Anomalous Verbs III
 
Ought To

Should
Afirmativa: I ought to go.

Negativa: I ought not to go.

Interrogativa: Ought  I to go?

Expressa:

permissão: May I come in?

possibilidade: It may rain tonight.

 

Afirmativa: I should go.

Negativa: I should not go. (shouldn't)

Interrogativa: Should I go?

Expressa:

conselho: You should visit your grandmother.

dever: You should do your homework.
 

Used To

Afirmativa: He used to swin.

Negativa: He didn't used to swin.

Interrogativa: Did he used to swin?

Used to expressa um hábito passado.
  To be used to: estar acostumado a

He is used to swimming in the morning.