Can: Ability in Present
Use `can` plus a base verb to express what you are capable of doing right now.
The Rule in 30 Seconds
- Use `can` for present abilities and learned skills.
- The form never changes for different subjects like `he` or `she`.
- Always use the base verb without `to` after `can`.
- Use `can't` for negatives and swap subject/verb for questions.
Quick Reference
| Sentence Type | Formula | Example |
|---|---|---|
| Positive | Subject + can + verb | I can swim. |
| Negative | Subject + can't + verb | He can't drive. |
| Question | Can + subject + verb? | Can they cook? |
| Short Answer (+) | Yes, subject + can | Yes, I can. |
| Short Answer (-) | No, subject + can't | No, she can't. |
| Third Person | She + can + verb | She can code. |
Key Examples
3 of 8I can speak three languages fluently.
Puedo hablar tres idiomas con fluidez.
He can play the guitar like a pro.
Él puede tocar la guitarra como un profesional.
I'm sorry, I can't help you with your homework today.
Lo siento, no puedo ayudarte con tu tarea hoy.
The 'To' Trap
Think of 'can' and 'to' as two magnets that push each other away. They can never be next to each other in a sentence!
The Third Person 'S'
Forget the 's' rule for 'he/she/it' when using 'can'. It's 'She can', not 'She cans'. Adding an 's' is a very common B1 mistake.
The Rule in 30 Seconds
- Use `can` for present abilities and learned skills.
- The form never changes for different subjects like `he` or `she`.
- Always use the base verb without `to` after `can`.
- Use `can't` for negatives and swap subject/verb for questions.
Overview
You have skills. You have talents. Maybe you play the guitar. Maybe you speak three languages fluently. To talk about these amazing things, you need the word can. It is the Swiss Army knife of English grammar. It is simple. It is powerful. It makes you sound confident and capable. Think of it as your "superpower" verb. It tells the world what you are capable of doing right now. Whether you are at a job interview or meeting friends, can is your best friend. It is one of the first things you learn, but even experts use it every single day.
How This Grammar Works
Can is what we call a modal verb. Modal verbs are a bit like the rebels of the grammar world. They do not follow the usual rules that other verbs follow. For example, they do not change their shape. They do not care who is doing the action. Whether it is I, you, or the entire football team, can stays exactly the same. You do not need to add an s at the end. You do not need to use do or does to make a question. This is great news for you! It means less memorizing and fewer mistakes. Think of it like a universal remote control for your sentences. It works for everything without needing extra batteries.
Formation Pattern
- 1Building a sentence with
canis as easy as making toast. Follow these three simple steps: - 2Start with your subject. This is the person or thing doing the action (e.g.,
I,She,We). - 3Add the word
can. Do not change it. Do not add anything to it. - 4Add the base verb. This is the action in its simplest form (e.g.,
swim,dance,code). Do NOT usetobefore the verb. - 5For negative sentences, just add
notto makecannot. In daily life, we almost always use the short version:can't. For questions, just swap the subject andcan. Instead ofYou can, sayCan you?. It is like a quick grammar dance move.
When To Use It
Use can when you want to talk about your current abilities. This includes things you learned, like I can speak Spanish. It also includes natural talents, like She can sing beautifully.
Real-world scenarios are everywhere:
- Job Interviews: Tell them
I can manage large projectsorI can use Photoshop. It shows you are ready for the job. - Socializing: Ask a new friend
Can you play tennis?or tell themI can cook a great lasagna. - Asking for Directions: If you are lost, you might ask
Can you show me the way to the station?(This is technically a request, but it is based on their ability to help you!). - Ordering Food: While
canis often for ability, we use it to see if the kitchen is able to help:Can I have the burger without onions?
When Not To Use It
Do not use can for things that happened in the past. If you were a great runner ten years ago, you must use could. Can is strictly for the "now" and the general present.
Also, do not use can for specific future plans that are already fixed. For example, if you have a doctor's appointment, you wouldn't say I can see the doctor at 4 PM to describe the schedule. You would say I am seeing the doctor.
Finally, never use can with other modal verbs. You cannot say I will can. That sounds like a robot having a technical glitch. If you need to use a future tense, switch to will be able to.
Common Mistakes
Even native speakers make mistakes, but you can avoid them! The biggest mistake is adding to after can. Never say I can to swim. It sounds clunky and wrong. If you say this, a grammar teacher somewhere might cry a little bit.
Another common error is adding an s for he, she, or it. People often say She cans play piano. This is like putting ketchup on pancakes—it just doesn't belong there.
Lastly, be careful with the negative form. Cannot is actually one single word, not two. But honestly, just use can't. It makes you sound much more natural and less like a textbook.
Contrast With Similar Patterns
You might hear people say I am able to. This means the same thing as can. However, can is much more common in spoken English. I am able to sounds very formal. Use it in a legal document or a very serious business report. In a coffee shop? Stick with can.
Also, compare can with may. Years ago, teachers insisted that can is for ability and may is for permission. They would say, "I don't know if you *can* go to the bathroom, but you *may*!" Today, almost everyone uses can for both. Don't worry about being too perfect here.
Quick FAQ
Q. Is can polite enough for my boss?
A. Yes, it is perfectly fine and professional.
Q. Does can ever change to cans?
A. Never. Not even if the subject is a king or a queen.
Q. Can I use it for a temporary situation?
A. Yes! I can help you with that box right now.
Q. Why does can't sound different in different accents?
A. In British English, it sounds like "kahnt." In American English, it sounds like "kant." Both are correct!
Reference Table
| Sentence Type | Formula | Example |
|---|---|---|
| Positive | Subject + can + verb | I can swim. |
| Negative | Subject + can't + verb | He can't drive. |
| Question | Can + subject + verb? | Can they cook? |
| Short Answer (+) | Yes, subject + can | Yes, I can. |
| Short Answer (-) | No, subject + can't | No, she can't. |
| Third Person | She + can + verb | She can code. |
The 'To' Trap
Think of 'can' and 'to' as two magnets that push each other away. They can never be next to each other in a sentence!
The Third Person 'S'
Forget the 's' rule for 'he/she/it' when using 'can'. It's 'She can', not 'She cans'. Adding an 's' is a very common B1 mistake.
Pronunciation Secret
In fast speech, 'can' often sounds like 'kun'. Focus on the main verb to understand the meaning. 'I kun SWIM'.
Polite Requests
In English-speaking countries, using 'Can you...?' is a very common and friendly way to ask for a favor, even with strangers.
Exemples
8I can speak three languages fluently.
Focus: can speak
Puedo hablar tres idiomas con fluidez.
This describes a learned skill.
He can play the guitar like a pro.
Focus: He can
Él puede tocar la guitarra como un profesional.
Notice there is no 's' on 'can'.
I'm sorry, I can't help you with your homework today.
Focus: can't help
Lo siento, no puedo ayudarte con tu tarea hoy.
'Can't' is the standard contraction for 'cannot'.
Can you swim across this lake?
Focus: Can you
¿Puedes nadar a través de este lago?
The subject and 'can' are swapped.
✗ She cans sing → ✓ She can sing.
Focus: can sing
Ella puede cantar.
Never add 's' to modal verbs.
✗ I can to dance → ✓ I can dance.
Focus: can dance
Puedo bailar.
Never use 'to' after 'can'.
We can provide the requested documents by Monday.
Focus: can provide
Podemos proporcionar los documentos solicitados para el lunes.
'Can' is appropriate for professional emails.
I can see why you are frustrated with the situation.
Focus: can see
Puedo ver por qué estás frustrado con la situación.
Here, 'can see' means 'understand'.
Test Yourself
Choose the correct form to complete the sentence about a job skill.
My brother ___ very fast on a computer keyboard.
We use 'can' plus the base verb. We never add 's' to 'can' or the main verb.
Make this sentence negative to show a lack of ability.
I ___ play the violin; it's too difficult for me.
The negative of 'can' is 'cannot' or the contraction 'can't'.
Turn this statement into a question.
___ your sister bake a chocolate cake?
To form a question, move 'Can' to the beginning of the sentence before the subject.
🎉 Score: /3
Visual Learning Aids
Can vs. Can't
How to build a 'Can' sentence
Is it a present ability?
Are you adding 'to'?
Common Contexts for 'Can'
Work
- • Can use Excel
- • Can lead meetings
Hobbies
- • Can paint
- • Can play drums
Frequently Asked Questions
22 questionsIt expresses that someone has the power, skill, or opportunity to do something. For example, I can swim means I know how to swim.
No, it never changes. You say he can and she can, just like you say I can.
You add not to get cannot or the contraction can't. Most people use can't in conversation because it is faster.
It is written as one word: cannot. Writing it as can not is usually considered a mistake in modern English.
Move can to the front of the sentence. For example, Can you help me? is the question form of You can help me.
No, never use do with can. Simply swap the subject and the word can.
No, you must use the base verb without to. Say I can dance, not I can to dance.
No, for the past, you must use could. Can is only for the present or general abilities.
Yes, it is very common to use can to ask for permission, like Can I go now?. It is slightly less formal than may.
Traditionally, can is for ability and may is for permission. However, in modern English, can is used for both in almost all situations.
In a sentence, it often sounds like a weak kun. If you are emphasizing it, it sounds like kan (rhymes with 'pan').
In American English, it has a flat 'a' sound. In British English, it often sounds like kahnt with a long 'a'.
No, you cannot use two modal verbs together. Instead of will can, use will be able to.
No, you cannot combine them. You would have to rephrase the sentence entirely.
Simply use can't. For example, I can't play the piano shows you lack that specific skill.
Yes, it is perfectly professional. Saying I can use Python is the standard way to list your skills.
Stress the word can loudly when speaking. I CAN finish this on time, I promise!
Yes, Can you pass the salt? is a very common way to make a request in English.
Yes, but sometimes writers prefer is able to or has the capacity to for a more formal tone.
They use it for formality or to use other tenses like the future or present perfect where can doesn't work.
Yes, like It can get very cold in winter. This means it is possible for it to be cold.
Yes, they mean the exact same thing. Can't is just the informal, spoken version.
Grammaire lie
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