I shall wirte what I would say, but we are speaking about modals, so I think I have to answer with them...
My solutions:
1. Your teacher is carrying a pile of heavy books. Offer help.
-> Shall I carry that for for?
or Sorry, can I help you?
2. A friend tells you that he/she is thinking of running away from home and joining a circus as a clown. You think this is a silly idea.
-> I think you ought to rethink it. It's a silly idea.
3. A friend boasts that they are taller than you, so they are better at basketball.
-> You might be taller, but I could (or can?!) jump higher.
4. It is hot in the classroom, and you ask your teacher for permission to open the window.
-> May I can open the window?
5. You are having an argument with a friend, and tell him that you don't care what he says.
-> I could'nt care less what you say!
Are these ok?
4 answers
3. You might be taller, but I can jump higher.
4. I may can open the window?
5. I couldn't care less what you say!
is it better that way?
Work on 4!!
and 4. without can? is it just "May I open the window?" ?