No olvidar.....
No olvidar el paraguas antes de ir casa. Don't forget the umbrella before going home. Thank you
6 Answers
Yes, Eddy, I saw this the other day....
The infinitive ... is frequently used, especially in print and online rather than verbally, to give commands to no one person in particular. It is seen most commonly on signs and in written instructions.
Examples: No fumar. (No smoking.) Hacer clic aquí. (Click here.) No tocar. (Do not touch.) Sazonar los frijoles y servirlos en un plato. (Season the beans and serve them on a plate.) Colgar el teléfono y esperar. (Hang up the telephone and wait.)
I have noticed more and more negative commands using the infinitive.


Here is a famous cortometraje from Spain, "Diez Minutos", by Alberto Ruiz Rojo. You'll notice that that the woman who works in the customer service department (Nuria) uses this construction a lot in speaking to Enrique. For example, "Indicarle que puede Ud. comprobar en su teléfono..." I'm not used to that construction either, but we just studied this corto in film class.
You need to use the imperative construction. The imperative informal singular would be:
No te olvides el paraguas antes de regresar a casa.
No olvides (negative command)
Just to be clear...you can say this both ways:
1) No te olvides
2) No olvides
El "no olvides que..." y el "no te olvides que" significan lo mismo.