1、四十的英文：forty。2、參考例句：Among this money there was one forty-sou piece。里面有一個值四十蘇的錢。Younger/older than forty,fifty,etc years of age。不足[已過]四十、五十歲等.Mr. Smith is still in his forties.***先生才四十幾歲。a steamer of 40 feet beam。船幅四十呎之輪船。