Spanish language Q&A Forum

Do all of these subordinating conjunctions always require a subjunctive verb to follow?

Entender means understand, but in this example: Ella entiende de arte. - means: She knows about art. Why?

Thank you so much!

The book is as good as the series.

Pienso que desde la serie es femenino, bueno debe ser buena?

I am a bit upset at the fact that I changed my correct answer to an incorrect answer based on a hint given.   I just finished taking a quiz and the question was:  

Sus padres ________ bastante delgados.

Their parents are quite slim.

(HINT: Their parents have always been slim )

 I knew the answer was "son", however I changed it to "tienen" based on the hint given.  Imagine my dismay when I got the question wrong after knowing the correct answer and changing it because because of the hint.   

I understand when the pronoun replace a thing use Los or Las, lo or la but the quiz is using Los to replace a miguel y a Jose.  is the hing that an artricle is in front of the names

Someone else has asked a similar question but in regards to the interchangeability of the tenses, if you were to say "You could have called me the whole evening", can you still say "Podrías/Podías haberme llamado toda la tarde" or do you have to use "Pudiste haberme llamado toda la tarde" because it is in a set time frame now?

Carmen estaba haciendo horas extra para poder comprar una cama...

I'm wondering if it is common to use two infinitives together, as in "para poder comprar"?

Thanks