B2输入公式=IF(AND(A2=1,LOOKUP(1,0/(A$1:A1<>0),A$1:A1)=2),"对","")下拉即可
如果数据从A1开始,B2输入公式:=IF(AND(LOOKUP(1,0/A$1:A1,A$1:A1)=2,A2=1),"对","")双击填充柄
b2 =IF(COUNTIF(A$1:A1,2)=0,"",IF(AND(LOOKUP(1,0/A$1:A1,A$1:A1)=2,A2=1),"对",""))
直接我不会,用宏很简单