語数が多い場合、意味をすっきりさせるために語順を変えるケース
his wife whose sister was elected as a city delegate を
How excited the student was ! のthe student の部分に代入すると、本来なら
How excited his wife whose sister was elected as a city delegate was!
となりますが、この場合 How excited と was の間隔が空きすぎて
意味がすっきりしないので、his wife の直後に was を移動させた表現です。
How excited his wife was, whose sister was elected as a city delegate !
このように語数が多い場合、語順を変えるケースはたくさんあります。