en_tn/jer/38/28.md

the courtyard of the guard

This was an open area attached to the king's palace that was surrounded by buildings and in which they kept prisoners. See how you translated this in Jeremiah 32:2.

until the day Jerusalem was captured

This can be translated in active form. Alternate translation: "until the day that the Babylonian army captured Jerusalem" (See: rc://en/ta/man/jit/figs-activepassive)