+ - Example
should ---> shouldn't ---> example: You shouldn't go there by yourself.= Als jij vindt dat iets (niet) zou moeten. Advies geven of iets afraden
ought to ---> ought not to ---> example: You ought not to use curse words.
= Formeler dan should
must ---> musn't ---> example: You mustn't share my secret.
= Krachtiger / dringender dan should
have / has to ---> don't / doesn't have to ---> example: We don't have to do homework.
= Uitdrukken van zekerheid, noodzaak of verplichting. Om te zeggen dat iets moet van iemand anders.