MODAL VERBS

SMTH.)
MAY ( YOU ARE ALLOWED/HAVE A PERMIT TO DO SMTH.)
MUST

(YOU HAVE A DUTY/AN OBLIGATION TO DO SMTH.)
NEED ( IT’S NECESSARY FOR YOU TO DO SMTH.)
HAVE TO ( IT’S NOT A DUTY BUT WITHOUT IT YOU CAN’T DO WELL)
SHOULD (IT’S RECOMMENDED TO DO)
BE TO (IT IS DONE DUE TO THE PROTOCOL OR PROCEDURE)

skills).
You may use this presentation (You have my permit).
We must

attend classes online now( It’s our duty).
They need save the data(It’s necessary though it’s not a duty).
We have to use online resources (We can’t have face-to-face talks).
You should memorize the rule (It’s my advice for you).
The lesson is to start at 01.00 PM (According to the timetable).