發財用英文可以這樣：get rich; make a fortune; make a pile
例句：
他的父親是經營香蕉發財的。
His father made a fortune out of bananas.
他在澳大利亞發了大財。
He made a big fortune in Australia.
短語：
恭喜發財 Wishing you prosperity ; Kung Hei Fat Choy ; GOOD FORTUME ; May you be prosperous
添丁發財 baby bonus ; More sons and more money ; ON OUR MERRY WAY
發財羊 Fazeya
升官發財 Promoting to a higher position ; Promotion rich ; Promotion means money ; to be promoted and gain wealth