没有什么区别。cheated是cheat的过去式，过去分词。cheat意思是欺骗，例句：He had been cheating the taxman but it was years before he was found out.
他过去一直在欺骗税务部门，只是多年以后才被查出来。
常用短语：cheat sb (out) of sth
（尤指用不诚实或不正当的手段）阻止某人得到某物
to prevent sb from having sth, especially in a way that is not honest or fair
