1、四十 - forty英[ˈfɔːti]美[ˈfɔːrti]。

2、例句：My car does forty miles to the gallon.我的车每加仑汽油跑四十英里。He was a big man in his forties, smartly dressed in a suit and tie.他是一个四十几岁的高大男子，穿着西服打着领带，很精神。