"Insects eat chocolate."
Translation:Insetos comem chocolate.
A very simple way to remember would be to use a conjugation tree and write it down (that's what I did). So you'd make a column for the English word (I, you, he/her, we, them), a column for Portuguese (eu, você, ele/elas, nós, eles/elas), and a column for the endings (-o, -e, -e, -emos, -em). And then memorize and practice.