adjective + NOT TO + infinitive (be careful not to disturb them)
C2 in the English Grammar Profile, point 230 in the category of MODALITY is defined as:
‘BE’ + ADJECTIVE + ‘NOT’ + ‘TO + infinitive for emphasis
exceed
may not
In the English Grammar Profile, B1 point 94 in the category of MODALITY is defined: ‘may’ negative PELIC STUDENT EXAMPLE: However, you may not deny that you can not buy happiness even if you have too much money. Korean male, level 4 writing class. An iWeb search for: may_VM not _V*I 1 MAY NOT KNOW 28529 2 MAY NOT WORK 22681 3 MAY NOT WANT 17165 4 MAY …
must not
In the English Grammar Profile, the negative form of ‘must’ in the category of MODALITY appears at two levels. Point 21 is A2 and just general form. Point 149 is B2 and is defined: USE: RULES negative forms of ‘must’ to talk about what is not permitted. *It is not clear what type of usage …