Modals of Ability and Certainty

Choose whether the underlined word is a modal of certainty or ability.

I can read and speak English fluently.

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

He didn’t study so he couldn’t get a good grade.

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

If you have not eaten lunch yet, you must be hungry.

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

The boy can play football very well.

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

There is a lot of traffic so Jeff might be late.

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

We’ve waited a long time! The bus has to be close.

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

He has to work so he won’t be able to come to the birthday party.

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

He is eating meat so I’m sure he can’t be an omnivore.

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

The cheetah is the fastest land animal. It can run 120 kilometers an hour

• ability

• certainty

Choose whether the underlined word is a modal of certainty or ability.

Victoria is so tanned. She must have spent a lot of time in the sun.

• ability

• certainty