Spanish language Q&A Forum

I think the conjugation of servir in this lesson seems to be incorrect, it leaves off the s in all forms, except in the nosotros form i where it leaves off the root ser.  

Hi, i cannot see any transcript about this reading passage. i can just listen to it. what can be the problem?

Since The main differences between ser and estar include that ser is used for permanent qualities, like your name, your place of origin, and your physical appearance, while estar is used to talk about temporary situations, such as how you’re feeling right now or your location.

So why is SER used in this sentence:  Tú eras muy bueno.  - the person that you are talking to is not always good so it is not a permant state.

Ditto in the following sentence.  You are not always rich so why use SER in the following:  Vosotros erais ricos.

In this sentence:  "Les lazo la pelota y deben apagarla con las dos manos."  

I throw you the ball, and you must stop it with two hands.

I don't understand the use of 'Les" is it referring to 'you"?

…but I’ve just realised why I get confused about when to use the subjunctive after ‘no sé que…’ (‘I don’t know that…’) or ‘no sé qué…’ (‘I don’t know which/what…’), now I realise that I should use the subjunctive in the first case and not in the second. Thank you! 

Why is is teneis que hacer la compra and not tienes que hacer las compra?