Can, could and be able to

Front

What is the difference between 'can' and 'could'?

Back

'Can' is used to express ability in the present, while 'could' is used to express ability in the past or to make polite requests.

Front

When do we use 'be able to'?

Back

'Be able to' is used to express ability in specific situations, especially when referring to future events or when 'can' cannot be used.

Front

Fill in the blank: I __________ swim very well.

Back

CAN

Front

Fill in the blank: She __________ finish the project on time last week.

Back

WAS ABLE TO

Front

What does 'couldn't' indicate in a sentence?

Back

'Couldn't' indicates a lack of ability or possibility in the past.

Front

Provide an example of a sentence using 'can' to express ability.

Back

I can play the guitar.

Front

Provide an example of a sentence using 'could' to express a past ability.

Back

When I was younger, I could run fast.

Front

How do you form a negative sentence with 'can'?

Back

You form a negative sentence with 'can' by adding 'not' after 'can' (e.g., I cannot swim).

Front

What is the structure of a sentence using 'be able to' in the future tense?

Back

Subject + will be able to + base form of the verb (e.g., I will be able to attend the meeting).

Front

What is a polite way to ask for permission using 'could'?

Back

Could I borrow your pen?