be after someone's blood
US /bi ˈæftər ˈsʌmˌwʌnz blʌd/
UK /bi ˈæftər ˈsʌmˌwʌnz blʌd/

1.
想找某人算帳, 對某人非常生氣
to be very angry with someone and want to punish them
:
•
After he crashed her car, she was really after his blood.
他撞壞她的車後,她真的想找他算帳。
•
The boss will be after your blood if you don't finish this report on time.
如果你不按時完成這份報告,老闆會找你算帳的。