I can speak Englsih.
He
was able to
achieve that thanks to Sherpa Norgay.
From the top they
could
see
thousands of miles away.
It's a rule.
You have to wear a tie to the party.
It's obligatory.
You must wear a tie to the party.
It's a strong believe.
You ought to wear a tie to the party.
Formal request.
You should wear a tie to the party.
Recommendation.
You can wear a tie to the party.
It's your choice.
You don't have to wear a tie to the party.
It's not an obligation.
NOT ADVICED You shouldn't wear a tie to the party.
It's not recommended.
You can't wear a tie to the party.
Can I borrow your tomorrow?
Casual
Could I (possibly) borrow your car tomorrow?
May I borrow your car tomorrow?
Would you mind if I used your car tomorrow?
Politer
Can you help me?
Casual
Could you help me?
Would you help me?
Woud you mind helping me?
Politer
ABILITY
to talk about a
specific
achievement
Modal Verbs
SPECULATING
PAST
FUTURE
OBLIGATION / ADVICE /
PROHIBITION
PERMISSIONS AND
REQUESTS
ASK FOR
PERMISSION
REQUESTS
ABILITY Edmund Hilary could climb very well.
In 1953, they managed to get to the top of Mount Everest
Men must not /musn't wear a tie to the party. It's forbidden.FORBIDDEN
Luckily I found my phone, thought I might have lost it.
Luckily I found my phone, I thought it could have been stolen.
I suppose I might have left my phone at home before leaving.
I guess I could have left my phone at home, but I'm not sure.
I think I may have left my phone at home. Let's go check.
I must have left my phone at home. I don't remember taking it.
I can't have left my phone at home, I had it with me a moment ago.
They can't be home, they said they'd be away this week.
They might be at home, but I don't know.
They could be at home. Let's go check.
They may be at home, they're usually are at this time of the day.
They should be at home, they didn't say they were leaving.
They must be at home, their car is outside and they never leave without it.
NOT SURE
PROBABLE
LOGICAL
INVITATIONS Would you like to come to the party?
OFFERS Would you like anything to eat?
DID NOT HAPPEN
OBLIGATORY
Men must wear a tie to the party.
ADVICED
OPTIONAL
SURE
CAN'T BE SURE