ought to, should, must (strong advice): |
You should not eat hamburgers.
They are not
good for your health. |
 |
had better (not) + inf. without to: You had better phone her.
If I were you I would...: If I were you I wouldn't go out. It's pouring
Why don't you...? You look tired. Why don't you sit down
for a while?
...
