Sentence Correction and Improvement

Sentence Correction & Improvement

Sentence Correction and Improvement tests your ability to identify an incorrect or weak expression in a sentence and replace it with a form that is grammatically correct, logically appropriate, concise, and natural.

These questions usually test:

• grammar
• usage
• word choice
• sentence structure
• idiomatic expression
• redundancy
• parallelism
• tense
• agreement
• prepositions
• modifiers

The central principle is:

The best correction must be grammatically correct and must also preserve the intended meaning.

Sentence Correction

Sentence Correction requires identifying the error in a sentence and rewriting the incorrect part correctly.

Check Subject–Verb Agreement

Incorrect:

The quality of these products are excellent. ✘

Correct:

The quality of these products is excellent. ✔

The true subject is quality, which is singular.

Another:

Incorrect:

Each of the students have submitted the form. ✘

Correct:

Each of the students has submitted the form. ✔

Check Verb Form

Incorrect:

He did not went there. ✘

Correct:

He did not go there. ✔

Rule:

did + V1

Incorrect:

She has wrote a letter. ✘

Correct:

She has written a letter. ✔

Rule:

has/have/had + V3

Check Tense

Incorrect:

I have met him yesterday. ✘

Correct:

I met him yesterday. ✔

A specific finished past-time expression such as yesterday generally requires the Simple Past.

Incorrect:

He is living here since 2020. ✘

Correct:

He has been living here since 2020. ✔

Check Pronoun Case

Incorrect:

Between you and I, this plan will fail. ✘

Correct:

Between you and me, this plan will fail. ✔

A pronoun after a preposition normally takes the objective case.

Check Articles

Incorrect:

He is engineer. ✘

Correct:

He is an engineer. ✔

A singular countable noun usually requires a determiner.

Incorrect:

She is an university student. ✘

Correct:

She is a university student. ✔

Article selection depends on sound, not spelling.

Check Prepositions

Incorrect:

He is senior than me. ✘

Correct:

He is senior to me. ✔

Incorrect:

We discussed about the problem. ✘

Correct:

We discussed the problem. ✔

Check Adjective and Adverb Usage

Incorrect:

She sings beautiful. ✘

Correct:

She sings beautifully. ✔

But:

Incorrect:

She looks beautifully today. ✘ if describing her appearance

Correct:

She looks beautiful today. ✔

Here, looks functions as a linking verb.

Check Comparison

Incorrect:

Rahul is more taller than Amit. ✘

Correct:

Rahul is taller than Amit. ✔

Avoid double comparatives.

Incorrect:

This is the most easiest question. ✘

Correct:

This is the easiest question. ✔

Check Conjunctions

Incorrect:

Although he was tired, but he continued working. ✘

Correct:

Although he was tired, he continued working. ✔

or:

He was tired, but he continued working. ✔

Incorrect:

Because he was ill, so he stayed home. ✘

Correct:

Because he was ill, he stayed home. ✔

Check Parallel Structure

Incorrect:

She enjoys reading, swimming and to dance. ✘

Correct:

She enjoys reading, swimming and dancing. ✔

Check Redundancy

Incorrect:

Return back the book. ✘

Correct:

Return the book. ✔

Return already includes the idea of back.

Another:

Incorrect:

Repeat again what you said. ✘

Correct:

Repeat what you said. ✔

Check Word Order

Incorrect:

He always is late. ✘ in the ordinary neutral pattern

Better:

He is always late. ✔

Frequency adverbs normally come after the verb be.

Check Misplaced Modifiers

Incorrect:

Walking down the road, the trees looked beautiful. ✘

This suggests that the trees were walking.

Correct:

Walking down the road, I found the trees beautiful. ✔

The introductory modifier must logically refer to the subject that follows.

Correction Should Preserve Meaning

Incorrect:

He is too strong to lift the box.

If the intended meaning is that he has sufficient strength, the sentence is logically wrong.

Correct:

He is strong enough to lift the box.

But:

The box is too heavy for him to lift.

is correct because too expresses excess.

Sentence Improvement

In a Sentence Improvement question, a part of the sentence is usually underlined or highlighted, and the candidate must choose a better replacement.

The correct option should improve the sentence in terms of:

• grammar
• clarity
• idiom
• economy
• logic
• style

Improvement by Correcting Grammar

Original:

He has been working here since five years.

Improved:

He has been working here for five years.

Reason:

for is used with a duration.

Improvement by Correcting Tense

Original:

He has completed the work yesterday.

Improved:

He completed the work yesterday.

Improvement by Correcting Agreement

Original:

Neither the teachers nor the principal are present.

Improved:

Neither the teachers nor the principal is present.

In traditional competitive-exam grammar, the verb generally agrees with the nearer subject.

Improvement by Correcting Pronoun

Original:

The teacher called Rahul and I.

Improved:

The teacher called Rahul and me.

Improvement by Removing Redundancy

Original:

The reason is because he was absent.

Better:

The reason is that he was absent.

or:

He was absent because he was ill.

Avoid unnecessary duplication in formal exam English.

Improvement by Choosing a More Natural Expression

Awkward:

He is having a car.

Better:

He has a car.

The verb have is normally stative when expressing possession.

Improvement by Correcting Idiom

Incorrect:

He is good in mathematics.

Standard expression:

He is good at mathematics.

Improvement by Correcting Comparison

Incorrect:

The climate of Guwahati is better than Delhi.

Correct:

The climate of Guwahati is better than that of Delhi.

Compare like with like:

climate ↔ climate

Improvement by Correcting Modifier Placement

Ambiguous:

She almost worked for ten hours.

This may mean she nearly worked but did not.

If the intended meaning is that the duration was nearly ten hours:

She worked for almost ten hours.

Modifier placement can change meaning.

No Improvement

Competitive examinations often include an option such as:

No improvement

Select it when the original sentence is already:

• grammatically correct
• meaningful
• idiomatic
• appropriately structured

Do not change a correct sentence merely because another version also sounds possible.

Phrase Replacement

Phrase Replacement questions require replacing a group of words with another expression that fits the sentence more accurately.

The replacement may involve:

• grammar
• idiom
• tense
• preposition
• collocation
• conciseness

Replacement Based on Tense

Original:

I am knowing him for ten years.

Replace:

am knowing him

with:

have known him

Correct sentence:

I have known him for ten years.

Replacement Based on Preposition

Original:

He insisted to pay the bill.

Replace:

to pay

with:

on paying

Correct:

He insisted on paying the bill.

Replacement Based on Verb Pattern

Original:

She suggested me to apply again.

Replace with:

She suggested that I apply again.

or:

She suggested applying again.

Replacement Based on Modal Structure

Incorrect phrase:

should to work

Correct replacement:

should work

Replacement Based on Gerund

Incorrect:

He avoided to answer the question.

Correct:

He avoided answering the question.

Replacement Based on Infinitive

Incorrect:

He decided going home.

Correct:

He decided to go home.

Replacement Based on Fixed Expression

Incorrect:

in spite his illness

Correct:

in spite of his illness

or:

despite his illness

Phrase Replacement and Meaning

A replacement must fit both grammar and context.

Example:

He turned down the proposal.

Possible replacement:

He rejected the proposal.

But replacing turned down with lowered would be incorrect in this context.

Important Phrase-Replacement Patterns

Inappropriate Usage

An inappropriate usage occurs when a word or expression may be grammatically possible in isolation but is wrong, unnatural, illogical, or unsuitable in the given context.

This is often more difficult than ordinary grammatical correction because it tests usage and meaning.

Wrong Word in Context

Incorrect:

The medicine had a good affect on him. ✘

Correct:

The medicine had a good effect on him. ✔

Generally:

• affect → verb
• effect → noun

Accept vs Except

accept = receive/agree to

except = excluding

Incorrect:

Everyone accept Rahul attended the meeting. ✘

Correct:

Everyone except Rahul attended the meeting. ✔

Advice vs Advise

advice → noun

advise → verb

Incorrect:

He gave me a useful advise. ✘

Correct:

He gave me useful advice. ✔

Incorrect:

I advice you to wait. ✘

Correct:

I advise you to wait. ✔

Principal vs Principle

principal → chief/main; also head of an institution

principle → rule or belief

Examples:

The principal addressed the students.

Honesty is an important principle.

Stationary vs Stationery

stationary = not moving

stationery = writing materials

Examples:

The vehicle remained stationary.

We purchased office stationery.

Compliment vs Complement

compliment = praise

complement = complete or enhance

Examples:

She complimented him on his speech.

The sauce complements the dish.

Lose vs Loose

lose = fail to keep

loose = not tight

Examples:

Do not lose your ticket.

This shirt is loose.

Economic vs Economical

economic = relating to economy

economical = inexpensive or avoiding waste

Examples:

The country faces economic challenges.

This car is economical to run.

Historic vs Historical

historic = important in history

historical = related to history

Examples:

It was a historic decision.

She studies historical documents.

Sensible vs Sensitive

sensible = reasonable/practical

sensitive = easily affected or responsive

Example:

It was a sensible decision.

He is sensitive to criticism.

Inappropriate Register

Some words may be grammatically correct but unsuitable for formal writing.

Informal:

The government messed up the project.

Formal:

The government mishandled the project.

Competitive-exam questions may test whether a word is appropriate to the tone and context.

Inappropriate Collocation

English words frequently occur in conventional combinations called collocations.

Correct:

• make a decision
• take a decision, common in British/Indian English
• commit a crime
• pay attention
• take responsibility
• heavy rain
• strong argument
• serious problem

Incorrect:

do a decision ✘

powerful rain ✘ in ordinary usage

Logical Inappropriateness

Example:

He whispered loudly.

The combination is contradictory unless used deliberately for stylistic effect.

Better, depending on intended meaning:

He whispered softly.

Unnecessary Intensification

Incorrect:

completely impossible to some extent

The expressions contradict one another.

Choose wording that is logically consistent.

Word Replacement

Word Replacement requires substituting an incorrect, weak, or contextually unsuitable word with the most appropriate alternative.

The replacement should preserve the intended meaning while improving accuracy.

Replace Wrong Part of Speech

Incorrect:

He spoke with great confident.

Correct:

He spoke with great confidence.

Here, a noun is required after great.

Another:

Incorrect:

She answered the question correct.

Correct:

She answered the question correctly.

An adverb is required to modify answered.

Replace Adjective with Adverb

Incorrect:

He performed poor in the examination.

Correct:

He performed poorly in the examination.

Replace Adverb with Adjective after Linking Verb

Incorrect:

The food tastes badly. ✘ if describing the food’s taste

Correct:

The food tastes bad. ✔

Replace Incorrect Comparative Form

Incorrect:

This method is more better.

Correct:

This method is better.

Replace Wrong Prepositional Word

Incorrect:

He is capable to solve the problem.

Correct:

He is capable of solving the problem.

Replace Wrong Quantifier

Incorrect:

There are much students in the hall.

Correct:

There are many students in the hall.

Replace Much/Many According to Noun

• many → plural countable
• much → uncountable

Examples:

many books

much information

Replace Less/Fewer

Traditional formal distinction:

fewer → countable plural nouns

less → uncountable nouns

Incorrect:

Less students attended the class. ✘ in traditional formal grammar

Correct:

Fewer students attended the class. ✔

Correct:

There is less water in the tank.

In modern everyday English, less is sometimes used with countable quantities, particularly measurements and numbers, but examinations often test the traditional distinction.

Replace Few/Little

Use:

few → plural countable nouns

little → uncountable nouns

Examples:

Few students attended.

Little water remained.

Replace Elder/Older

elder is mainly used for family relationships and normally before a noun.

My elder brother

older is more general and can be used predicatively.

My brother is older than I am.

Incorrect:

He is elder than me. ✘

Correct:

He is older than me. ✔

Replace Later/Latter

later = after some time

latter = second of two mentioned items

Example:

I will call you later.

Of tea and coffee, I prefer the latter.

Replace Beside/Besides

beside = next to

besides = in addition to

Example:

He sat beside me.

Besides English, he knows Hindi.

Replace Between/Among

Traditional exam rule:

between → two

among → more than two

Example:

Divide the money between the two brothers.

Distribute the sweets among the children.

Replace Each/Every

Both take singular nouns, but their meanings differ.

each emphasises individuals separately.

every considers all members of a group individually but collectively in meaning.

Examples:

Each student received a certificate.

Every student must attend.

Replace Some/Any

General pattern:

some → affirmative statements

any → negatives and questions

Examples:

I have some money.

I do not have any money.

Do you have any money?

But some is often used in offers and requests:

Would you like some tea?

Replace Say/Tell

Incorrect:

He said me the truth. ✘

Correct:

He told me the truth. ✔

or:

He said the truth, though tell the truth is the usual collocation.

Replace Speak/Talk

Both overlap, but usage differs.

Examples:

She speaks English fluently.

I talked to him yesterday.

The principal spoke to the students.

Replace Borrow/Lend

borrow = take temporarily

lend = give temporarily

Incorrect:

Can you borrow me your pen? ✘

Correct:

Can you lend me your pen? ✔

or:

Can I borrow your pen? ✔

Replace Bring/Take

bring generally means movement towards the speaker/reference point.

take generally means movement away from it.

Example:

Bring the book here.

Take this file to the office.

Replace Discover/Invent

discover → find something that already exists

invent → create something new

Example:

Scientists discovered a new species.

Alexander Graham Bell is associated with the invention of the telephone.

Replace Rob/Steal

rob + person/place

steal + thing

Correct:

They robbed the bank.

They stole the money.

Incorrect:

They robbed the money. ✘

Replace Die/Dead/Death

• die → verb
• dead → adjective
• death → noun

Incorrect:

His dead shocked everyone. ✘

Correct:

His death shocked everyone. ✔

Incorrect:

He is died. ✘

Correct:

He is dead. ✔

or:

He died. ✔

Word-Replacement Table

Common Redundant Expressions

Competitive examinations sometimes treat the following as redundant in formal usage:

Some expressions may occur naturally for emphasis in real-world English, but formal examination questions often prefer the more concise form.

Common Sentence-Improvement Traps

Pay special attention to these patterns:

Incorrect:
He is one of the best student in the class.

Correct:
He is one of the best students in the class.

Incorrect:
She is married with a doctor.

Correct:
She is married to a doctor.

Incorrect:
He is good in mathematics.

Correct:
He is good at mathematics.

Incorrect:
I prefer tea than coffee.

Correct:
I prefer tea to coffee.

Incorrect:
She prevented me to enter.

Correct:
She prevented me from entering.

Incorrect:
He insisted to go.

Correct:
He insisted on going.

Incorrect:
I look forward to meet you.

Correct:
I look forward to meeting you.

Incorrect:
No sooner had he arrived when the train left.

Correct:
No sooner had he arrived than the train left.

Incorrect:
Hardly had he arrived than it started raining.

Correct:
Hardly had he arrived when it started raining.

Incorrect:
Unless you do not study, you will fail.

Correct:
Unless you study, you will fail.

Incorrect:
He is more superior than me.

Correct:
He is superior to me.

Step-by-Step Method for Sentence Improvement

When solving a sentence-improvement question, follow this sequence:

• First, read the entire sentence for meaning.
• Identify the subject and main verb.
• Check subject–verb agreement.
• Identify the tense and time reference.
• Check the verb form after auxiliaries and modals.
• Check pronouns and their antecedents.
• Check articles and determiners.
• Check prepositions and fixed expressions.
• Check whether an adjective or adverb is required.
• Check comparison.
• Check conjunction pairs.
• Check parallel structure.
• Check for misplaced modifiers.
• Check for redundancy.
• Finally, compare all options and choose the one that is both correct and natural.

Revision Table

Key Points to Remember

• Sentence correction is not merely about finding a word that sounds better. The replacement must be grammatically and contextually correct.
• Always check the true subject before selecting the verb.
• Remember:
  • did + V1
  • modal + V1
  • has/have/had + V3
• Use:
  • since → point of time
  • for → period of time
• A specific finished past time generally takes Simple Past:
  • yesterday
  • last year
  • two days ago
• Article choice depends on sound:
  • a university
  • an hour
• After prepositions, use the objective pronoun:
  • between you and me
• Learn fixed combinations:
  • good at
  • interested in
  • married to
  • capable of
  • insist on
  • depend on
  • prevent from
  • congratulate on
  • accuse of
• Remember:
  • prefer X to Y
  • senior to
  • junior to
  • superior to
  • inferior to
• After prepositions, normally use V-ing:
  • interested in learning
  • without speaking
  • look forward to meeting
• Avoid double comparison:
  • more better ✘
  • most easiest ✘
• Compare like with like:
  • Delhi’s population is greater than Mumbai’s
  • the population of Delhi is greater than that of Mumbai
• Avoid unnecessary words:
  • return back → return
  • repeat again → repeat
• Check correlative pairs:
  • either…or
  • neither…nor
  • both…and
  • not only…but also
  • no sooner…than
  • hardly/scarcely…when
• Maintain parallel structure:
  • reading, writing and speaking
  • to read, to write and to speak
• A grammatically correct replacement can still be wrong if it changes the intended meaning.
• If the original expression is already correct, choose No Improvement when that option is provided.

A strong approach to Sentence Correction and Improvement is to combine grammar with meaning, idiomatic usage, collocation and sentence logic. Instead of examining only the underlined words, always read the complete sentence. Many difficult questions are designed so that an option appears grammatically possible in isolation but becomes incorrect when the full context is considered.