Level: beginner

We use can and can't to talk about someone's skill or general abilities:

She can speak several languages.
He can swim like a fish.
They can't dance very well.

We use can and can't to talk about the ability to do something at a specific time in the present or future:

I can see you.
Help! I can't breathe.

We use could and couldn't to talk about the past:

She could speak several languages.
I couldn't see you.

Ability: can and could 1


Ability: can and could 2


Level: intermediate

We use could have to say that someone had the ability or opportunity to do something, but did not do it:

She could have learned Swahili, but she didn't want to.
I could have danced all night. [but I didn’t]

Ability: could have 1


Ability: could have 2



Hello youssef25,

This looks like a question from an exam or from some homework, and we prefer not to do users' homework for them!  However, I will help you this time.  The most likely answer is 'Would you mind opening the window, please?'

One thing to be careful of here is the reply to this question.  If the person replying wants to help - that is to say, if they will open the window - then they answer 'No, not at all.'  If they do not want to open the window then the answer is 'Yes, actually, I do (mind).'

Best wishes,



The LearnEnglish Team

could someone answer me two questions please?
first one, is "have to" a modal verb?
second one, when do I have to use "must" or "have to"?
thank you in advance

Hello monchoroca,

No, have to is not considered a modal verb. Both must and have to are used to say that an action is necessary, and much of the time there is no difference between them, i.e. you can use either form. There is sometimes a difference between the two in that must can be used to express the speaker's personal feelings, but normally have to isn't used in this way - it is used to talk about rules or facts.

In the negative (don't have to and mustn't), these two forms have completely different uses! mustn't means it is necessary not to do something, whereas don't have to means it is not necessary to do it. For example:

You mustn't tell him my secret. (don't tell him!)
You don't have to come to my party. (you can come if you want to)

I hope this helps!

Best wishes,
The LearnEnglish Team


is it possible to use like,,, Hi could you please pass it to me ?

Hi kishoreDhak,

'Could you please pass it to me?' is a perfectly good sentence.

Best wishes,



The LearnEnglish

Hi! May is more formal than could. Isn't it?

Hi ozan1071,

In general, that is correct. However, remember that they are not synonyms in all contexts but can have different meanings and uses, as this page and other pages on modal verbs show.

Best wishes,



The LearnEnglish Team

Hi Kirk
whenever i write anything so i have a feeling of incorrect
what should i do?

Hello Muhammad,

On the one hand, this can be valuable, as it can encourage you to check your work and to learn accurate grammar, vocabulary and collocations. On the other hand, making mistakes is a perfectly natural part of learning, and if this feeling gets too strong, it could discourage you from using new and more advanced forms. Without knowing you better, it's impossible for me to recommend anything more specific, but please keep this in mind as you think about this. Finally, you might find it useful to read the advice on our Help page.

I hope this helps you!

Best regards,
The LearnEnglish Team

I will work on my weak areas.