).
- D: conjunction, punctuation logic (comma splice).
Common error types
- Redundant: ‘return back,’ ‘repeat again.’
- Wrong prep: ‘discuss about’ → discuss (transitive).
- Double negative informal vs standard.
Example — Label error
(A) Each of the boys / (B) have brought / (C) his lunch / (D) today.
Error in B: ‘Each’ → singular verb has.
Spelling and homophones
- their/there/they’re; affect/effect (verb/noun basics).
No error option
Choose ‘No error’ when all parts pass—don’t invent mistakes under time panic.
Long compound sentences
- Error may sit only in one clause—isolate clause containing labeled part.
Exam pacing
- 20–30 seconds if using checklist; mark and move.
Step-by-step method for exam questions
- Read full sentence once for meaning.
- Apply A→D checklist on labeled segments.
- Flag first definite violation.
- If none, re-scan for prep/redundancy only.
- Pick part letter or No error.
- Avoid changing correct colloquial phrases if standard in exams.
Formula cheat sheet
| Situation | Formula | When to use |
|---|---|---|
| Each/Every/Either | Singular verb | Part B |
| Discuss | No ‘about’ | Prep error |
| Its vs It's | Possessive / it is | Part A |
| Redundancy | Drop repeat morpheme | Usage |
| No error | All parts valid | Final pass clean |
Frequently asked questions
More than one error?
Standard format: single error part; if two look wrong, pick the clearest grammatical breach.
Punctuation errors?
Less common; watch comma joining two full sentences (splice).
Difference from SC?
Spotting labels one chunk; SC rewrites whole phrase.
Practice on this platform
Use 4 practice sets (10 MCQs, detailed solution after each answer) and 2 timed mocks (20 minutes) on this topic to convert formulas into speed and accuracy.