< Portuguese Grammar

dever: must, ought

must dever
I must eu dev o
you/he/she must você/ele/ela dev e

Complete conjugation.

DEVER usually gets combined with another verb immediately following it to form powerful expressions.

dever + ser Ela deve sera apaixonada. She must be in love.

dever + ir Você deve ir. You should go.

dever + ter Deve ter sido amor. Must have been love.

dever + voltar Você deve voltar logo. You should return soon.

deveria Eu deveria ter ficado. I ought to have stayed.