Modals of deduction (present)

When we're sure about something is true, we use.

• Must

• Can't

• Could/Might

When we're sure something ISN'T TRUE, we use

• Must

• Can't

• Could/Might

When we aren't so sure, we use ___________ or ____________ to express doubt.

• Must

• Can't

• Could/Might

They're speaking Spanish, so they __________ from Argentina, I suppose.

• could / might

• can't

She ___________ love cats-she has 20.

• can't

• must

You _________ want more! You've already eaten 2 whole pizzas!

• can't

• must

I think that man __________ need our help. I don't think he can swim.

• must

• might / could

You've been working all day. You _________ be really tired.

• must

• might / could

He's a little older than John, but he ___________ know him. I think they went to the same school.

• can't

• might / could

Tim ________ feel awful. He studied really hard, but he still failed the test.

• can't

• must