英语翻译
A”favor"isdoingsomethingforanotherpersonthatthedoerhasnoobligationtodo,Forexample,goingtothestoreforafriendormailingsomeletterssothatasickfriendwouldn'thavetogooutintherain.Sinceafavorinvolvesdoingsomethingextra,itre-quiresanexpressionofthanks.Itisappropriatetothankthepersonagainafterthefavorhasbeendone.Fora"bigger"favor,thatis,oneinvolvingmoretimeoreffort,thebeneficiarymayalsogiveagifttothedoerofthefavor.Forsmallthings,suchasholdingopenadoor,apersonsimpiysays"Thanks".