例句：He described the difficulties of surviving for four months as a captive.他描述了被俘4個月裏掙扎求生的艱難歲月。The election was held six months ahead of schedule.選舉提前了6個月舉行。The area has been the scene of fierce fighting for three months.這一地區3個月以來不斷髮生激戰。
