to see red 这个短语的意思是大怒，狂怒。
- The teacher will see red when he finds out you haven't done your homework again! He'll give you detention.
- My mum saw red when I came in late for dinner.
- I saw red and shouted when the boss complained about my work for the third time today.
值得注意的是，如果你想说一个人很容易发火，可以用to fly off the handle 这个短语。
- When Simon told me he was going out for the third night in a row, I really flew off the handle and shouted at him.
