Завдання

 1. The rule

Logical Assumptions (Deduction)
Must	Positive deduction about the present or future. (We are sure that something is true)	John must be at the dentist’s: he was complaining about toothache. She's wearing a wedding ring. She must be married.
Can’t/couldn’t	Negative deduction about the present or future. (We are almost sure that something is not true)	The 6.30 train to Liverpool can’t be leaving yet: it’s only 6:10. The lights are off in the house. They can't/ couldn’t be home yet.

 

Prohibition
Mustn’t Can’t	It is forbidden to do sth/you are not allowed to do sth/it is against the rules/law to do sth	We mustn’t enter this room. You can’t use this equipment. You mustn’t smoke in this area.