2. .CAN. .COULD.
• We use can to express • We use could to
ability, possibility and express ability in the
premission and to make past, possibility and to
request. make request.
• I can do the homework • Could you please
on Sunday´s morning. answer the phone?
3. .SHOULD. .HAVE TO.
• We use should to give • We use have to express
advice. lack of obligation.
• I think you should • You have to study hard.
speak with her.
4. .MUST. .MUSN´T.
• We use must to express • We use musn´t to
an abligation. express prohibition.
• You must use your • You musn´t use your
keypad to send a phone on class.
message.
5. .MAY. .MIGHT.
• We use may to show • We use might to show
possibility in the possibility in the
future, to ask for and future.
give or deny permission
in formal speech. • He might go to Paris
tomorow
• I may finish tomorrow.
