1、四十的英文：forty。2、参考例句：Among this money there was one forty-sou piece。里面有一个值四十苏的钱。Younger/older than forty,fifty,etc years of age。不足[已过]四十、五十岁等.Mr. Smith is still in his forties.***先生才四十几岁。a steamer of 40 feet beam。船幅四十呎之轮船。