Excelfunction? 哪一个使用

我有一个colums,它具有类似的价值

1,2,3,4,5 or 1,2 or 3,4 or 5 only (many rows) i want to find/convert if value =1,2,3,4,5 then created new colum(Myname) -"TEXT1" if value = 1,2 then value of newly created colum = "TEXT2) if value=3,4 then value = "text3" if value = 5 then "text 4" 

哪些Excelfunction,我应该使用? 或任何指针