“到一半”造句
她向下走
到一半时，听到了响声。
She was halfway down when she heard the noise.
烟抽
到一半，她突然一阵猛咳。
Halfway down the cigarette she had a fit of coughing.
一名39岁的马拉松参赛者跑
到一半时瘫倒在地，没过多久就死了。
A thirty-nine-year-old competitor collapsed half-way through the marathon and died shortly afterwards.