Expressing Certainty

Expressing Certainty

I’m sure that it’s going to rain this afternoon.It must be him who called.

Study the following explanation

Must is stronger than have to and indicates urgency or stresses importance.

e.g.: They have to attend the Friday Fresh at 7 sharp.

The leader must be a model.

do not have to = lack of necessity

must not = prohibition

e.g.: She doesn’t have to work overtime if

she can finish her work now.

You mustn’t tell anyone what I said.