解：?$(1)\frac {2023}{2024}=1－\frac {1}{2024}，$??$\frac {2024}{2025}=1－\frac {1}{2025}$?
?$\frac {1}{2024}＞\frac {1}{2025}，$?所以?$1－\frac {1}{2024}＜1－\frac {1}{2025}$?
所以?$\frac {2023}{2024}＜\frac {2024}{2025}$?
?$(3)(－\frac {4}{5})－(－\frac {5}{6})$?
?$=(－\frac {4}{5})+\frac {5}{6}$?
?$=\frac {25}{30}－\frac {24}{30}$?
?$=\frac {1}{30}＞0$?
所以?$－\frac {4}{5}＞－\frac {5}{6}$?
