Breakdown of Él coloca un soporte ergonómico, de manera que su espalda está recta.
él
he
de
from / of
un
a, an (masculine)
estar
to be (location/state)
Questions & Answers about Él coloca un soporte ergonómico, de manera que su espalda está recta.
Why does this sentence use the indicative está instead of the subjunctive esté after de manera que?
The phrase de manera que can be followed by either mood depending on the meaning. When followed by the indicative (like está), it expresses a factual consequence or result: he places the support, and as a result, his back is straight right now. If it used the subjunctive (esté), it would express purpose or intention: he places it so that his back will be straight.
Is there any difference between using de manera que and de modo que in this sentence?
No, they are totally interchangeable here. Both de manera que and de modo que mean "so" or "in such a way that." They also follow the exact same rule: use the indicative for a factual result (consequence), and the subjunctive for a purpose or goal.
Could I use pone instead of coloca here?
Why do we use está rather than to say his back is straight?