zài / gǔ / dài / wèi / hūn / fū / qù / shì / hòu / tā / jiù / chéng / le / wàng / mén / guǎ

在古代，未婚夫去世后，她就成了望门寡。

In ancient times, after her fiancé died, she became a woman whose fiancé died before marriage.