Need + Gerund vs Infinitive
Use 'need to' when people act; use 'need -ing' when things require maintenance or fixing.
The Rule in 30 Seconds
- Use 'need to' for active subjects doing an action themselves.
- Use 'need -ing' for passive subjects that require a repair or change.
- The 'need -ing' form is a shortcut for 'need to be done'.
- Commonly used for chores, maintenance, repairs, and physical improvements.
Quick Reference
| Pattern | Subject Type | Meaning | Example |
|---|---|---|---|
| Need + To + Verb | Person / Active Agent | The subject must perform the action. | I need to paint the fence. |
| Need + Gerund (-ing) | Object / Thing | The subject needs something done to it. | The fence needs painting. |
| Need + To Be + V3 | Object / Thing | Formal version of the -ing pattern. | The fence needs to be painted. |
| Negative + To + Verb | Person | No obligation for the person. | You don't need to go. |
| Negative + Gerund | Object | The thing is fine as it is. | The car doesn't need washing. |
关键例句
3 / 8I need to call my mother tonight.
Necesito llamar a mi madre esta noche.
The batteries in the remote need changing.
Las pilas del mando necesitan ser cambiadas.
Your hair is getting long; it needs cutting.
Tu pelo se está haciendo largo; necesita un corte.
The 'To Be' Test
If you can replace the `-ing` with `to be + past participle` (e.g., 'needs cleaning' -> 'needs to be cleaned'), then the gerund is correct!
Avoid 'I need doing'
Unless you are a robot that needs a software update, don't use `-ing` after `I need`. It sounds like you are the object being fixed.
The Rule in 30 Seconds
- Use 'need to' for active subjects doing an action themselves.
- Use 'need -ing' for passive subjects that require a repair or change.
- The 'need -ing' form is a shortcut for 'need to be done'.
- Commonly used for chores, maintenance, repairs, and physical improvements.
Overview
Ever looked at a pile of dirty laundry and sighed? You might say, "I need to wash these clothes." Or, you could say, "These clothes need washing." Both sentences are correct. But they use different grammar patterns. One focuses on you. The other focuses on the clothes. This guide explains when to use need with an -ing word. It also shows when to use need with a to verb. It is like choosing between a hammer and a screwdriver. Both are useful. You just need the right one for the job. Let's dive in and fix your grammar toolbelt.
How This Grammar Works
The verb need is a bit of a shapeshifter. When you follow it with to and a verb, it is active. This means the subject is doing the work. When you follow it with a gerund (the -ing form), it feels passive. The subject is receiving the action. Think of it as a perspective shift. You can focus on the person acting. Or you can focus on the thing that needs help. It is a common way to talk about repairs. It is also great for chores and maintenance. Even native speakers mix these up sometimes. But don't worry. Once you see the pattern, it is quite simple.
Formation Pattern
- 1There are two main ways to build these sentences. Follow these steps to get it right every time:
- 2Active Pattern: [Subject] + [need/needs] + [to + base verb].
- 3Example:
I need to fix the sink. - 4Use this when the subject is the one doing the work.
- 5Passive-Meaning Pattern: [Subject] + [need/needs] + [verb + -ing].
- 6Example:
The sink needs fixing. - 7Use this when the subject is the thing being fixed.
- 8The Formal Alternative: [Subject] + [need/needs] + [to be + past participle].
- 9Example:
The sink needs to be fixed. - 10This means the same thing as the
-ingversion. It just sounds a bit more serious.
When To Use It
Use the need + -ing pattern for things that cannot act themselves. Think about your car, your house, or your hair. These things don't "do" actions. They have actions done to them.
- Real-world scenario: You are at a car mechanic. You say, "The brakes need checking." This is better than saying "I need to check the brakes" if you want the mechanic to do it.
- Real-world scenario: You are at a job interview. You might say, "This department needs organizing." It shows you see a problem that needs a solution.
- Real-world scenario: Ordering food. You might tell a waiter, "This steak needs cooking a bit more." It is a polite way to point out a problem without blaming a specific person.
When Not To Use It
Do not use need + -ing when the subject is a person who must act. If you say, "I need washing," people might think you need a bath! Usually, you mean "I need to wash."
- Avoid it for abstract desires. You cannot say "I need loving." (Well, you can in a song, but not in a grammar test!).
- Don't use it for emotions. "I need to feel happy" is correct. "I need feeling happy" is not.
- Avoid it when the action is not a repair or a chore. "The book needs reading" is okay, but "The movie needs watching" sounds a bit strange.
Common Mistakes
The biggest mistake is mixing up the subject and the action. If you say, "The car needs to wash," you are saying the car has hands and a sponge. It sounds like a scene from a cartoon movie!
- ✗ Wrong: "My hair needs to cut."
- ✓ Correct: "My hair needs cutting."
- ✗ Wrong: "I need fixing the door."
- ✓ Correct: "I need to fix the door."
Another mistake is forgetting the s for third-person subjects. Remember: He needs, She needs, It needs. Even if the next word ends in -ing, the main verb need must follow normal tense rules. Think of it like a grammar traffic light. It tells you when to go and when to stop.
Contrast With Similar Patterns
You might know the phrase want + -ing. In some parts of the UK and US, people say, "The carpet wants hoovering." This is very informal. It means the same as needs hoovering. However, need is much more common globally.
Also, compare this to have to. I have to clean the floor is a strong obligation. The floor needs cleaning is more about the state of the floor. One is a command. The other is an observation. It is like the difference between a boss shouting and a friend pointing at a mess.
Quick FAQ
Q. Is need + -ing only for objects?
A. Mostly, yes. But you can use it for body parts, like "My nails need trimming."
Q. Can I use this in the past tense?
A. Yes! "The walls needed painting" is perfectly fine.
Q. Is it okay for American English?
A. Absolutely. It is common in both British and American English, though Brits use it slightly more often.
Q. Does it work with "must"?
A. No, must is a modal verb. You cannot say "The car must washing."
Reference Table
| Pattern | Subject Type | Meaning | Example |
|---|---|---|---|
| Need + To + Verb | Person / Active Agent | The subject must perform the action. | I need to paint the fence. |
| Need + Gerund (-ing) | Object / Thing | The subject needs something done to it. | The fence needs painting. |
| Need + To Be + V3 | Object / Thing | Formal version of the -ing pattern. | The fence needs to be painted. |
| Negative + To + Verb | Person | No obligation for the person. | You don't need to go. |
| Negative + Gerund | Object | The thing is fine as it is. | The car doesn't need washing. |
The 'To Be' Test
If you can replace the `-ing` with `to be + past participle` (e.g., 'needs cleaning' -> 'needs to be cleaned'), then the gerund is correct!
Avoid 'I need doing'
Unless you are a robot that needs a software update, don't use `-ing` after `I need`. It sounds like you are the object being fixed.
The 'Maintenance' Rule
Think of `need + -ing` as the 'Maintenance Rule'. Use it for anything that requires a service, like cars, computers, or gardens.
British vs. American
In the UK, you might hear 'The car wants washing.' It's the same as 'needs washing,' but very informal. Stick to 'need' for exams!
例句
8I need to call my mother tonight.
Focus: to call
Necesito llamar a mi madre esta noche.
The subject 'I' is performing the action.
The batteries in the remote need changing.
Focus: changing
Las pilas del mando necesitan ser cambiadas.
The batteries aren't doing the changing; they receive it.
Your hair is getting long; it needs cutting.
Focus: cutting
Tu pelo se está haciendo largo; necesita un corte.
We use -ing for personal grooming needs.
The contract needs signing before we can proceed.
Focus: signing
El contrato necesita ser firmado antes de que podamos proceder.
Common in business to focus on the document, not the person.
✗ The grass needs to cut. → ✓ The grass needs cutting.
Focus: cutting
El césped necesita ser cortado.
Grass cannot perform the action of cutting.
✗ I need fixing my bike. → ✓ I need to fix my bike.
Focus: to fix
Necesito arreglar mi bicicleta.
If 'I' am the one working, use 'to fix'.
This theory needs testing in a real-world environment.
Focus: testing
Esta teoría necesita ser probada en un entorno real.
Works for abstract concepts that require 'work'.
The windows are clean; they don't need washing.
Focus: don't need washing
Las ventanas están limpias; no necesitan lavarse.
Negative form follows the same logic.
自我测试
Choose the correct form of the verb based on the subject.
The kitchen is a mess! The floor really needs ___.
The floor is an object receiving the action, so we use the gerund (-ing).
Choose the correct form of the verb for the person acting.
I have a big exam tomorrow. I need ___ all night.
The subject 'I' is the person performing the action, so we use 'to + infinitive'.
Identify the correct maintenance form.
My car is making a strange noise. It needs ___ by a professional.
The car needs someone to look at it; 'looking at' functions as a passive gerund here.
🎉 得分: /3
视觉学习工具
Need to vs. Need -ing
Which 'Need' should I use?
Is the subject a person doing an action?
Is it a general obligation?
Common Uses for Need + -ing
Home Repairs
- • Painting
- • Fixing
- • Cleaning
Self Care
- • Hair cutting
- • Nail trimming
常见问题
22 个问题The main difference is the subject's role. Use need to when the subject performs the action and need -ing when the subject receives the action.
It is standard English and perfectly fine for both conversation and writing. However, need to be done is slightly more formal.
In some dialects, yes, like The floor wants cleaning. But in standard B1 English, you should always use need.
Only if the person is receiving a 'service'. For example, The baby needs feeding is common and correct.
Just change need to needed. For example, The house needed painting last year.
Use doesn't need or don't need. For example, The car doesn't need washing today.
Yes! Ask Does the carpet need vacuuming? just like any other present simple question.
Yes, chores are the most common use. The dishes need doing or The laundry needs folding are great examples.
Perfectly. You can say My phone needs charging or The software needs updating.
Yes, you can say My leg needs looking at by a doctor. It focuses on the injury.
You would say My hair needs cutting. It sounds natural and clear.
Yes, This email needs sending immediately is a common office phrase.
Yes! The plants need watering is a very common sentence.
This rule only applies to 'need' as a verb. As a noun, it follows different rules, like There is a need for cleaning.
No, modal verbs like must, should, or can never take the gerund in this passive way.
Americans use it, but they often prefer the formal needs to be cleaned over needs cleaning.
Because it sounds like someone else needs to wash you! Use I need to clean instead.
No, because breaking isn't a repair or service. You'd say The window is going to break.
Yes, it's similar to the 'se' passive or 'necesita ser'. It simplifies the sentence.
Not exactly. Have to is an obligation for a person. Need -ing is a requirement for an object.
Just remember: People 'need to do', but things 'need doing'.
Use to be done in very formal reports or academic writing. In daily life, -ing is more common.
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