Spotting Errors

🟢 Lite — Quick Review (1h–1d)

Rapid summary for last-minute revision before your ECAT exam.

Spotting errors questions test your ability to identify grammatical, structural, and stylistic faults in sentences. In the ECAT English paper, these questions typically present a sentence with four underlined parts (A, B, C, D) — one of which contains an error. Your task is to identify the incorrect portion.

Systematic Approach to Error Spotting:

1. Read the full sentence once without marking anything
2. Identify the subject and verb — check agreement
3. Check each underlined part individually
4. Look for: agreement errors, wrong tense/form, incorrect word choice, punctuation errors, parallelism violations, dangling modifiers
5. The error is the underlined portion that violates standard English grammar

Common Error Types — What to Look For:

Error Type	Example	Correction
Subject-verb disagreement	”The committee have decided."	"The committee has decided.”
Wrong tense	”I have saw the results."	"I have seen the results.”
Wrong principal part	”The experiment worked good."	"The experiment worked well.”
Wrong preposition	”different than"	"different from”
Parallelism	”She likes hiking and to swim."	"She likes hiking and swimming.”
Modifier error	”Walking to class, the book fell."	"Walking to class, I dropped the book.”
Pronoun error	”Everyone must bring their book."	"Everyone must bring his or her book.”
Superlative error	”She is more better."	"She is better.”
Double negative	”I don’t need no help."	"I don’t need any help.”

⚡ ECAT exam tips:

• If you can’t spot the error immediately, compare each underlined part to what standard English requires
• Watch for “each” and “every” — they are always singular: “Each student has submitted his assignment.”
• “Neither…nor” and “either…or” — the verb agrees with the nearer noun: “Neither the students nor the teacher was present.” / “Neither the teacher nor the students were present.”
• “More than one” takes a singular verb despite the plural meaning: “More than one experiment has failed.”

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🟡 Standard — Regular Study (2d–2mo)

For ECAT students who want genuine understanding of error spotting.

Error Type 1 — Agreement Errors:

Collective nouns take singular verbs when the group acts as one unit (British English often uses plural):

• “The team is playing well this season.” (singular — team as unit)
• “The team are wearing different coloured shirts.” (plural — individuals acting separately)

Quantifiers with special agreement:

• “All of the water is gone.” (uncountable → singular)
• “All of the students have arrived.” (countable plural → plural)
• “None of the money has been spent.” / “None of the students have arrived.” (both acceptable — “none” is ambiguous)
• “A number of students are waiting.” (plural verb — “a number of” is plural)
• “The number of students is increasing.” (singular — “the number” refers to the count)

Error Type 2 — Verb Form and Tense Errors:

• “She has gone to the lab yesterday.” (present perfect with past time marker — WRONG) → “She went to the lab yesterday.”
• “If I was you, I would reconsider.” (subjunctive — WRONG) → “If I were you, I would reconsider.”
• “I enjoyed to read the report.” (gerund after enjoy — WRONG) → “I enjoyed reading the report.”
• “Let him and I go.” (wrong pronoun case — WRONG) → “Let him and me go.”
• “The results were quite good, is it not?” (tag question — WRONG) → “The results were quite good, weren’t they?”

Error Type 3 — Word Choice / Usage Errors:

Commonly confused pairs:

• advice (noun) / advise (verb): “I advise you to take my advice.”
• affect (verb: to influence) / effect (noun: result): “The new policy affected our work. The effect was significant.”
• alternate (verb; or adjective meaning every other) / alternative (noun/adjective: choice, other option): “We alternated between work and rest.” / “We considered an alternative approach.”
• anxious (worried) / eager (looking forward to): “I am anxious about the results” (not “anxious to know”).
• among (three or more) / between (two): “between you and me” (two people) / “among the three candidates” (three or more)
• bring (here) / take (away from here): “Take these papers to the office.”
• complement (completes) / compliment (praises): “The new data complements our findings.”
• continuous (uninterrupted) / continual (repeated): “continual interruptions” / “continuous flow”
• infer (to deduce) / imply (to suggest): The speaker implied; the listener inferred.
• principal (main / head) / principle (fundamental rule)
• that (defining/restrictive) / which (non-defining — needs comma): “The book that I lost” (defines which book) / “The book, which I lost yesterday” (additional information)

Error Type 4 — Parallelism Errors:

Items connected by conjunctions must be grammatically parallel:

• “The procedure is simple, efficient, and to save time.” → “The procedure is simple, efficient, and time-saving.”
• “She likes swimming, to run, and cycling.” → “She likes swimming, running, and cycling.”
• “It is both a chemical reaction and physically observable.” → “It is both a chemical reaction and a physical phenomenon.”

With correlatives (both…and, either…or, neither…nor, not…but):

• “He is neither a physicist nor chemist.” → “He is neither a physicist nor a chemist.”
• “We must either reduce costs or increase revenue.” (both verb phrases — correct)

Error Type 5 — Modifier Errors:

Dangling modifiers: Incorrect: “After completing the experiment, the lab was cleaned.” Correct: “After completing the experiment, we cleaned the lab.” / “The experiment was completed, and the lab was cleaned.”

Misplaced modifiers (the word they modify should be nearby): Incorrect: “He almost sold all the tickets.” (suggests he almost did something, not sold all) Correct: “He sold almost all the tickets.”

Squinting modifiers (unclear whether they modify what comes before or after): Incorrect: “Running quickly the clock struck midnight.” (does quickly modify running or striking?) Better: “The clock struck midnight while he was running quickly.”

Error Type 6 — Pronoun Errors:

• “Everyone must take their seats.” → traditionally WRONG (everyone is singular); use “his or her” or rephrase. However, “their” as singular is increasingly accepted in modern English — ECAT may accept either, but conservative usage is preferred.
• “It is I.” (predicate nominative — “It is me” is informal but widely accepted; “It is I” is formal/prescriptive)
• “Who did you see?” (not “Whom did you see?” in informal; “Whom” is the object form)

⚡ Common student mistakes:

1. Assuming the first underlined part is always wrong — the error could be anywhere
2. Missing parallelism in longer sentences with multiple conjunctions
3. Confusing “which” and “that” — especially in ECAT where this distinction is frequently tested
4. Forgetting that collective nouns take singular verbs in formal English

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🔴 Extended — Deep Study (3mo+)

Comprehensive coverage for ECAT mastery of error detection with detailed grammatical analysis.

The Subjunctive — One of the Most Tested Areas:

The subjunctive mood is frequently tested in ECAT error-spotting questions. The subjunctive uses the base form of the verb (without -s in third person) in specific contexts:

After verbs of demanding, suggesting, recommending, insisting, requesting, proposing, advising:

• “I suggest that he take the exam again.” (not “takes”)
• “The doctor recommended that she rest for a week.” (not “rests”)
• “The committee moved that the report be accepted.” (not “is accepted”)
• “It is essential that everyone be on time.” (not “is”)

In “if” clauses for unreal conditions:

• “If I were taller, I would apply.” (not “was”)
• “If there were more funding, we could proceed.” (not “was”)

In “as if” / “as though” clauses:

• “He behaves as if he were the boss.” (not “was”)
• “She speaks as though she knew everything.” (not “knew” — past subjunctive same as past simple here)

After “wish”:

• “I wish I were more patient.” (present wish — unreal)
• “I wish I had studied harder.” (past wish — contrary to fact)

Error Spotting in Complex Sentences:

In complex sentences, check each clause independently: “The data, along with the analysis, suggest that the experiment were a success.” Error: “were” should be “was” — “the data suggest” (plural verb with compound subject using “along with”) and “the experiment was a success” (not subjunctive here — it’s a statement of fact, not a demand).

Gerund vs. Infinitive — Tricky Distinctions:

Verb + Gerund	Verb + Infinitive
admit (to)	afford
avoid	agree
consider	ask
deny	decide
discuss (never infinitive)	demand
enjoy	expect
finish	hope
imagine	learn
keep	manage
mind (in questions)	offer
miss	plan
postpone	prefer
recall	pretend
risk	promise
suggest	refuse
understand (never infinitive)	want

Verbs that can take both with different meanings:

• “stop to smoke” (pause in order to smoke — new purpose) vs. “stop smoking” (cease the habit)
• “remember to lock” (future action) vs. “remember locking” (past memory)
• “try to open” (attempt) vs. “try opening” (experiment)
• “go on to explain” (move to a new topic) vs. “go on explaining” (continue the same)

Punctuation as Error Source:

• Comma splice: two independent clauses joined only by a comma. “The experiment worked, it produced results.” → add conjunction or semicolon, or make two sentences.
• Run-on sentence: no punctuation between two independent clauses. “The engine runs well it uses fuel efficiently.”
• Missing comma with non-defining relative clause: “My brother who lives in Karachi is visiting.” (defining — no comma needed) vs. “My brother, who lives in Karachi, is visiting.” (non-defining — commas required).

Number and Agreement in Detail:

Singular nouns that look plural but take singular verbs:

• Physics is an interesting subject. (not “are”)
• The news is good. (not “are”)
• Mathematics requires concentration. (not “require”)
• The United Nations was founded in 1945. (singular entity)
• measles / mumps / economics (singular in formal English)

Plural nouns that take singular verbs:

• “Ten miles is a long distance to walk.” (considered a unit)
• “Two hours is enough time.”

ECAT Previous Year Patterns:

• Subject-verb agreement: extremely common
• Wrong tense or verb form: very frequent
• Word choice / confusion of similar words: common
• Parallelism errors: periodic
• Pronoun-antecedent agreement: common
• The subjunctive (were, be + base): frequently tested

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