A turbine is provided which is simple in structure and which allows a gas now passage to be formed using a CMC over a wide range while suppressing thermal stress on turbine stator vanes, thereby achieving further improved jet engine performance and reduced fuel consumption. The turbine includes a turbine stator vane formed of a CMC and including an outer band portion and an inner band portion extending continuously from an airfoil portion is hooked to a hanger made of a metal material with a front portion and a rear portion of the outer band portion engaged with a front hook portion and a rear hook portion of the hanger, respectively, and the hanger in turn is attached to a turbine case made of a metal material.