Spanish language Q&A Forum

The correct answer here shows both verbs in imperfect tense. Why is using preterite in the first clause and imperfect in the second clause incorrect? The lesson shows both examples in the past tense.

Hello,

I am really confused, why abrir is irregular?

Hello, I’ve really struggled with this lesson. I’ve finally figured out that it is the verb itself that decides whether or not you use ‘a’ or ‘de’. It just wasn’t clicking. So first I will start learning which preposition follows specific verbs, then I will come back to this. Your lesson is about learning that ‘a+el’ is ‘al’ and ‘de+el’ is ‘del’. And I understand that completely. I don’t recall if there is a lesson about correct propositions after verbs. Please let me know if there is. Thank you!

The sentence, "Fernando will begin complaining when he arrives".  If he always complains about everything, would it be "cuando llega"?

The last subsection, Difference between todo/-a and cada, explains something entirely different.

I'm curious what the content of the missing chapter should be.

In a previous question, mover was used in a present tense (Ella mueve...). However, in this quiz, mover was used in a reflexive tense (El perro se mueve). How do we know when to use or not use the reflexive tense? 

In the sentence " solo te estoy pidiendo tu opinión"   why is there a "te" in the sentence.

Also the other sentence using preguntar verb