MODALS OF ABILITY
Talk about talents
CAN-COULD
MODALS OF PERMISSION
To request or ask for something
CAN-COULD-MAY
MODALS OF ADVICE
To persuade or convince
SHOULD-OUGHT TO
MODALS OF OBLIGATION
Mandatory
Necessary
POSSIBILITY
Not sure facts:
MAY, MIGHT, COULD, CAN
Trustness about a fact
MUST 100%- HAVE 70% SHOULD 50%