① reduce vt. 减少；缩减；约束，限制；使降低，降职；
使……变为(某个状态)(回归课本P12)
reduce...to...把……减少到……,reduce...by...把……减少了……,reduce sb.to doing sth.迫使某人做某事；使某人不得不做某事,reduction n.缩小，减少；缩版,make a reduction减价
【归纳总结】
【例句探源】
①The expenses have been reduced to 1,000 yuan one month.
每月的费用已降到1,000元。
