Anglais example sentences with "rectifying"

Teachers must get tired of rectifying the same mistakes over and over again in their students' papers.
Translate from Anglais to Espagnol

At other times he taught her to play on the pipe, and as she began to breathe into it he snatched it from her, pressed the reeds to his lips and made them sound, under pretence of teaching her and rectifying her errors; but in reality his purpose was to kiss those parts of the instrument which her lips had touched, and thus the pipe became a conductor for his kisses.
Translate from Anglais to Espagnol