Modal Verbs: Can and Could

These flashcards cover the essential concepts of modal verbs 'can' and 'could', their definitions, usage, and common mistakes associated with them.

What are modal verbs?

Special helper verbs that express ability, possibility, permission, or requests in sentences.

Examples of common modal verbs.

"Can" and "Could" are the most frequently used modal verbs for ability and polite requests.

How do modal verbs change with he/she/it?

Modal verbs do not change form with he/she/it (e.g., He can, not He cans).

Using 'Can' for ability.

Expresses ability - e.g., 'I can wash the dishes' shows skill or capability.

How to ask for permission using 'Can'.

Informal way to ask if something is allowed - e.g., 'Can I vacuum the living room?'.

What does 'You can help…' indicate?

Grants someone the ability to do something.

Using 'Could' for past ability.

Describes what you were capable of doing in the past - e.g., 'When I was younger, I could clean the windows.'

Polite requests using 'Could'.

More formal and respectful than using 'can' - e.g., 'Could you help me with the laundry?'.

Comparison of 'Can' and 'Could' in tone.

'Could' has a softer tone, making it suitable for polite conversations.

What is a common household chore involving a vacuum?

Vacuuming the floor is using a vacuum cleaner to clean carpets and floors.

Define 'Mop the floor'.

Use a wet mop to clean hard floors.

How should you fill in the blank: I _____ (can/could) mop the floor every Saturday?

The correct answer is 'can'.

Common mistake with 'Can'.

Do not add 'S' to 'can' - Correct: 'He can cook' Wrong: 'He cans cook'.

When to use 'Could' for past ability.

Use 'Could' to express abilities in the past, e.g., 'I could swim when I was young.'

Real-life example of using modal verbs.

Showing how modal verbs help in family conversations, e.g., 'Can you help with the dishes?' 'Could I do it after homework?'.

Summary of 'Can'.

'Can' expresses present/future ability or permission.

Summary of 'Could'.

'Could' expresses past ability or polite requests.