What Are Can and Could?
Two of the most common modal verbs in English are 'can' and 'could'. These verbs are used to talk about a variety of topics, including abilities, permission, and probability. 'Could' is used to express past ability or possibility.
Uses
Both 'can' and 'could' are widely used modal verbs in English, and they are used in different contexts. English speakers commonly use these modal verbs to express a range of meanings. Here are some of the most important uses of these two modal verbs:
Talking About Ability
Talking About Possibility
Requesting Something
Asking for or Giving Permission
Talking About Ability
We can use these modal verbs to talk about abilities in the present or in the past.
'Can' is used to talk about the abilities in the present moment.
I can read an English poem.
He can speak Japanese very well.
As you can see, the sentence is about what he can do in the present moment.
'Could' is commonly used to talk about abilities or actions that were possible in the past but may not be possible in the present.
I could play the guitar when I was 23.
They could swim here last spring.
Here, the sentence is about how things were before.
Warning!
When using 'can' or 'could', it's important to note that the verb that follows them is always in the simple form, regardless of whether the subject is singular or plural.
He could speak… → Not he could speaks…
Talking about Possibility
Both 'can' and 'could' can be used to make statements about the probability of an event in the present or future. Pay attention to the following examples:
With all these dark clouds, it can rain tonight.
As you can see, the sentence is about the possibility of rain at the moment.
Life can be tough in Iran these days.
She could still be here.
Perhaps we could talk about it some other time.
Requesting Something
'Can' is sometimes used to make a request in informal situations, such as friendly conversations. However, it's important to note that using 'can' in this way is considered informal and may not be appropriate in more formal settings.
Can I help you with something, boy?
Can we talk about it later Martha?
Tip!
Remember to use 'could' to make a request in more formal settings.
Could I have a cup of coffee, please?
Here, the request is being made in the present moment.
Asking for or Giving Permission
'Can' is commonly used to ask for or give permission in English. Carefully study the following examples:
Can I sit here?
Asking for permission
You can go to the movies tonight
Giving permission
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