你要的公式可以写成
=IF(OR(A1=A2,A2=A3),IF(B2="某值1","A",IF(B2="某值2","B","")),IF(B2="某值1","C",IF(B2="某值2","D","")))
或
=IF(OR(A1=A2,A2=A3),IF(B2="某值1","A","B"),IF(B2="某值1","C","D"))
不明白你的意思呀,有心无力,你把文件或搞个图片出嘛,
=IF(A1=A2,IF(B2="某值","1","2"),IF(A2=A3,IF(B2="某值","1","2"),2))
你要用什么语言输出