"Depois que a novela (acabou), decidi ir para cama." When you had the decision, the fact has already happened. => indicative "Decidi ir para cama depois que a novela (acabasse)." When you had the decision, the fact has not happened yet (and you were not sure it would happen). => subjunctive In this case, you could use the indicative but with other meanings: it would affect the real fact (deciding) and not the future event (going to bed). "Ela me ligou assim que (chegou)." When he called you, the fact has already happened. => indicative "Ela prometeu me ligar assim que (chegasse) em casa." When he promised it, the fact has not happened yet (and you were not sure it would happen). => subjunctive In this case, you could use the indicative but with other meanings: it would affect the real fact (promising) and not the future event (calling).

Obrigado Ryck!

Depois que a novela *acabou*, decidi ir para cama. Ela me ligou assim que *chegou*. There are two sentences here (a main one and a dependented one). Depois que a novela *acabou* /// decidi ir para cama. Ela me ligou /// assim que *chegou*. In that case, we would use won't use verbs in the called "verbos nominais) (Partícipio, gerúndio, infinitivo) Caminhar (to walk) = caminhado (particípio) / caminhar (infinitivo) / caminhando (gerúndio) Chegasse - 1ª pessoa do singular do pretérito imperfeito do subjuntivo Ela prometeu me ligar assim [[que **chegasse** em casa]]. The sentence into brackets can't be used by itself. Therefore, any other verb should be used into the "Forma nominal"

Great. I'm glad you understood.

Thank you Daniel.