Question 1

Why do abres and decides end in -es if they come from verbs ending in -ir?

Accepted Answer

For the tú (you) form, regular -ir verbs like abrir (to open) and decidir (to decide) take the ending -es. This is exactly the same ending that -er verbs use for tú! You just drop the -ir and add -es to get abres and decides.

Question 2

Why is descansar left in its full dictionary form instead of changing to descansas?

Accepted Answer

In Spanish, when you have two verbs back-to-back where the first one leads into the second, you only conjugate the first verb. So decidir becomes decides (you decide), but descansar stays in its infinitive form, matching the English "to rest".

Question 3

Does tú always need an accent mark?

Accepted Answer

Yes, when it means "you" as the subject of the sentence, tú must have a written accent mark. This helps tell it apart from tu without an accent, which means "your" (like in tu puerta, meaning "your door").

Question 4

Do I have to say tú at the beginning, or could I just start with abres?

Accepted Answer

You can absolutely just say abres la puerta y decides descansar. In Spanish, the -es ending on the verbs already makes it perfectly clear that "you" are the one doing the action, so the word tú is often dropped unless you want to add emphasis.

Tú abres la puerta y decides descansar.

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