Should and must (6º E.P.)

Should and must are modals verbs.

We use must in sentences to give orders when there is no option because it is something you have to do or if we want to tell someone not to do something, we can use it in the negative form:

must not or mustn´t

For example:

You must do your homework

You mustn´t use your mobile phone in class

We use should in sentences to give advice or suggestions or basically to tell someone what would be good in a situation or if we want to tell someone what wouldn´t be good in a situation we can use it in negative form

should not or shouldn´t

For example:

You should eat healthy foods, you shouldn´t eat sweets.