must vs. should

Hola Bloguers,

Now, when do we "must" versus "should"? To me, must sounds more like an obligation and should like a recommendation.

Much has been, is and will be said about the matter, but I like to abbreviate as follows:

• Deber (in present tense*) + infinitive verb = must + infinitive verb

Por ejemplo: Debo aprender español (I must learn Spanish)

• Deber (in conditional tense**) + infinitive verb = should + infinitive verb

Por ejemplo: Debería aprender español (I should learn Spanish)

*Present tense: debo, debes, debe, debemos, deben

**Conditional tense: debería, deberías, debería, deberíamos, deberían

Be aware that sometimes we use "deber de + infinitive." The truth is that it does not matter if you use de or not.

Buena suerte y hasta pronto,

Juan