Modal verbs

I _________ run very fast.

• can

• may

We use MUST for:

• Permission

• Obligation

• Possibility

You __ swim here. It's forbidden.

• must

• mustn't

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

• can
• must

This modal verb means that an action is going to happen in the future

• might

• will

John isn’t in class today. I think he ............ sick.

• might

• might be

This ............be my backpack -Mine is black.

• must

• can't

We use MAY/MIGHT for:

• Possibility

• Obligation

Don't forget to take an umbrella. It _____ rain later.

• Can

• Might

I _______ jump.

• can

• should