Modal Verbs (Ability & Possibility)

Can và Could both means an "ability" (khả năng làm gì đó).

What's the difference between Can and Could?

• Can is used in Present Tense

• Could is used in Past Tense

• A & B are correct

• A and B are wrong

She ...... play the piano. She is a musician.

• cannot

• can

• mustn't

• can't

....... you help me? This exercise is really hard.

• Should

• Can

• Would

• Can not

When he was young he ________ dance all night long.

• can

• may

• could

• I don't know

Kate ....... swim very well, she is a great swimmer.

• should

• can

• mustn't

• can't

______ you speak Chinese?

• Can

• Might not

• Was

• Is

You _____ be the winner. You didn't get all the answers right.

• may not

• can't

To describe someone's ABILITY, along with Can and Could,

which other phrase can we use?

(a)  

She ________ speak English very well. She has learned the language since she was five.

• is able to

• was able to

• can not

To describe a POSSIBILITY, which are the words we can use?

• Might, May, Could

• Might, May, Could, Can

• Might, May

• Should, Could