Modal of Ability

Front

What is the modal verb used to express inability in the present?

Back

can't

Front

What is the modal verb used to express past ability?

Back

could

Front

How do you express inability in the past?

Back

couldn't

Front

What modal verb indicates a present ability?

Back

can

Front

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

Back

'Can' is used for present ability, while 'could' is used for past ability.

Front

How would you express that someone is not able to do something in the present?

Back

Use 'can't'.

Front

What is the structure for expressing ability in the past?

Back

Subject + could + base form of the verb.

Front

How do you express that someone was able to do something in the past?

Back

Use 'was able to' or 'were able to'.

Front

What is the negative form of 'can'?

Back

can't

Front

Provide an example of 'can' in a sentence.

Back

I can swim.