grammar review (should
had better (Should and ougth to both…
Should and ougth to both expresses advisability. Their meaning ranges in strength from a suggestion.
Had better is close to should and ougth to but had better is usually stronger.
You should study harder
You ougth to study harder
May I and could are used to request permission. They are equally polite, but may I sounds more formal.
Can I is used informally to request permission, especially if the speaker is talking to someone she/he knows fairlu well.
May I borrow your pen?
Would you mind if I is followed by the simple past.
Would you mind is followed by the -ing form of a verb.
Would you mind if I used the phone?
Let's is followed by the simple form af a verb.
Why don't is used primarily in spoken English to make a friendly suggestion.
Shall is used with I or we in a question.
Let's go to a movie
Why don't we go to a movie
Shall I open the window?
The meaning of would you and will you in a polite request is the same. Would ypu is more common and is often considered more polite.
Basically, could you and would you have the same meaning.
Can you is often used informally.
Will you pass the salt?
have got to
Must is usually stronger than have to and can indicate urgency or stress importance
Have to expresses past necessity.
Have got to is informal and is used in spoken English
I have to be home by eigth
I must talk to her rigth away
I have got to go rigth now
Do not have to is lack of necessity.
Must not is prohibition.
We don't have to go to class tomorrow
You must not tell anyone my secret
be supposed to
Be supposed to expresses idea that someone expects somethings to happen.
The game is supposed to begin at 10:00
Was/Were going to talks about past intenttions. Usually, these are unfulfilled intentions.
I'm going to the concert tomorrow.