Gerunds After Prepositions (Why We Use -ing After 'For', 'In', 'About')
Grammar Rule in 30 Seconds
In English, whenever a verb follows a preposition, it must almost always take the gerund (-ing) form.
- Use -ing after simple prepositions like 'in', 'on', 'at', 'for', 'from'. Example: 'I'm good at cooking.'
- Use -ing after phrasal verbs ending in prepositions. Example: 'He gave up smoking.'
- Use -ing after 'to' when 'to' is a preposition, not an infinitive marker. Example: 'I look forward to meeting you.'
Overview
Use '-ing' on an action after words like 'in' or 'for'.
The action becomes like a name. Say 'interested in learning'.
This helps you speak better. Your English will be clear.
Use '-ing' after for, in, about, with, before, and after.
How This Grammar Works
She excels at solving complex problems.(solvingis the gerund, the noun-like object of the prepositionat).We spent the evening talking about planning our next trip.(planningis the gerund, the noun-like object of the prepositionabout).He apologized for arriving late.(arrivingis the gerund, the noun-like object of the prepositionfor).
Formation Pattern
for | wait | waiting | Apologies for waiting so long. |
in | believe | believing | I believe in trying your best. |
about | worry | worrying | There's no point in worrying now. |
with | assist | assisting | He assisted with organizing the event. |
before | eat | eating | Wash your hands before eating. |
after | finish | finishing | Let's relax after finishing the report. |
by | practice| practicing| You learn by practicing regularly. |
without | hesitate| hesitating| She answered without hesitating. |
of | dream | dreaming | He often dreams of flying. |
on | insist | insisting | They insisted on arriving early. |
at | look | looking | I am good at looking for things. |
When To Use It
- Expressing Purpose or Reason (often with
for): When a preposition explains why something is done or its intended use. This knife is excellent for cutting vegetables.Thank you for inviting me to the party.- Describing a Method or Means (with
by): To indicate how an action is performed or achieved. You can improve your English by reading diverse materials.He opened the stubborn jar by hitting it on the counter.- Indicating Sequence or Time (with
before/after): To establish the temporal relationship between two actions. Before starting the exam, read all instructions carefully.She felt much better after speaking to her friend.- Discussing Feelings, Opinions, or Thoughts (with
about,of,in): When articulating emotional states or mental processes related to an action. I'm excited about visiting the new museum.What are your thoughts about expanding the business?Are you capable of finishing this by tomorrow?- Expressing Prevention or Prohibition (with
from): To show that something is being stopped or hindered. The severe weather prevented us from travelling further.His poor health keeps him from participating in sports.- Denoting a Lack or Absence (with
without): To describe an action not performed or a condition not met. It's hard to learn a language without making mistakes.He managed to build the furniture without reading the instructions.- Following Adjective + Preposition Combinations: Many adjectives are consistently paired with specific prepositions, which then demand a gerund if an action follows. These are often called fixed prepositions.
good at | She's good at remembering names. |bad at | I'm bad at multitasking. |interested in | Are you interested in collaborating on this? |tired of | I'm tired of dealing with constant complaints. |worried about | He's worried about losing his job. |fond of | My aunt is fond of collecting antique stamps. |accustomed to | We're accustomed to working late. |responsible for | Who is responsible for organizing the event? |keen on | She's keen on learning new skills. |- Following Verb + Preposition Combinations (Phrasal Verbs/Prepositional Verbs): Similar to adjectives, many verbs combine with prepositions to form idiomatic expressions that require a gerund.
apologize for | He apologized for arriving late. |approve of | Do you approve of taking shortcuts? |believe in | She believes in giving everyone a second chance. |dream of | I dream of traveling the world. |insist on | They insisted on paying the bill. |look forward to | We look forward to seeing you soon. |object to | Many residents object to building a new highway. |succeed in | She succeeded in launching her own business. |talk about | Let's talk about organizing the next event. |think about | I'm thinking about buying a new car. |give up | Don't give up trying to improve. |to-Infinitive (to + base verb): Here,tois intrinsically linked to the verb to form a single grammatical unit, an infinitive. Infinitives often express purpose, intention, or function as noun or adjective complements.I want to learn English.(to learnis an infinitive, the object ofwant.)She went to the library to study for her exams.(to studyexpresses purpose.)It's important to listen carefully.(to listenis a complement toimportant.)
toas a Preposition (to + gerund): Here,tois a true preposition, functioning as part of a fixed phrasal verb, an adjective-preposition phrase, or an idiom. In these cases, it must be followed by a gerund.I'm looking forward to seeing you.(The fixed expression islook forward to, wheretois a preposition. Thus,seeingis a gerund.)He is dedicated to teaching disadvantaged students.(dedicated tois an adjective-preposition phrase.teachingis a gerund.)She is accustomed to working long hours.(accustomed tois an adjective-preposition phrase.workingis a gerund.)They objected to increasing the fees.(object tois a verb-preposition combination.increasingis a gerund.)
- 1Check for a Fixed Expression: The most reliable method is to learn common expressions where
toacts as a preposition. These often include verbs likelook forward to,object to,admit to,confess to, or adjective phrases likeaccustomed to,dedicated to,used to(in the sense of being familiar with, not past habit). In these instances,tois inseparable from the preceding word(s) and functions prepositionally. - 2Substitution Test: Try replacing
towith another preposition likefororabout. If the sentence still makes logical sense (even if the meaning changes slightly),tois likely functioning as a preposition. If it becomes grammatically illogical, it’s part of an infinitive.
I'm looking forward to seeing you.(Compare:I'm looking forward for seeing you.– sounds odd, butforis a preposition. This suggeststois also a preposition here.)I want to learn English.(Compare:I want for learn English.– grammatically incorrect. This confirmsto learnis an infinitive.)
Common Mistakes
- Using the Infinitive Instead of the Gerund: This is arguably the most prevalent mistake. Many languages use an infinitive after a preposition where English requires a gerund. You might hear or write:
I'm interested in to learn Spanish.(Incorrect) →I'm interested in learning Spanish.She left without to say goodbye.(Incorrect) →She left without saying goodbye.
- Confusion with
to-Infinitives: As discussed,tois uniquely tricky. A very common mistake is using a base verb afterlook forward to,object to,be accustomed to, orbe used to. I look forward to meet you.(Incorrect) →I look forward to meeting you.He is used to wake up early.(Incorrect) →He is used to waking up early.
- Incorrect Spelling of Gerunds: While not directly a grammar rule, misspelling gerunds can detract from clarity. Common errors include:
- Forgetting to drop the silent
e:writeinginstead ofwriting. - Forgetting to double the consonant:
runinginstead ofrunning.
- Over-Generalizing the Rule: While the rule is broad, not every verb is followed by a preposition. Applying the
Preposition + Gerundpattern when no preposition is present would be incorrect. I enjoy reading.(Correct -enjoyis directly followed by a gerund, not a preposition.)I enjoy about reading.(Incorrect - no preposition is needed afterenjoy.)
- Identifying Prepositions: Always check if a word before a verb is a preposition.
- Memorizing Collocations: Learn verbs and adjectives that commonly take specific prepositions (e.g.,
good at,insist on,dream of). - Practicing Fixed
toPhrases: Consciously practice sentences withlook forward to,object to,be used to, ensuring a gerund follows.
Real Conversations
The Preposition + Gerund structure is integral to natural, everyday English. You'll encounter it constantly in various modern contexts, from casual texts to professional emails. It’s how native speakers concisely refer to actions or states as nouns.
- Texting and Social Media: In informal communication, this structure helps convey quick thoughts or reactions.
- Thx for helping me out today!
- Obsessed with watching this new series.
- So excited about going to the concert!
- Ugh, tired of waiting in line.
- Work Emails and Professional Communication: This rule contributes to clear and professional expression.
- Thank you for reviewing the attached document.
- We are looking forward to collaborating on this project.
- Please let us know your thoughts on improving efficiency.
- I apologize for the delay in responding. (Here, delay is a noun, but the pattern is similar in its function of expressing reason.)
- Casual Conversations: In spoken English, it's a fluid part of expressing opinions, plans, and experiences.
- What are you thinking about doing this weekend?
- I'm really good at remembering faces, but bad at recalling names.
- She insisted on paying for dinner, even though I offered.
- He talks a lot about travelling the world.
Notice how these examples demonstrate that native speakers don't consciously apply the rule. They use it instinctively because it's deeply ingrained in the language. The key for you is to develop that same instinct through exposure and practice. For instance, the phrase looking forward to is a very common closing in emails, always followed by an -ing verb: looking forward to hearing from you, looking forward to seeing you, looking forward to discussing this further.
Quick FAQ
- Can a gerund after a preposition have an object or be modified?
- Is it always the
-ingform after a preposition? Are there any exceptions?
- How do I know if
tois a preposition or part of an infinitive?
- Why can't I just say
for to doorwithout to go?
- Does this rule apply to all prepositions?
Structure of Prepositional Gerunds
| Preposition | Negative (Optional) | Gerund (-ing) | Example |
|---|---|---|---|
|
about
|
|
leaving
|
I'm thinking about leaving.
|
|
for
|
not
|
coming
|
Sorry for not coming.
|
|
at
|
|
singing
|
She's great at singing.
|
|
without
|
|
asking
|
Don't go without asking.
|
|
of
|
not
|
knowing
|
The fear of not knowing.
|
|
to
|
|
working
|
I'm used to working.
|
Meanings
The use of the gerund form of a verb (the -ing form) as the object of a preposition to describe an action related to that preposition.
General Prepositional Use
Following standard prepositions like 'of', 'about', 'for', 'with', 'without', 'by'.
“I'm thinking about moving to London.”
“You can't learn English without practicing.”
Adjective + Preposition Combinations
Used when an adjective requires a specific preposition which then takes a gerund.
“She is afraid of flying.”
“We are interested in buying the house.”
The 'To' Preposition Trap
Using -ing after 'to' when 'to' functions as a preposition rather than part of an infinitive.
“I am used to waking up early.”
“I object to paying extra for water.”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
Prep + Verb-ing
|
I'm interested in joining.
|
|
Negative
|
Prep + not + Verb-ing
|
He's worried about not passing.
|
|
Question
|
Wh- + ... + Prep + Verb-ing?
|
What are you afraid of doing?
|
|
Phrasal Verb
|
Verb + Prep + Verb-ing
|
She gave up smoking.
|
|
Adjective + Prep
|
Adj + Prep + Verb-ing
|
I'm bored with waiting.
|
|
Noun + Prep
|
Noun + Prep + Verb-ing
|
The reason for calling was...
|
Formality Spectrum
I look forward to meeting with you to discuss the proposal. (Professional to Social)
I'm looking forward to seeing you next week. (Professional to Social)
Can't wait for hanging out later! (Professional to Social)
Stoked for catching up tonight. (Professional to Social)
Common Prepositions that take Gerunds
Feelings
- afraid of flying
- excited about going
Skills
- good at drawing
- bad at dancing
To: Infinitive vs Preposition
Should I use -ing?
Is there a preposition before the verb?
Phrasal Verbs with Gerunds
Ending
- • Give up
- • Finish with
- • Stop
Continuing
- • Keep on
- • Go on
- • Carry on
Examples by Level
Thank you for coming.
I am good at cooking.
She is interested in music.
He left without eating.
What about going to the cinema?
I'm tired of working late.
They are afraid of losing the game.
She is famous for singing pop songs.
I look forward to meeting you next week.
He succeeded in passing the exam.
We are thinking of buying a new car.
Instead of complaining, you should help.
I'm not used to driving on the left.
She apologized for not calling earlier.
He was accused of stealing the money.
There's no point in waiting any longer.
With a view to expanding the business, they hired more staff.
I have no objection to your staying here.
He is dedicated to preserving the environment.
In addition to being a doctor, she is a pilot.
The rationale for implementing such measures remains unclear.
He took exception to being called a liar.
Notwithstanding his having failed, he tried again.
They are on the verge of discovering a cure.
Easily Confused
Learners use 'for' + infinitive to explain why they do something.
'I used to smoke' (past habit) vs 'I am used to smoking' (familiarity).
Thinking 'to' always precedes a base verb.
Common Mistakes
Thanks for help me.
Thanks for helping me.
I'm good at cook.
I'm good at cooking.
Before go, say bye.
Before going, say bye.
I'm interested in learn.
I'm interested in learning.
He left without to say anything.
He left without saying anything.
How about to go out?
How about going out?
I'm afraid of fly.
I'm afraid of flying.
I look forward to see you.
I look forward to seeing you.
I'm used to wake up early.
I'm used to waking up early.
He apologized for be late.
He apologized for being late.
In addition to be rich, he is kind.
In addition to being rich, he is kind.
Sentence Patterns
I am thinking about ___.
Thank you for ___.
She is famous for ___.
Despite ___ , he stayed happy.
Real World Usage
I am responsible for overseeing the budget.
How about grabbing a coffee?
Check the weather before heading out.
Obsessed with watching these tutorials!
This study focuses on identifying the causes...
After boiling the water, add the pasta.
The 'Noun Test'
The 'To' Trap
Negative Gerunds
Politeness
Smart Tips
Try putting the word 'it' after 'to'. If the sentence still makes sense, 'to' is a preposition. Use -ing!
Always use 'for' + -ing. It's the most polite and natural way to express gratitude for an action.
If you don't want to say 'I' or 'You', just use the -ing form directly after 'before' or 'after'.
Remember that the 'particle' in a phrasal verb is often a preposition. Treat it like one!
Pronunciation
The 'ng' sound
In the gerund ending '-ing', the 'g' is usually silent. The sound is a nasal /ŋ/.
Linking
Prepositions ending in a consonant often link to the gerund if it starts with a vowel sound.
Stress on the Gerund
I'm good at SWIMMING.
The focus is on the activity.
Memorize It
Mnemonic
Prepositions are 'Noun-Hungry'. If you feed them a verb, you must dress it as a noun with an -ing hat.
Visual Association
Imagine a bridge (the preposition) that only allows cars (nouns) to cross. A person (verb) wants to cross, so they have to get inside a car-shaped costume labeled '-ing'.
Rhyme
After 'at', 'for', 'in', and 'of', the -ing form is what we love!
Story
A chef was 'good at' cooking, but 'tired of' cleaning. He 'thought about' quitting, but 'dreamed of' winning a Michelin star. He 'succeeded in' finishing his shift 'without' complaining.
Word Web
Challenge
Write 5 sentences about your day using 'before', 'after', 'by', 'for', and 'about' followed by an -ing verb.
Cultural Notes
In the UK, 'keen on' + gerund is very common for expressing interest.
Americans frequently use 'excited about' or 'into' + gerund.
Using 'look forward to + -ing' is the gold standard for closing professional emails globally.
The English gerund originates from Old English verbal nouns ending in '-ung' or '-ing'.
Conversation Starters
What are you most interested in learning this year?
Are you used to waking up early on weekends?
What is something you have given up doing recently?
What are you looking forward to doing on your next vacation?
Journal Prompts
Common Mistakes
Test Yourself
I'm interested in ___ (learn) more about your culture.
Which sentence is grammatically correct?
Find and fix the mistake:
I look forward to see you at the party.
apologized / for / late / being / she
Match each item on the left with its pair on the right:
You can use an infinitive (to + verb) after the preposition 'for' to explain purpose.
A: Are you coming to the park? B: No, I'm tired of ___.
Identify the odd one out.
Score: /8
Practice Exercises
8 exercisesI'm interested in ___ (learn) more about your culture.
Which sentence is grammatically correct?
Find and fix the mistake:
I look forward to see you at the party.
apologized / for / late / being / she
1. Good at... 2. Afraid of... 3. Tired of...
You can use an infinitive (to + verb) after the preposition 'for' to explain purpose.
A: Are you coming to the park? B: No, I'm tired of ___.
Identify the odd one out.
Score: /8
Practice Bank
13 exercisesI'm tired `of ___` the same old movies.
They apologized for be late.
Which sentence is correct?
Translate into English: 'Él es bueno para reparar coches.'
Arrange these words into a sentence:
Many people are addicted `to ___` on their phones.
I look forward to meet you next week.
Select the correct sentence:
Match the phrases:
She prides herself `on ___` her goals.
Translate into English: 'Él se disculpó por no haber llamado.'
Arrange these words into a sentence:
Choose the correct sentence:
Score: /13
FAQ (8)
In English, prepositions like `for` cannot be followed by an infinitive. You must use the gerund `helping` to make the verb act like a noun.
No. Sometimes it is an infinitive marker (e.g., `I want to go`). If you can put a noun after it (e.g., `I'm used to coffee`), it's a preposition and needs `-ing`.
Yes! Put `not` before the gerund. Example: `He is famous for not giving up.`
If a phrasal verb ends in a preposition (like `give up` or `keep on`), the next verb must be an `-ing` form.
Both are correct, but they use different rules. `Sorry for being late` uses the prepositional gerund rule. `Sorry to be late` uses the adjective + infinitive rule.
Yes, almost all prepositions in English follow this rule when followed by a verb.
It is used in all registers, from casual texting to academic papers. It is a core rule of the language.
This depends on the adjective or verb before it. For example, we say `interested in` but `good at`. You must learn these combinations together.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Preposición + Infinitivo
Spanish uses the infinitive where English uses the gerund.
Préposition + Infinitif
French prepositions (except 'en') take the infinitive.
Präposition + Nomen / zu + Infinitiv
German uses nominalization or infinitive clauses.
Verb (Dictionary form) + no/koto + Preposition
Japanese requires a nominalizer particle.
Preposition + Masdar
The Masdar is a distinct noun form, not just a verb with a suffix.
Preposition + Verb
No suffix like -ing is needed in Chinese.
Learning Path
Prerequisites
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