Verbs with 'To': Decide, Promise, Manage (Infinitives Only)
Grammar Rule in 30 Seconds
Certain verbs like 'decide', 'promise', and 'manage' must be followed by 'to' + the base verb, never the '-ing' form.
- Use 'to' after 'decide' for choices: 'I decided to stay.'
- Use 'to' after 'promise' for commitments: 'She promised to help.'
- Use 'to' after 'manage' for achievements: 'We managed to finish.'
Overview
Words like decide and promise need to before the next word.
This helps you talk about plans. Do not use -ing here.
How This Grammar Works
Formation Pattern
decide | to | study | I decide to study for the exam. |
promised | to | call | She promised to call me later. |
have managed | to | finish | They have managed to finish the project. |
decided | not | to | go | He decided not to go to the party. |
agreed | not | to | sign | We agreed not to sign the contract. |
When To Use It
- Verbs:
decide,plan,intend,agree,choose,aim,prepare,hope,expect - Example: The committee
intends to reviewall applications by Friday. - Example: We
chose to travelby train for environmental reasons.
- Verbs:
promise,offer,refuse,agree,swear,vow,threaten - Example: The supplier
refused to lowertheir price. - Example: My colleague
offered to helpme with the presentation.
- Verbs:
manage,fail,attempt,strive,struggle,endeavor - Example: Despite the traffic, I
managed to arriveon time. (Implies difficulty was overcome) - Example: The company
failed to meetits quarterly targets. (More formal thandidn't manage to)
- Verbs:
seem,appear,tend,pretend - Example: The new software
seems to bemuch more efficient. - Example: Children often
pretend to besuperheroes.
- Verbs:
want,need,wish,would like,demand,desire - Example: Applicants
need to submita portfolio of their work. - Example: The protestors
demanded to speakwith the mayor.
Common Mistakes
- Incorrect: They
decided startinga new business. - Correct: They
decided to starta new business. - Incorrect: I
promise finishingthe report by noon. - Correct: I
promise to finishthe report by noon.
- Incorrect: We
managed fixthe bug in the code. - Correct: We
managed to fixthe bug in the code. - Incorrect: She
agreed lendme the money. - Correct: She
agreed to lendme the money.
- Informal but common: I
chose to notparticipate. - Correct & Formal: I
chose not toparticipate. - Rule for B2 Learners: For exams and professional communication, always use the
not tostructure.
Real Conversations
This pattern is not confined to textbooks; it is a fundamental part of modern, everyday English across all registers.
1. Professional & Workplace Communication
Notice the concise, goal-oriented nature of the language.
- Slack Message: "Hey team, I plan to push the code to staging after lunch. Let me know if you foresee any issues."
- Email: "Further to our conversation, we agree to extend the deadline to 31st October."
- Meeting: "In Q3, we managed to reduce customer churn by 15%, but we failed to hit our revenue target."
2. Casual & Social Interactions
This pattern is used for making plans, sharing stories, and expressing desires.
- Text Message: "Decided not to go out tonight. Need to catch up on sleep."
- Face-to-Face: "It was hilarious. He was pretending to understand the rules, but he had no idea."
- Social Media Post: "Finally managed to get tickets for the concert! Seem to be sold out everywhere else."
3. Academic Contexts
In academic writing and discussion, this structure is crucial for outlining arguments and research processes.
- Research Paper: "This study aims to identify the primary factors influencing consumer behavior."
- Student Email to Professor: "I am writing to request to change my tutorial group for this semester."
- Presentation: "The previous research failed to account for socioeconomic variables, which our model attempts to rectify."
Quick FAQ
It's semantic. Verbs like decide and hope express a forward-looking intention, plan, or desire. The to-infinitive historically evolved to signal purpose or direction toward a goal, making it a natural complement to the meaning of these verbs. It links a present mental state to a future action.
Instead of rote memorization, try grouping the verbs by their meaning: intention (plan, intend), commitment (promise, refuse), effort (manage, attempt), and appearance (seem, appear). This contextual learning is far more effective. When you learn a new verb, note its pattern immediately.
It is not 'wrong' in the sense that native speakers use it frequently in informal speech. However, in prescriptive grammar—the kind required for academic essays and formal exams—I decided not to go is considered the standard and more elegant form. As a B2 learner, you should master the standard form first.
fail to do and not manage to do?Fail to do is more formal, direct, and often sounds more final. It is common in academic and technical reports (The experiment failed to produce results). Didn't manage to do is more common in general conversation and emphasizes that an effort was made, highlighting the process and the difficulty (I didn't manage to finish everything on my to-do list).
This is an excellent question. The rule applies only when agree is followed by a verb. Agree to do something is a verb pattern. Agree with someone and agree on a topic are different grammatical structures using prepositions followed by nouns or noun phrases. You must distinguish between verb patterns and phrasal verbs or prepositional complements.
want to and would like to. Is there a real difference?Yes, a significant one in terms of politeness. Would like to is more formal and polite, making it the standard choice when making requests to strangers or in professional settings (e.g., "I would like to order a coffee"). Want to is more direct and is perfectly fine with friends and family, but can sound abrupt or demanding in other contexts.
Conjugating the Main Verbs
| Tense | Decide | Promise | Manage | Followed by... |
|---|---|---|---|---|
|
Present Simple
|
I decide
|
I promise
|
I manage
|
to + verb
|
|
Past Simple
|
I decided
|
I promised
|
I managed
|
to + verb
|
|
Present Continuous
|
I am deciding
|
I am promising
|
I am managing
|
to + verb
|
|
Present Perfect
|
I have decided
|
I have promised
|
I have managed
|
to + verb
|
|
Future (Will)
|
I will decide
|
I will promise
|
I will manage
|
to + verb
|
|
Negative
|
I don't decide
|
I don't promise
|
I don't manage
|
to + verb
|
Meanings
These three verbs belong to a specific category of English verbs that require a 'to-infinitive' to complete their meaning when followed by another action.
Decision-making
Using 'decide' to indicate a choice made between several options.
“They decided to move to London.”
“Have you decided to take the job?”
Commitment
Using 'promise' to give a word or assurance that an action will happen.
“I promise to call you later.”
“She promised to keep the secret.”
Successful Effort
Using 'manage' to show that something difficult was achieved.
“We managed to catch the last train.”
“How did you manage to find us?”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
Subject + Verb + to + Base
|
I managed to finish.
|
|
Negative (Main)
|
Subject + don't/didn't + Verb + to + Base
|
I didn't decide to go.
|
|
Negative (Infinitive)
|
Subject + Verb + not + to + Base
|
I decided not to go.
|
|
Question
|
Do/Did + Subject + Verb + to + Base?
|
Did you promise to help?
|
|
Perfect
|
Subject + have + Verb-ed + to + Base
|
She has promised to stay.
|
|
Continuous
|
Subject + am/is/are + Verb-ing + to + Base
|
They are deciding to leave.
|
Formality Spectrum
We managed to complete the assignment within the deadline. (Workplace)
We managed to finish the work on time. (Workplace)
We managed to get it done. (Workplace)
We actually pulled it off! (Workplace)
The 'To' Connection
Decide
- to stay stay
- to leave leave
Promise
- to help help
- to call call
Manage
- to finish finish
- to win win
Infinitive vs Gerund
Choosing the Form
Is the verb Decide, Promise, or Manage?
Examples by Level
I decide to play.
I promise to help.
I manage to run.
Do you decide to stay?
We decided to watch a movie.
He promised to call me.
She managed to find her keys.
They didn't decide to leave yet.
I've decided to start a new hobby.
You must promise not to tell anyone.
Despite the rain, we managed to arrive on time.
Will you manage to finish the project by Friday?
The board has decided to postpone the merger.
He solemnly promised to uphold the company's values.
How on earth did you manage to secure such a deal?
I decided not to accept the offer after much deliberation.
The government decided to implement the policy regardless of the backlash.
She had promised to oversee the transition, but her health failed.
Against all odds, the team managed to salvage the mission.
They decided not to proceed, fearing the legal ramifications.
The committee decided to circumvent the usual protocols to expedite the process.
Having promised to remain impartial, the judge refused to comment.
The diplomat managed to broker a peace treaty that had eluded his predecessors.
It was decided not to disclose the findings until further verification was complete.
Easily Confused
Learners often use the same pattern for both, but 'suggest' requires -ing.
Both show ability, but 'manage' implies a specific success after effort.
Both look forward, but 'promise' is a guarantee.
Common Mistakes
I decide going.
I decide to go.
I promise help you.
I promise to help you.
He manage to win.
He managed to win.
I decided to not go.
I decided not to go.
Did you managed to finish?
Did you manage to finish?
She promised calling me.
She promised to call me.
We decided to stay not.
We decided not to stay.
I managed finishing the work.
I managed to finish the work.
I have decided going.
I have decided to go.
He promised to me to help.
He promised to help me.
I decided to quickly go.
I decided to go quickly.
He managed to have finished.
He managed to finish.
They promised to be helping.
They promised to help.
I didn't manage to not fail.
I didn't manage to pass.
Sentence Patterns
I finally managed to ___.
Have you decided to ___ yet?
She promised not to ___.
They managed to ___ despite the ___.
Real World Usage
I managed to lead the team to success.
I promise to be there soon!
We decided to take the bus instead.
We managed to resolve your issue.
Finally managed to finish my workout!
The party promises to pay the sum.
The 'Future' Hint
No -ing allowed!
Manage = Success
Polite Refusal
Smart Tips
Check if the first verb is 'Decide', 'Promise', or 'Manage'. If it is, reach for the 'to'.
Use 'managed to' instead of 'did' to emphasize your hard work.
Place 'not' right before 'to' to sound like a native speaker.
Use 'We have decided to...' to sound authoritative and clear.
Pronunciation
The Weak 'To'
In natural speech, 'to' is often reduced to a 'schwa' sound /tə/.
Linking 'Manage'
The 'd' in 'managed' often links to the 't' in 'to', sounding like one sharp 't' sound.
Emphasis on Achievement
I finally MANAGED to finish!
Stress 'managed' to show how hard the task was.
Memorize It
Mnemonic
D.P.M. = Don't Play Music (Decide, Promise, Manage) — they only like the 'to' tune!
Visual Association
Imagine a bridge labeled 'TO'. On one side are the three friends: Decide, Promise, and Manage. They can only cross the bridge to reach the next action.
Rhyme
Decide, Promise, Manage too, always follow with a 'to'.
Story
I decided to go to the store. I promised to buy milk. Even though it was crowded, I managed to find some.
Word Web
Challenge
Write three sentences about your day using 'decided to', 'promised to', and 'managed to'.
Cultural Notes
'Manage' is frequently used in the phrase 'I can't manage to...', often as a polite way to decline an invitation or task due to being overwhelmed.
'Promise' is often used in casual conversation as a standalone confirmation ('Promise?'), emphasizing the importance of the to-infinitive that follows.
'Decide to' is the standard for professional transparency. Using 'We decided to...' is seen as taking clear ownership of a project's direction.
These verbs come from Latin (decidere, promittere) and Old French (manier).
Conversation Starters
What is something difficult you managed to do recently?
Have you decided to travel anywhere this year?
What did you promise to do for a friend lately?
If you could decide to change one thing in the world, what would it be?
Journal Prompts
Common Mistakes
Test Yourself
They decided ___ to the beach.
Choose the correct option:
Find and fix the mistake:
She promised calling me at midnight.
He made a choice not to eat meat.
A: Did you get the tickets? B: Yes, I ___.
Pick the odd one out:
to / promised / he / help / us
Match each item on the left with its pair on the right:
Score: /8
Practice Exercises
8 exercisesThey decided ___ to the beach.
Choose the correct option:
Find and fix the mistake:
She promised calling me at midnight.
He made a choice not to eat meat.
A: Did you get the tickets? B: Yes, I ___.
Pick the odd one out:
to / promised / he / help / us
1. Decide, 2. Promise, 3. Manage
Score: /8
Practice Bank
13 exercisesWe ___ (plan/travel) to Southeast Asia next year.
The student struggled understanding the complex concept.
Which sentence is correct?
Translate into English: 'Ella no quiere ir a la fiesta.'
Arrange these words into a sentence:
Match the verbs with their correct infinitive phrase:
The manager ___ (intend/discuss) the new policies tomorrow.
After days of searching, he failed finding his lost wallet.
Arrange these words into a sentence:
Which option is grammatically sound?
Translate into English: 'Intento mejorar mis habilidades de escritura.'
Match the verbs on the left with the infinitive phrases on the right:
We ___ (expect/hear) from them by the end of the week.
Score: /13
FAQ (8)
Yes, it is common in spoken English, but in formal writing, `not to go` is preferred.
No. `Can` shows general ability, while `manage to` shows you actually did something difficult.
Because English grammar rules categorize `promise` as an 'infinitive-only' verb.
The main verb changes (e.g., `decided`), but the second verb stays as `to + base`.
Yes! `Agree`, `refuse`, `hope`, and `plan` also follow this pattern.
Usually no. Using `manage` implies there was some effort or difficulty involved.
Usually, but you can also say `I decided on the red car` (using a preposition + noun).
Use `did` for the past: `Did you manage to find it?`
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Decidir + infinitivo
Spanish has no 'to' equivalent between the verbs.
Décider de + infinitif
French uses 'de' while English uses 'to'.
Entscheiden, zu + Infinitiv
Word order in German puts the infinitive at the end.
Verb + koto ni suru
Japanese requires nominalization of the second verb.
Qarrara an + subjunctive verb
The second verb in Arabic must still be conjugated for person.
Jueding + Verb
Chinese has no grammatical markers between verbs.
Learning Path
Prerequisites
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