Grammar and Correct Usage (Professional)

Reviewer's Note: The most common error in CSE is Subject-Verb Agreement. Always identify the core subject first, especially when there are prepositional phrases between the subject and the verb.

This section tests your proficiency in standard English grammar.

Sa madaling salita: Sinusukat nito ang iyong galing sa tamang grammar.

Top Grammar Rules to Master

Understanding these core rules will help you navigate most of the questions in the Verbal Ability section.

1. Subject-Verb Agreement

The "Golden Rule": A singular subject takes a singular verb, and a plural subject takes a plural verb.

Rule: Words between the subject and verb do not affect agreement. (Ang mga salita sa pagitan ay hindi nakakaapekto.)
- Incorrect: The box of chocolates are missing.
- Correct: The box (singular) of chocolates is missing.
Rule: Compound subjects joined by "and" are usually plural.
- Correct: My brother and his friend are coming.
Rule: With "or", "nor", "either/or", "neither/nor", the verb agrees with the subject closest to it. (Mag-aagree ang verb sa pinakamalapit na subject.)
- Correct: Neither the players nor the coach is present.
- Correct: Neither the coach nor the players are present.
Rule: Indefinite pronouns like everyone, everybody, someone, somebody, anyone, anything, each are singular.
- Correct: Each of the students has a book. (Not "have")

2. Verb Tenses

Consistency is key. Do not shift tenses unnecessarily.

Simple Present: General truths or habitual actions. (The sun rises in the east.)
Simple Past: Completed actions in the past. (She walked to school yesterday.)
Present Perfect: Actions that started in the past and continue to the present. Uses has/have + past participle.
- Correct: She has lived here for ten years.
Past Perfect: Action completed before another past action. Uses had + past participle.
- Correct: By the time the police arrived, the thief had escaped.

3. Prepositions

Choosing the correct preposition can be tricky as it often depends on idioms.

In / On / At (Time):
- At: Specific times (at 5:00 PM)
- On: Days and dates (on Monday, on Christmas)
- In: Months, years, seasons (in July, in 1999, in winter)
In / On / At (Place):
- At: Specific point (at the corner, at the door)
- On: Surfaces (on the table, on the wall)
- In: Enclosed spaces (in the box, in the room)

4. Pronoun Case

Pronouns change form depending on their role in the sentence.

Subjective case: use when the pronoun is the subject.
- Correct: She answered quickly.
- Correct: Who called earlier?
Objective case: use when the pronoun is the object of a verb or preposition.
- Correct: The teacher praised him.
- Correct: The message was sent to us.
Possessive case: use when showing ownership.
- Correct: That notebook is hers.
- Correct: Their report is stronger than ours.
Quick hack: Remove the extra noun and test the pronoun alone.
- Wrong: Between you and I
- Correct: Between you and me

5. Adjectives vs. Adverbs

Many CSE items test whether a modifier should describe a noun or a verb.

Adjectives modify nouns.
- Correct: She is a careful worker.
Adverbs modify verbs, adjectives, or other adverbs.
- Correct: She works carefully.
After linking verbs like is, am, are, was, were, seem, become, use an adjective.
- Correct: The answer looks correct.
- Wrong: The answer looks correctly.
Common trap: words ending in -ly are often adverbs, but not always.

6. Comparison Forms

Comparison errors appear often in sentence correction items.

Comparative compares two things.
- Correct: This route is faster than the other one.
Superlative compares three or more.
- Correct: This is the best option among the three.
Countable nouns use fewer and many.
- Correct: There are fewer applicants today.
Uncountable nouns use less and much.
- Correct: We need less water.

7. Modifiers and Sentence Clarity

Modifiers should sit next to the word they describe.

Misplaced modifier: creates a confusing meaning.
- Wrong: She served sandwiches to the students on paper plates.
- Better: She served sandwiches on paper plates to the students.
Dangling modifier: the subject doing the action is missing.
- Wrong: After finishing the report, the files were organized.
- Correct: After finishing the report, I organized the files.
Tip: Ask, "Who is doing the action?" If the answer is unclear, the sentence is broken.

8. Parallel Structure

When ideas are joined in a list, the grammar should match.

Correct: The candidate is intelligent, confident, and hardworking.
Correct: She likes reading, writing, and editing.
Correct: The office needs to hire, train, and retain good employees.
Trap: do not mix verb forms or noun forms in the same series.

9. Pronoun Reference

Keep pronouns clear and avoid vague references.

Correct: Maria told Ana that she should submit the form early.
- This is clear only if the context makes the reference obvious.
Better: Maria told Ana, "You should submit the form early."
Tip: If a pronoun can point to more than one noun, rewrite the sentence.

10. Countable vs. Uncountable Nouns

Some grammar items depend on whether the noun can be counted one by one.

Countable: book, student, question, answer.
Uncountable: information, advice, furniture, equipment.
Correct: Much of the information is useful.
Correct: Many students joined the review session.
Correct: The office bought new furniture.

11. Common CSE Error Signals

When reviewing a sentence, check these in order:

Subject and verb agreement
Pronoun case
Verb tense consistency
Modifier placement
Parallel structure
Adjective or adverb choice
Countable versus uncountable nouns
Comparative and superlative forms

12. Quick Recall Table

Error Type	What to Check	Example
Subject-verb agreement	Subject, not nearby noun	The list of items is complete.
Pronoun case	Subject vs object position	Between you and me
Adjective/adverb	Noun vs verb description	He is careful / He works carefully
Modifier placement	Word next to what it modifies	She served sandwiches on paper plates
Parallelism	Same grammatical form	hiking, swimming, and biking
Comparison	Two vs many	faster than / the fastest

Practice Questions

Subject-Verb Agreement: "The team of players _____ practicing for the finals."
- A. is
- B. are
- C. were
- D. have
- Answer: A (is).
- Rationale: Ang subject ay "team" (collective noun na isang unit lang), kaya singular. Ang "of players" ay extra info lang.
Verb Tense: "When I arrived at the station, the train _____."
- A. leaves
- B. left
- C. has left
- Answer: D (had left).
- Rationale: Past perfect tense ang gamitin para sa action na natapos NA bago pa nangyari ang isa pang action sa past (arrived).
Prepositions: "She has been waiting _____ 8:00 AM."
- A. for
- B. since
- C. in
- D. at
- Answer: B (since).
- Rationale: "Since" ang gamitin kapag may simula ng oras (starting point).
Pronouns: "Between you and _____, I think he is lying."
- A. I
- B. me
- C. mine
- D. myself
- Answer: B (me).
- Rationale: "Between" ay preposition, kaya dapat objective case ("me") ang kasunod, hindi "I".
Subject-Verb Agreement: "Each of the employees _____ given a bonus."
- A. was
- B. were
- C. have been
- D. are
- Answer: A (was).
- Rationale: Ang "Each" ay laging singular.
Correct Usage: "The reason he was late is _____ his car broke down."
- A. because
- B. due to
- C. that
- D. for
- Answer: C (that).
- Rationale: Ang tamang construction ay "The reason is... that...". Mali ang "The reason is because" (redundant).
Misplaced Modifier: Choose the sentence with the correct modifier placement:
- A. I only ate breakfast today.
- B. I ate only breakfast today.
- C. Today, I ate breakfast only.
- D. I ate breakfast today only.
- Answer: B (I ate only breakfast today).
- Rationale: Ang "Only" ay dapat katabi ng salitang minomodify nito (breakfast). Kung "I only ate...", ibig sabihin kumain ka lang (hindi ka uminom, hindi ka natulog).
Pronoun Case: "The manager selected two people for the project, Maria and _____."
- A. I
- B. me
- C. myself
- D. mine
- Answer: B (me).
- Rationale: Object ng verb na "selected" kaya "me".
Verb Tense Consistency: "She started the project yesterday and _____ on it all day."
- A. works
- B. will work
- C. worked
- D. has worked
- Answer: C (worked).
- Rationale: Dapat pareho ang tense. "Started" (past) kaya "worked" (past) din.
Prepositions: "The committee will deliberate _____ the proposal tomorrow."
- A. on
- B. about
- C. over
- D. (no preposition)
- Answer: D (no preposition).
- Rationale: Ang "deliberate" ay hindi na kailangan ng preposition. Direct object na agad ang kasunod.
Subject-Verb Agreement: "Neither the director nor the actors _____ satisfied with the performance."
- A. is
- B. was
- C. were
- D. has been
- Answer: C (were).
- Rationale: Sa "neither/nor", sundin ang subject na mas malapit sa verb ("actors" -> plural).
Correct Usage (Less vs. Fewer): "There are _____ people in the room today than yesterday."
- A. less
- B. fewer
- C. little
- D. lesser
- Answer: B (fewer).
- Rationale: "Fewer" para sa nabibilang (people). "Less" para sa hindi nabibilang.
Pronoun-Antecedent Agreement: "Every employee must submit _____ report by Friday."
- A. his or her
- B. their
- C. its
- D. our
- Answer: A (his or her).
- Rationale: "Every employee" ay singular. Sa formal writing, "his or her" ang gamit. (Pero tanggap na rin ang "their" sa modern usage).
Verb Mood (Subjunctive): "I wish I _____ richer."
- A. am
- B. was
- C. were
- D. would be
- Answer: C (were).
- Rationale: Sa "wish" o hypothetical, "were" ang gamitin.
Parallel Structure: "He enjoys hiking, swimming, and _____."
- A. to bike
- B. biking
- C. to go biking
- D. bike
- Answer: B (biking).
- Rationale: Dapat pare-pareho ang form (parallel). Lahat ay -ing form (hiking, swimming). Kaya "biking".
Prepositions: "She is very good _____ convincing people."
- A. in
- B. on
- C. at
- D. with
- Answer: C (at).
- Rationale: Ang tamang idiom ay "good at".
Dangling Modifier: "After finishing the report, _____."
- A. the computer was turned off.
- B. it was time for a break.
- C. I took a short break.
- D. the lights were switched off.
- Answer: C (I took a short break.)
- Rationale: Sino ang tumapos ng report? Dapat ang kasunod na subject ay yung gumawa ng action ("I").
Subject-Verb Agreement: "The news from the capital _____ not good."
- A. are
- B. were
- C. is
- D. have been
- Answer: C (is).
- Rationale: "News" ay singular.
Pronouns: "The person _____ is responsible for this should be held accountable."
- A. who
- B. whom
- C. which
- D. whose
- Answer: A (who).
- Rationale: Subject ng "is responsible" kaya "who".
Correct Usage (Affect vs. Effect): "The new law will _____ the economy."
- A. affect
- B. effect
- C. have an affect on
- D. have an effected
- Answer: A (affect).
- Rationale: "Affect" (verb) = to influence. "Effect" (noun) = result.
Pronoun Case: "The panel asked Maria and _____ to stay after the briefing."
- A. I
- B. me
- C. mine
- D. myself
- Answer: B (me).
- Rationale: Object of the verb "asked" kaya objective case.
Adjective vs. Adverb: "The witness answered the questions _____."
- A. clear
- B. clearly
- C. clearness
- D. clearer
- Answer: B (clearly).
- Rationale: The verb "answered" needs an adverb.
Adjective After Linking Verb: "The report appears _____."
- A. complete
- B. completely
- C. completion
- D. completing
- Answer: A (complete).
- Rationale: After "appears" use an adjective, not an adverb.
Parallel Structure: "The clerk was responsible for filing documents, answering calls, and _____ supplies."
- A. ordering
- B. order
- C. to order
- D. ordered
- Answer: A (ordering).
- Rationale: Parallel sa gerund form: filing, answering, ordering.
Comparison: "This option is _____ than the other two."
- A. good
- B. better
- C. best
- D. more better
- Answer: B (better).
- Rationale: Two items only, so comparative form.
Countable vs. Uncountable: "There is _____ evidence to support the claim."
- A. many
- B. fewer
- C. much
- D. several
- Answer: C (much).
- Rationale: "Evidence" is uncountable.
Pronoun Reference: "When Ana met Bea, she handed _____ the folder."
- A. her
- B. she
- C. hers
- D. herself
- Answer: A (her).
- Rationale: The object form is needed; in context, the reference should stay clear.
Dangling Modifier: "After reviewing the memo, _____."
- A. the printer was turned off.
- B. the meeting started late.
- C. I sent my comments.
- D. the lights were dimmed.
- Answer: C (I sent my comments).
- Rationale: The subject after the comma must be the one doing the reviewing.
Subject-Verb Agreement: "The collection of old letters _____ in the archive room."
- A. are kept
- B. were kept
- C. is kept
- D. have kept
- Answer: C (is kept).
- Rationale: The subject is "collection," not "letters."
Adverb Choice: "She spoke so _____ that everyone understood her immediately."
- A. clear
- B. clearly
- C. clearer
- D. clearest
- Answer: B (clearly).
- Rationale: The verb "spoke" needs an adverb.