Modals to express degrees of certainty

What modal do we use when we are 90% sure?

• must

• may

• could

Why do we use modals to express degrees of certainty?

• To speculate based on logic and facts

• to talk about the future

• To express dislikes

• I don't know

What modals do we use to speculate about the present when we are almost sure (90% percent)?

• must, have to, have got to, can't, couldn't, must not

• may, might, could, may not, might not

What modals do we use to speculate about the present when we are less certain (50% percent)?

• must, have to, have got to, can't, couldn't, must not

• may, might, could, may not, might not

Which sentences are speculating about the past and is less certain(50% sure)?

• She must have met with her cousin.

• She might have met with her cousin.

• She may have met with her cousin.

Can we contrat must not? Example: Musn't

• No

• Yes

Who is the president of the US?

• Donald Trump

• Joe Biden

Which sentence speculate about the future and is almost certain?

• We might have an economic development in the next 5 years.

• We should have an economic development in the next 5 years.