Chapter 13
Gerund, Infinitive & Verb Forms
Verbs that demand a gerund (enjoy, avoid, suggest) vs verbs that demand an infinitive (decide, hope, agree). Bare infinitive after 'make' and 'let'.
Full Chapter Notes
Source · FPSC Trap Decoder · CSS MPT Smart Notes (2026 Edition)
13.1 Context
Within the structural framework of the CSS MCQ-Based Preliminary Test (MPT), Gerunds, Infinitives, and Verb Forms operate as a precision-filtering mechanism. The Federal Public Service Commission (FPSC) does not test theoretical definitions; it tests Verb Pattern Recognition.
This chapter functions on a mathematical rule:
The first verb determines the form of the second verb.
Candidates who rely on colloquial instinct or literal Urdu translation frequently default to the infinitive ("to + verb") as a universal solution. The FPSC exploits this weakness systematically.
Mastery requires recognizing:
- Fixed verb patterns
- Prepositional anchors
- Causative structures
- Meaning-shift verbs
- Parallel structural consistency
13.2 Frequency & Dominance Analysis
- Exam Weightage: 3–4% of the English portion
- MCQ Volume: approximately 2–3 questions per paper
- Primary Testing Zones: Sentence Correction · Fill-in-the-Blank · Structural Error Detection
This unit carries binary scoring logic: you either recognize the trigger verb — or you lose the mark.
Recent trend analysis shows increasing emphasis on:
- Parallel gerund structures
- Preposition + gerund enforcement
- Causative verb traps
- Meaning-shift distinctions
13.3 Core Structural Logic
13.3.1 The Trigger Verb Anchor
The form of the second verb is dictated entirely by the first verb.
- Gerund (-ing) → activity already ongoing or general preference
- Infinitive (to + V1) → intention, purpose, forward-looking action
- Bare Infinitive (V1) → causative structures
13.3.2 Fixed Verb + Gerund Patterns
These verbs are structurally locked to the -ing form.
| Trigger Verb | Correct Pattern | Example |
|---|---|---|
| Enjoy | enjoy reading | He enjoys reading biographies. |
| Avoid | avoid wasting | Avoid making careless errors. |
| Suggest | suggest hiring | She suggested hiring a consultant. |
| Mind | mind waiting | Would you mind closing the door? |
| Admit / Deny | deny leaking | He denied leaking the document. |
Using "to + verb" after these verbs is a guaranteed structural failure. (Validated via Wren & Martin Sec 260; Murphy Unit 53.)
13.3.3 Fixed Verb + Infinitive Patterns
These verbs require to + base verb.
| Trigger Verb | Correct Pattern | Example |
|---|---|---|
| Decide | decide to leave | The board decided to postpone. |
| Hope | hope to succeed | We hope to qualify. |
| Want | want to learn | She wants to improve. |
| Refuse | refuse to sign | They refused to cooperate. |
| Fail | fail to understand | He failed to follow instructions. |
(Validated via Wren & Martin Sec 255; Murphy Unit 55.)
13.3.4 Meaning-Shift Verbs (High-Level Trap Zone)
Both forms are grammatically correct — but meaning changes entirely.
Stop
- Gerund: Stop smoking → Quit the habit
- Infinitive: Stop to smoke → Pause in order to smoke
Remember / Forget
- Gerund: Remember locking → Memory of past action
- Infinitive: Remember to lock → Duty to perform
Try
- Gerund: Try restarting → Experiment
- Infinitive: Try to lift → Make effort
This is one of the most sophisticated FPSC traps. (Murphy Unit 56.)
13.3.5 Parallel Structure (High-Yield Zone)
The FPSC increasingly embeds verb-form errors inside lists. If two items are gerunds, the third must also be a gerund.
Incorrect: She enjoys reading, writing, and to paint. Correct: She enjoys reading, writing, and painting.
Parallel disruption is frequently tested in corporate sentences, policy statements, and academic-tone MCQs. Structural inconsistency = automatic elimination.
13.3.6 Causative Verbs (The Bare Infinitive Trap)
Make / Let require the Bare Infinitive (no "to").
Incorrect: He made me to cry. Correct: He made me cry.
Help can take either a bare infinitive or a to-infinitive — both acceptable in British English. (Validated via Wren & Martin Sec 255; Murphy Unit 55.)
13.3.7 Gerund After Prepositions (Non-Negotiable Rule)
Any verb immediately following a preposition must be a gerund.
- Afraid of swimming
- Interested in learning
- Good at solving
- Look forward to meeting
In "look forward to," to is a preposition, not an infinitive marker. The verb that follows must take -ing. (Murphy Unit 60.)
13.4 Structural Testing Zones
The FPSC hides errors in:
- Prepositional phrases
- Long corporate-style sentences
- Policy statements
- Parallel noun–verb lists
- Causative constructions
- "To" ambiguity traps
13.5 Examiner Trap Patterns
| Trap Type | Structural Error | Neutralization Strategy |
|---|---|---|
| Gerund/Infinitive Confusion | Enjoy to read | Identify trigger verb → enforce -ing |
| Causative "to" Trap | Made him to confess | Delete "to" after make/let |
| Preposition + Base | Afraid of swim | Force -ing after preposition |
| Meaning-Shift Trap | Stop to smoke (wrong context) | Check logical meaning |
| Parallelism Disruption | Reading, writing, to paint | Maintain structural symmetry |
| Urdu-Translation Error | Thinking to buy | Replace with thinking of buying |
13.6 Applied Exam-Level Examples
Most candidates avoid ___ difficult constitutional debates. (A) to discuss (B) discussing (C) discuss (D) for discussing
"Avoid" is a gerund-trigger verb. (A) is the ear-based distractor. Correct: B.
The director made the interns ___ the final draft before submission. (A) to revise (B) revise (C) revising (D) for revising
"Made" = causative → bare infinitive required. Correct: B.
She clearly remembers ___ the gate before leaving. (A) to lock (B) locking (C) lock (D) to locking
Past memory → gerund required. Correct: B.
The company values innovation, teamwork, and ___ strategic risks. (A) to take (B) taking (C) take (D) taken
Parallel noun list → gerund required. Correct: B.
13.7 Condensed Recap Table
| Rule Zone | Structural Trigger | Correct Form |
|---|---|---|
| Fixed Preferences | Enjoy / Avoid / Suggest | Gerund (-ing) |
| Intentions | Decide / Hope / Plan | To + Verb |
| Causatives | Make / Let | Bare Verb |
| Prepositions | Of / In / About / To (prep) | Gerund |
| Parallel Lists | Gerund + Gerund + ___ | Gerund |
| Meaning-Shift | Stop / Remember / Try | Context decides |
13.8 Final Structural Principle
In the CSS MPT, this chapter is not about grammar theory. It is about recognizing structural triggers instantly.
- Enjoy → scan for -ing
- Make → delete "to"
- Preposition → enforce -ing
- Stop → check meaning
- Series of verbs → maintain parallelism
If you think emotionally, you will choose the infinitive.
13.9 Practice MCQs
Section I — Gerund, Infinitive & Verb Forms Drill (Q1–50)
Identify the trigger verb or preposition and select the correctly patterned second verb.
Most senior officers in the department enjoy ___ historical biographies in their spare time.
Show explanation
'Enjoy' is a fixed pattern verb that must be followed by a gerund (-ing). 'To read' is a classic ear-trap distractor.
Trap: Fixed Pattern Trap
To ensure security, the administrator suggested ___ the password every month.
Show explanation
'Suggest' is mathematically paired with the gerund form. Using the infinitive is a common FPSC error.
Trap: Fixed Pattern Trap
The candidate tried to avoid ___ the direct questions posed by the interview board.
Show explanation
'Avoid' describes staying away from an action already existing or envisioned as a thing, requiring a gerund.
Trap: Fixed Pattern Trap
Would you mind ___ a few minutes while the Director finishes the meeting?
Show explanation
'Mind' (meaning to object) requires a gerund. Frequently tested in polite requests.
Trap: Fixed Pattern Trap
The investigation team has finally finished ___ the financial records of the firm.
Show explanation
'Finish' marks the completion of an activity, which must be expressed as a gerund.
Trap: Fixed Pattern Trap
He denied ___ any classified information to the unauthorized personnel.
Show explanation
'Deny' refers to rejecting a fact or past action, which requires a gerund.
Trap: Fixed Pattern Trap
The committee decided ___ the meeting until further notice.
Show explanation
'Decide' refers to a plan or future intention, which is mathematically paired with the 'to-infinitive'.
Trap: Fixed Pattern Trap
She hopes ___ the CSS competitive examination in her very first attempt.
Show explanation
'Hope' expresses a desire for a future result and always takes an infinitive.
Trap: Fixed Pattern Trap
The management refused ___ the demands of the protesting employees.
Show explanation
'Refuse' refers to rejecting a future act and points forward, requiring 'to + verb'.
Trap: Fixed Pattern Trap
Can you afford ___ such a large sum of money on a luxury vehicle?
Show explanation
'Afford' refers to the possibility of a future action, requiring an infinitive.
Trap: Fixed Pattern Trap
The witness failed ___ the suspect during the identification parade.
Show explanation
'Fail' means an expected future action did not happen; it always takes an infinitive.
Trap: Fixed Pattern Trap
He promised ___ the borrowed documents before the end of the week.
Show explanation
'Promise' indicates a commitment to a future act, which requires the infinitive form.
Trap: Fixed Pattern Trap
We expect the Prime Minister ___ the new housing project tomorrow.
Show explanation
'Expect' expresses anticipation of a future result and takes the infinitive pattern.
Trap: Fixed Pattern Trap
The teacher made the students ___ the entire essay three times.
Show explanation
'Make' (when active) requires a Bare Infinitive (no 'to'). Option A is a high-frequency FPSC trap.
Trap: Causative Trap
Please let the assistant ___ the files to the secretariat.
Show explanation
'Let' indicates permission and must be followed by a bare infinitive. 'To carry' is grammatically incorrect here.
Trap: Causative Trap
The supervisor helped the intern ___ the complex statistical software.
Show explanation
'Help' is unique; in British English, it can take either a bare infinitive or a to-infinitive without changing the meaning.
Trap: Balanced Usage
He went to Islamabad ___ the high-level diplomatic summit.
Show explanation
'To attend' explains why he went (his purpose). Using 'for attend' is a common Urdu-thinking translation error.
Trap: Purpose Trap
She is exceptionally good at ___ complex mathematical equations.
Show explanation
Any verb following a preposition (at) must be in the gerund (-ing) form. 'To solve' is a trap.
Trap: Prepositional Gerund Trap
He succeeded in ___ the most difficult section of the screening test.
Show explanation
'Succeed in' is a verb-preposition structure that requires the gerund form 'passing'.
Trap: Prepositional Gerund Trap
The students are looking forward to ___ the national museum next week.
Show explanation
In 'look forward to,' the word 'to' is a preposition, not part of an infinitive. It must be followed by a gerund.
Trap: The 'To' Preposition Trap
He was accused of ___ the official seals of the department.
Show explanation
The adjective-preposition phrase 'accused of' must be followed by a gerund.
Trap: Prepositional Gerund Trap
I cannot imagine him ___ the position of such a high responsibility.
Show explanation
'Imagine' can be followed by an object and a gerund to describe a visualized state.
Trap: Fixed Pattern Trap
The government is considering ___ the tax rates in the next fiscal year.
Show explanation
'Consider' is a fixed pattern verb requiring the -ing form. 'To reduce' sounds formal but is incorrect.
Trap: Fixed Pattern Trap
He risked ___ his entire career by taking such a controversial stand.
Show explanation
'Risk' denotes the danger of an action, which must be expressed as a gerund.
Trap: Fixed Pattern Trap
The Director has decided to postpone ___ the final merit list.
Show explanation
'Postpone' (delay an action) requires the gerund form.
Trap: Fixed Pattern Trap
She stopped ___ when she saw the Director entering the hall.
Show explanation
'Stop talking' means ending the activity of speech. 'Stop to talk' would mean pausing another activity to start talking.
Trap: Meaning-Shift Trap
On his way to the office, he stopped ___ some medicine for his father.
Show explanation
'Stop to buy' indicates purpose (pausing his journey in order to buy medicine).
Trap: Meaning-Shift Trap
I clearly remember ___ the door before I left the house.
Show explanation
'Remember locking' refers to a memory of a past event. 'Remember to lock' would refer to a future duty.
Trap: Meaning-Shift Trap
Please remember ___ the lights before you leave the laboratory.
Show explanation
'Remember to switch off' refers to a future duty or obligation.
Trap: Meaning-Shift Trap
He forgot ___ the letter yesterday, so it is still lying on his desk.
Show explanation
'Forgot to post' means the action was never performed (failure to perform a duty).
Trap: Meaning-Shift Trap
I will never forget ___ the beautiful sunrise in the northern areas.
Show explanation
'Forget seeing' refers to the loss of a past memory. The action happened, but the memory might fade.
Trap: Meaning-Shift Trap
I regret ___ you that your application has been rejected.
Show explanation
'Regret to inform' is a formal fixed expression used when announcing bad news.
Trap: Meaning-Shift Trap
He now regrets ___ so much time on unproductive activities.
Show explanation
'Regret wasting' expresses sorrow or feeling bad about an action already done in the past.
Trap: Meaning-Shift Trap
If your computer is slow, you should try ___ the operating system.
Show explanation
'Try reinstalling' means experimenting with a method to see if it solves the problem.
Trap: Meaning-Shift Trap
I tried ___ the heavy box, but it was far beyond my strength.
Show explanation
'Try to lift' means making an effort or an attempt to do something difficult.
Trap: Meaning-Shift Trap
The police prevented the protestors from ___ the high-security zone.
Show explanation
'Prevented from' must be followed by a gerund. This is a common FPSC error detection target.
Trap: Prepositional Gerund Trap
He is afraid of ___ in the deep waters of the Arabian Sea.
Show explanation
The adjective-preposition pair 'afraid of' requires the -ing form.
Trap: Prepositional Gerund Trap
She insisted on ___ the truth during the departmental inquiry.
Show explanation
'Insist on' emphasizes an action and requires a gerund.
Trap: Prepositional Gerund Trap
I am thinking of ___ a new laptop for my research work.
Show explanation
'Thinking of' is a fixed pattern requiring a gerund. 'Thinking to buy' is a common error.
Trap: Prepositional Gerund Trap
He apologized for ___ late to the critical cabinet meeting.
Show explanation
'Apologize for' must be followed by a gerund.
Trap: Prepositional Gerund Trap
The witness was forced ___ the statement against the accused.
Show explanation
Unlike the causative 'make,' the verb 'force' requires a 'to-infinitive'.
Trap: Causative vs Forced Trap
There is no point in ___ over the past mistakes.
Show explanation
'There is no point in' is a fixed idiomatic expression followed by -ing.
Trap: Fixed Pattern Trap
The children were busy ___ noise in the absence of the teacher.
Show explanation
'Busy' describes involvement in an ongoing activity and takes a gerund.
Trap: Fixed Pattern Trap
He pretended ___ ill to avoid the rigorous physical training.
Show explanation
'Pretend' describes an intentional false state and points toward the state itself, requiring an infinitive.
Trap: Fixed Pattern Trap
I look forward to ___ your reply as soon as possible.
Show explanation
As in Q20, 'look forward to' requires the gerund 'receiving' because 'to' is a preposition.
Trap: The 'To' Preposition Trap
She managed ___ the difficult task within the given timeframe.
Show explanation
'Manage' implies effort leading to success in a future or intended act, taking an infinitive.
Trap: Fixed Pattern Trap
Identify the correct sentence regarding verb patterns.
Show explanation
Identifies the specific pattern error for 'avoid,' which must take -ing.
Trap: Sentence Correction Trap
Identify the correct causative construction.
Show explanation
Identifies the 'to' redundancy error after the causative verb 'made'.
Trap: Sentence Correction Trap
He successively avoided ___ the same mistake twice.
Show explanation
'Avoid' is the trigger verb scan target for the -ing form.
Trap: Trigger Verb Scan
I suggest ___ the help of a professional consultant.
Show explanation
'Suggest' is a topper-level distractor verb because candidates instinctively want to use 'to seek'.
Trap: Fixed Pattern Trap
Answer Key with Trap Analysis
Gerund, Infinitive & Verb Forms — Answer Key (Q1–50)
| Q | Correct | Type | Primary Trap | Why Others Fail |
|---|