SSC English Error Spotting and Sentence Improvement: Rules and Tricks

Most aspirants lose marks in error spotting not because they do not know grammar, but because they read the sentence the way they speak it. Spoken English forgives a lot. The exam does not. A sentence that "sounds fine" is often the one with the mistake, and a sentence that sounds odd is sometimes perfectly correct.

This guide gives you a rule-based way to attack these questions. For each area you get the rule, the exceptions that trap people, a quick check you can run in a few seconds, and worked examples written for this post. There are more than 50 examples, each with the correct form and the reason.

What these questions actually test

In error spotting, a sentence is split into parts, and you pick the part that contains the mistake (or choose the "no error" option when it is offered). In sentence improvement, one part is highlighted and you pick the best replacement, or keep it as it is. Both test the same small set of rules, so one preparation covers both.

The English section of SSC CGL Tier 1 has been 25 questions in recent years, and grammar-based items make up a large share of it. How many error-spotting and improvement questions appear changes from shift to shift and from exam to exam (SSC CGL, CHSL, MTS, RRB NTPC, IBPS, SBI), so check the latest notification and the last two or three years of papers for the current pattern. What does not change is the list of rules below.

Two points about answers. First, the examiner wants standard written English, so informal usage that people accept in speech is not your guide. Second, in a sentence-improvement question, do not choose a different option just because it looks smarter. If the original is correct, "no improvement" is the right answer.

How to attack a question in 30 seconds

Use the same order every time. A fixed order stops you from wandering around the sentence.

1. Seconds 0 to 5: find the real subject and verb. Mentally cross out phrases beginning with of, in, with, along with, as well as. What remains is the subject. Check that the verb agrees with it.
2. Seconds 5 to 12: check tense. Look for time markers (since, for, yesterday, ago, last year, by the time, when, if). Each one points to a tense.
3. Seconds 12 to 20: check the small words. Articles, prepositions and pronouns cause a large share of errors, and they hide in the short parts.
4. Seconds 20 to 26: check structure. Look for comparisons (than, more, most), pairs (not only... but also, neither... nor), a participle at the start of the sentence, and lists.
5. Seconds 26 to 30: decide. If you found nothing and a no-error option exists, mark it. If two parts look wrong, re-check the one with the strongest rule behind it, usually the verb.

If a question is not yielding in 30 seconds, mark it and move on. A skipped question costs nothing; a guess in a paper with negative marking can. Check the notification for the exact negative marking of your exam.

Rule set 1: Subject-verb agreement

The rule. The verb agrees with its true subject, not with the noun closest to it. Singular subject, singular verb; plural subject, plural verb.

Key sub-rules and exceptions.

• Phrases starting with "with", "along with", "as well as", "together with" do not change the verb. It follows the first subject.
• With "either... or", "neither... nor" and "not only... but also", the verb agrees with the subject nearer to it.
• Each, every, either, neither, one of, and everyone take a singular verb.
• "The number of" takes a singular verb. "A number of" takes a plural verb.
• Collective nouns (committee, team, jury) take a singular verb when the group acts as one unit. Police, people, cattle and staff (in the sense of members) are always used with plural verbs.
• News, mathematics, physics, economics and measles look plural but take singular verbs. Scissors, trousers, spectacles and pliers take plural verbs; "a pair of trousers" takes a singular verb.
• Amounts of money, time and distance, when treated as one quantity, take a singular verb: "Five thousand rupees is a fair price."
• Exception inside the exception: "one of those who" takes a plural verb, because "who" refers to the plural group.

Quick check. Cross out everything between the subject and the verb, then read the bare pair aloud: "list... is", "quality... is".

Worked examples.

• Error: "The list of selected candidates are displayed on the notice board." Correct: "The list of selected candidates is displayed on the notice board." Reason: the subject is "list", singular; "candidates" is inside the "of" phrase.
• Error: "Neither the manager nor the clerks was present." Correct: "Neither the manager nor the clerks were present." Reason: with neither... nor the verb agrees with the nearer subject, "clerks", which is plural.
• Error: "The teacher, along with her students, have gone on a trip." Correct: "The teacher, along with her students, has gone on a trip." Reason: "along with" does not add to the subject; the subject is "teacher".
• Error: "The number of vacancies have increased this year." Correct: "The number of vacancies has increased this year." Reason: "the number" is singular. Compare "A number of candidates have applied", which is correct because "a number of" means "many".
• Error: "The police has arrested the suspect." Correct: "The police have arrested the suspect." Reason: "police" is always plural in standard usage.
• Error: "She is one of the candidates who has cleared every stage." Correct: "She is one of the candidates who have cleared every stage." Reason: "who" refers to "candidates", plural, so "have".
• Error: "Mathematics are my weakest subject." Correct: "Mathematics is my weakest subject." Reason: the name of a subject of study is singular.

Rule set 2: Tenses

The rule. The tense must match the time words and the logic of the sentence.

Key sub-rules and exceptions.

• "Since" (a point in time) and "for" (a period) with a continuing action need the present perfect or present perfect continuous: "has lived since 2015", "has been working for three years".
• A definite past time (yesterday, last week, in 2019, two days ago) needs the simple past, never the present perfect.
• In clauses of time and condition (when, before, after, until, as soon as, if) about the future, use the simple present, not "will".
• "Hardly... when" and "no sooner... than" take the past perfect in the first part: "Hardly had he sat down when the bell rang."
• Stative verbs (know, believe, like, want, own, belong, understand) are normally not used in the continuous form. Exceptions exist when the meaning changes: "I am seeing the doctor tomorrow", "She is being rude today".
• A universal truth stays in the simple present even in reported speech: "The teacher said that the earth revolves around the sun."

Quick check. Underline the time word first, then ask which tense it demands. Only after that look at the verb.

Worked examples.

• Error: "I am living in this city since 2015." Correct: "I have been living in this city since 2015." Reason: "since" with a continuing action needs the present perfect continuous.
• Error: "She has left for Delhi yesterday." Correct: "She left for Delhi yesterday." Reason: "yesterday" is a finished time, so simple past.
• Error: "I will call you when I will reach home." Correct: "I will call you when I reach home." Reason: no "will" in a future time clause.
• Error: "Hardly he had entered the room than the lights went out." Correct: "Hardly had he entered the room when the lights went out." Reason: inversion after "hardly", and "hardly" pairs with "when". Note that "no sooner" pairs with "than".
• Error: "I am knowing the answer to this question." Correct: "I know the answer to this question." Reason: "know" is a stative verb.
• Error: "The teacher said that the earth revolved around the sun." Correct: "The teacher said that the earth revolves around the sun." Reason: a universal truth does not shift back in tense.

Rule set 3: Articles

The rule. Use "a" or "an" for a single, non-specific countable noun, and "the" for a specific or unique one. The choice between "a" and "an" depends on the sound of the next word, not its spelling.

Key sub-rules and exceptions.

• "A" before consonant sounds: a university, a European, a one-rupee coin, a unit. "An" before vowel sounds: an hour, an honest man, an MBA, an FIR.
• Use "the" before superlatives, ordinals, rivers, seas, mountain ranges, newspapers and holy books: the Ganga, the Himalayas, the Hindu, the Gita.
• No article before languages, sports, most meals, most countries and cities, and abstract nouns used in a general sense: Hindi, cricket, breakfast, India, honesty.
• Exceptions: the United States, the Netherlands; a meal can take "the" when it is specific ("The breakfast at the hotel was cold").
• Uncountable nouns (information, advice, furniture, luggage, equipment, knowledge, news, progress) never take "a" or "an" and have no plural form.
• Repeating the article shows two different persons or things: "The secretary and the treasurer" is two people; "The secretary and treasurer" is one person with two roles.

Quick check. Say the next word aloud and listen for the first sound. For the article "the", ask: is there only one, or has the listener been told which one?

Worked examples.

• Error: "He is an university topper." Correct: "He is a university topper." Reason: "university" begins with the sound "yoo", a consonant sound.
• Error: "She waited for a hour." Correct: "She waited for an hour." Reason: the "h" in "hour" is silent, so the word starts with a vowel sound.
• Error: "Rohit plays the cricket every evening." Correct: "Rohit plays cricket every evening." Reason: no article before the name of a sport.
• Error: "Can you give me an advice on this?" Correct: "Can you give me some advice on this?" Reason: "advice" is uncountable; "a piece of advice" is also correct.
• Error: "Mount Everest is highest peak in the world." Correct: "Mount Everest is the highest peak in the world." Reason: "the" is needed before a superlative.

Rule set 4: Prepositions

The rule. Many verbs, adjectives and nouns take a fixed preposition. You cannot work these out by logic; you must learn them as pairs. Time and place prepositions follow patterns.

Patterns and exceptions.

• Time: "at" for clock time (at 5 pm), "on" for days and dates (on Monday, on 15 August), "in" for months, years and parts of the day (in July, in 2024, in the evening).
• "By" marks a deadline ("Submit it by Friday"); "until" or "till" marks continuation ("Wait until Friday").
• "Between" for two, "among" for three or more. Exception: "between" can be used for three or more when the items are considered individually ("a treaty between the three countries").
• Verbs that take no preposition: discuss, reach, enter, marry, resemble, order, request, attend, approach. Exception: "enter into" an agreement or a discussion.
• Adjective pairs: senior, junior, superior, inferior, prior, preferable take "to" (not "than"). Prefer X to Y. Different from. Angry with a person, angry at a thing. Good at, fond of, aware of, capable of, keen on, interested in, married to, ashamed of.
• Verbs: congratulate on, accuse of, blame for, insist on, depend on, comply with, look forward to (followed by an -ing form), agree to a proposal, agree with a person.

Quick check. Say the pair as a unit ("prefer to", "discuss, nothing") and match it against your memory list. Keep a notebook of every preposition pair you meet in mocks.

Worked examples.

• Error: "He is senior than me in the office." Correct: "He is senior to me in the office." Reason: senior takes "to".
• Error: "We discussed about the new budget." Correct: "We discussed the new budget." Reason: "discuss" takes a direct object.
• Error: "She is looking forward to meet you." Correct: "She is looking forward to meeting you." Reason: here "to" is a preposition, so the -ing form follows.
• Error: "The two sisters divided the sweets among themselves." Correct: "The two sisters divided the sweets between themselves." Reason: two people, so "between".
• Error: "The interview is scheduled on 10 am." Correct: "The interview is scheduled at 10 am." Reason: clock time takes "at".
• Error: "I congratulate you for your success." Correct: "I congratulate you on your success." Reason: congratulate takes "on".
• Error: "I prefer tea than coffee." Correct: "I prefer tea to coffee." Reason: prefer takes "to", never "than".
• Error: "She is married with a doctor." Correct: "She is married to a doctor." Reason: married takes "to".

Rule set 5: Pronouns

The rule. A pronoun must have the right case (subject or object), the right number, and a clear person it refers to.

Key sub-rules and exceptions.

• After a preposition, use the object form: between you and me, for him and her. Never "between you and I".
• After "than" and "as", complete the sentence in your head to pick the case: "She is taller than he (is)", "I like him more than (I like) her".
• "Who" is the subject form, "whom" the object form. Watch for interrupting words like "I think" or "they say": they do not change the case. "The boy who I think is honest" is correct, because "who" is the subject of "is".
• Reflexive pronouns (myself, himself) are used only when the doer and receiver are the same person, or for emphasis. They cannot replace "me" as a plain object.
• After superlatives, "all", "only", "the same" and "the very", the relative pronoun is "that", not "which".
• "Each other" for two, "one another" for more than two. This distinction is often relaxed in modern usage, but exam keys can still reward it, so follow it if the options make it clear.
• "One... one's" is the formal pair: "One should respect one's elders."

Quick check. Remove the other person from a pair ("between you and I" becomes "between I", which is clearly wrong), or replace the pronoun with he/him: if "him" fits, use whom.

Worked examples.

• Error: "Between you and I, the paper was easy." Correct: "Between you and me, the paper was easy." Reason: "between" is a preposition, so the object form "me" is needed.
• Error: "Kavita scored more than him in the test." Correct: "Kavita scored more than he did in the test." Reason: "than he did" is the full form; the pronoun is the subject of the hidden verb.
• Error: "The candidate whom I thought was best did not appear." Correct: "The candidate who I thought was best did not appear." Reason: "who" is the subject of "was best"; "I thought" is only an interruption.
• Error: "Please send the form to Ravi or myself." Correct: "Please send the form to Ravi or me." Reason: "myself" cannot be a simple object when the doer is someone else.
• Error: "This is the most interesting novel which I have read." Correct: "This is the most interesting novel that I have read." Reason: after a superlative, use "that".

Rule set 6: Adjectives and adverbs

The rule. Adjectives describe nouns; adverbs describe verbs, adjectives or other adverbs. After linking verbs (be, seem, look, feel, taste, smell, sound, become, grow) use an adjective.

Key sub-rules and exceptions.

• "The soup tastes good", not "tastes well". But with an action verb, use the adverb: "She sings well."
• Never double a comparison or superlative: not "more better", "most smartest".
• When you compare a member with its own group, add "other": "She is taller than any other girl in the class."
• For two items use the comparative with "the": "Of the two brothers, Amit is the more sensible." For three or more, use the superlative.
• "Fewer" goes with countable nouns (fewer candidates), "less" with uncountable (less time). Exception: expressions of measure treated as a unit, such as "less than 50 kilometres".
• Some adverbs have two forms with different meanings: hard (with effort) and hardly (almost not); late (not on time) and lately (recently); near and nearly; high and highly.
• Absolute adjectives (unique, perfect, complete, empty) are not normally compared with "more" or "most".
• Few, a few; little, a little: "few" and "little" have a negative sense (almost none), while "a few" and "a little" are positive (some).

Quick check. Ask "what is being described?" If it is a noun or the subject after a linking verb, the word must be an adjective; if it is an action, an adverb.

Worked examples.

• Error: "This medicine tastes bitterly." Correct: "This medicine tastes bitter." Reason: "taste" is a linking verb here, so an adjective follows.
• Error: "Rohan is the most smartest boy in the class." Correct: "Rohan is the smartest boy in the class." Reason: "most" and "-est" together make a double superlative.
• Error: "Ria is more intelligent than any student in her class." Correct: "Ria is more intelligent than any other student in her class." Reason: Ria herself is a student, so she must be excluded from the comparison.
• Error: "There were less candidates this year." Correct: "There were fewer candidates this year." Reason: candidates can be counted.
• Error: "He worked hardly to clear the exam." Correct: "He worked hard to clear the exam." Reason: "hardly" means "almost not"; "hard" is the adverb of effort.
• Error: "Amit is the most sensible of the two brothers." Correct: "Amit is the more sensible of the two brothers." Reason: two persons call for the comparative.

Rule set 7: Conditionals, wishes and "lest"

The rule. Each conditional has a fixed tense pattern. "Would" does not belong in the "if" clause.

• Zero: if + present, present (If you heat ice, it melts).
• First (real future): if + simple present, will/can/may + base verb.
• Second (unreal present): if + simple past, would + base verb. In formal English, use "were" for all persons: "If I were you".
• Third (unreal past): if + past perfect, would have + past participle.
• Mixed: "If she had studied law, she would be a lawyer now."

Exceptions and extras.

• "Unless" already means "if not", so the verb after it is positive: "Unless you practise, you will not improve."
• "Wish" and "as if/as though" about an unreal situation take the past form (were for all persons), or the past perfect for unreal past: "I wish I had listened."
• Inverted conditionals drop "if": "Had I known, I would have called" (third), "Were I you, I would wait" (second), "Should you need help, call me" (first).
• "Lest" has a negative sense, so no "not" follows: "lest he should fail".
• "It is time/high time" takes the past form: "It is high time we left."

Quick check. Look at the "if" clause first. Its tense tells you which conditional it is, and the result clause must match.

Worked examples.

• Error: "If I would have known the answer, I would have told you." Correct: "If I had known the answer, I would have told you." Reason: third conditional uses the past perfect in the "if" clause.
• Error: "Unless you do not practise daily, you will not improve." Correct: "Unless you practise daily, you will not improve." Reason: "unless" already carries the negative.
• Error: "I wish I was taller." Correct: "I wish I were taller." Reason: an unreal wish takes "were" for every person in standard exam usage.
• Error: "If it rains tomorrow, the match would be cancelled." Correct: "If it rains tomorrow, the match will be cancelled." Reason: a real future possibility is first conditional.
• Error: "He ran fast lest he should not miss the train." Correct: "He ran fast lest he should miss the train." Reason: "lest" already means "for fear that", so no "not".
• Error: "It is high time you start preparing." Correct: "It is high time you started preparing." Reason: "high time" is followed by the past form.

Rule set 8: Parallelism

The rule. Items joined by "and", "or", "but", or placed in a list or a correlative pair must have the same grammatical form: all -ing forms, all infinitives, all nouns, or all clauses.

Key sub-rules and exceptions.

• Correlatives (both... and, either... or, neither... nor, not only... but also, whether... or) must be followed by the same kind of word or phrase on both sides.
• When you compare two things, compare like with like: "The climate of Kerala is warmer than that of Punjab", not "than Punjab".
• In a list of infinitives, "to" can be written once: "to read, write and speak" is fine. Mixing "to read, writing and speak" is not.

Quick check. Read the items in a list one under another. If one of them looks different in shape (an -ing form among nouns), that is the error.

Worked examples.

• Error: "She likes singing, to dance and painting." Correct: "She likes singing, dancing and painting." Reason: all three items should be -ing forms.
• Error: "He not only teaches Maths but also Physics." Correct: "He teaches not only Maths but also Physics." Reason: "not only" and "but also" must come before the same kind of word (here, two subjects).
• Error: "The population of India is larger than China." Correct: "The population of India is larger than that of China." Reason: a population must be compared with a population, not a country.
• Error: "The new manager is efficient, polite and with great honesty." Correct: "The new manager is efficient, polite and honest." Reason: three adjectives, not two adjectives and a phrase.

Rule set 9: Modifiers

The rule. A modifier must sit next to the word it modifies. An opening participle phrase (Walking home..., Having finished...) must be followed by the person who did that action.

Key sub-rules and exceptions.

• A dangling participle has no logical doer in the main clause. The fix is to name the doer right after the comma, or to rewrite the opening as a clause.
• Words like "only", "almost" and "just" go immediately before the word they limit. "Almost all" is correct, "all almost" is not what you mean.
• Exception: an absolute phrase has its own subject, so it is not dangling: "The sun having set, we went home."

Quick check. Ask "who did the action in the opening phrase?" If the first noun after the comma is not that person, the sentence is wrong.

Worked examples.

• Error: "Opening the door, a cold wind hit her face." Correct: "Opening the door, she felt a cold wind on her face." Reason: the wind did not open the door.
• Error: "Having reached the station late, the train had already left." Correct: "Having reached the station late, we found that the train had already left." Reason: the person who reached must be the subject of the main clause.
• Error: "The teacher gave books to the students with colourful covers." Correct: "The teacher gave the students books with colourful covers." Reason: the covers belong to the books, so "with colourful covers" must follow "books".
• Error: "She almost spent all her salary on books." Correct: "She spent almost all her salary on books." Reason: "almost" limits "all", so it must stand next to it.

Rule set 10: Common confusables and fixed patterns

The rule. Some words look or sound alike but carry different meanings, and some conjunction pairs must be used together exactly.

• Affect (verb: to influence) and effect (noun: result; verb: to bring about). Principal (head, main) and principle (rule). Stationary (not moving) and stationery (writing material). Complement (complete) and compliment (praise). Lose (verb) and loose (not tight).
• Lay (put something down; lay, laid, laid) needs an object; lie (recline; lie, lay, lain) does not. Lying is the -ing form of lie.
• Borrow (take) and lend (give); bring (towards the speaker) and take (away).
• "Although/though" is not used with "but", while "although... yet" is acceptable. "Despite" and "in spite of" mean the same, but "despite of" is wrong.
• "No sooner... than", "hardly/scarcely... when". "Such... that", "so... that". "Too... to" has a negative sense.
• "Used to" (past habit) takes the base verb: "I used to walk." "Be used to" (accustomed) takes -ing: "I am used to walking."

Quick check. Make a pair sheet and test yourself weekly. For conjunctions, say the two halves together: "no sooner... than" should feel like one word.

Worked examples.

• Error: "The new rule will effect all employees." Correct: "The new rule will affect all employees." Reason: the verb meaning "to influence" is "affect".
• Error: "He is the principle of our college." Correct: "He is the principal of our college." Reason: "principal" means head of an institution.
• Error: "Although he was tired, but he continued working." Correct: "Although he was tired, he continued working." Reason: "although" and "but" should not appear together.
• Error: "Despite of the heavy rain, the match continued." Correct: "Despite the heavy rain, the match continued." Reason: "despite" is not followed by "of"; "in spite of" is the alternative.
• Error: "She is used to get up early." Correct: "She is used to getting up early." Reason: "be used to" means "accustomed to" and takes an -ing form.
• Error: "The old clothes were laying on the floor." Correct: "The old clothes were lying on the floor." Reason: the clothes are resting, and no one is placing them, so "lie" is needed.
• Error: "May I lend your pen for a minute?" Correct: "May I borrow your pen for a minute?" Reason: the speaker wants to take it, not give it.
• Error: "No sooner had the bell rung when the students left." Correct: "No sooner had the bell rung than the students left." Reason: "no sooner" pairs with "than".

Common traps

• The noun-next-to-the-verb trap. The word just before the verb is often not its subject. Always find the head noun.
• "Sounds right" bias. Many wrong forms are common in speech. Use the rule, not the ear.
• Over-correcting. Not every sentence has an error. If you cannot name the rule that is broken, consider "no error" or "no improvement".
• Changing the meaning. In sentence improvement, the right option fixes the error without altering what the sentence says.
• Second error in the option. A replacement may fix one problem and create another, such as a wrong tense. Check the full sentence with your option in place.
• Treating exceptions as rules. "Police have" and "news is" are exceptions to the "ends in s" instinct. Learn them in a short list and revise it often.

A 4-week revision plan

This is a planning suggestion, not a fixed formula. Adjust the pace to your exam date. Aim for 45 to 60 minutes a day.

• Week 1: Rule sets 1 to 3. Subject-verb agreement, tenses, articles. Write the rules in your own words on one page. Do 15 to 20 questions a day on these topics only.
• Week 2: Rule sets 4 to 6. Prepositions, pronouns, adjectives and adverbs. Start a preposition-pair notebook and add at least 5 new pairs every day.
• Week 3: Rule sets 7 to 10. Conditionals, parallelism, modifiers, confusables. Spend the last two days of the week revising weeks 1 and 2.
• Week 4: Mixed practice under time. Take mixed sets of 20 questions in 12 to 15 minutes, then a full English section from a mock test. After each set, tag every wrong answer with the rule behind it.

The most valuable habit is the error log. For every mistake, write the sentence, the rule and one fresh example of your own. Revise the log every Sunday. After two or three weeks, you will see that most of your mistakes come from only two or three rules, and those are the ones to drill.

FAQs

How many error-spotting and sentence-improvement questions come in SSC exams? It varies from year to year and from exam to exam. Check the latest notification for the English section pattern and look at the last two or three papers of your target exam.

Is the "no error" option always the answer when I cannot find a mistake? No. Treat it as an answer like any other. Mark it only after you have run the full 30-second check and found nothing.

Should I learn all grammar rules before practising? No. Learn one rule set, practise it for a few days, and then move on. Questions teach you the exceptions faster than a rule book does.

Are error spotting and sentence improvement the same in bank exams? The rules are the same, but bank exams often present them in a different format, such as a sentence split into parts or a highlighted phrase. Check the format in the latest paper.

Which rule set should I do first? Start with subject-verb agreement and tenses. They are checked in almost every sentence and give the quickest gain.

Can I use "their" with "everyone" in the exam? It is widely accepted in modern speech, but exam keys have traditionally treated "everyone" and "each" as singular. If there is a cleaner option in the choices, take it.

How do I remember prepositions? Learn them in pairs and in full phrases ("prefer tea to coffee"), never as single words. Add every new pair to a notebook and revise it weekly.

What if two options both look correct in sentence improvement? Look for the one that fits the tense and the meaning of the rest of the sentence, then check for a small difference such as an article or a preposition.

Final word

Error spotting rewards a fixed method more than raw knowledge. Learn the ten rule sets, run the same checks in the same order, and keep an error log. To test the method under real exam pressure, practise with full-length mocks and sectional English tests on Pareeksha, and review each wrong answer against the rule behind it.