Understanding Modals: 'Could' Usage

This video tutorial explains the use of modals, focusing on 'could' as a modal of ability. It covers how 'could' is used to express past abilities, the structure of sentences with modals, and provides examples. The video also discusses using 'could not' for past inabilities and how to form questions with 'could'. An interactive exercise is included to practice forming sentences with 'could' and 'couldn't'.

What is the primary function of a modal in a sentence?

• To describe a noun

• To modify an adjective

• To add extra meaning to a verb

• To replace the main verb

Which modal is used to express ability in the past?

• Can

• Will

• Could

• Should

What does the modal 'could' indicate?

• Hypothetical ability

• Past ability

• Present ability

• Future ability

Which of the following is an example of using 'could' to describe a past ability?

• I could swim when I was five.

• I could swim if I wanted to.

• I could swim tomorrow.

• I could swim now.

What is a base verb?

• A verb with no ending added

• A verb with an -s ending

• A verb with an -ing ending

• A verb with an -ed ending

Which sentence correctly uses 'could' to express a past ability?

• I could to play the guitar.

• I could play the guitar.

• I could playing the guitar.

• I could played the guitar.

How do you express inability in the past using modals?

• Using 'should not'

• Using 'could not' or 'couldn't'

• Using 'can not'

• Using 'will not'

Which sentence shows the correct use of 'couldn't'?

• I couldn't go to the party.

• I couldn't going to the party.

• I couldn't went to the party.

• I couldn't to go to the party.

What is the correct negative form of 'could'?

• Could no

• Couldn't

• Could not

• Couldn't not

How do you form a question about past ability using 'could'?

• Could you swam?

• Could you swim?

• Could you swimming?

• Could you to swim?