Hi there,
Thanks a lot.
Any difference between these twom in tone, politeness and formality?
What is the difference between 'can' and 'may' here?
You cannot teach here without a teaching certificate.
You may not teach here unless you have a teaching certificate.
Thanks
pete
"You cannot teach here without a teaching certificate" is a statement of fact. There is no option. You must have the certificate.
"You may not teach here unless you have a teaching certificate" is politer, and rather less assertive. However, it means precisely the same thing. A certificate is required.
It also implies, slightly, that you
might be able to teach somewhere else without a certificate, but not at the place to which you currently are applying.
Hope this helps!