小学时班上的学习委员总爱向老师打小报告，是我们班的“正义使者”。比如当她发现我上课玩卡牌时，下课后就会向老师举报我的“罪行”。我相信每个班级都会有这样一位同学。“打小报告”用英语怎么说呢？

可以用 Rat sb. out

英文解释：to tell a parent, teacher, etc. about sth wrong that another child has done （向家长、教师等）告发，告密

I can't believe you ratted me out to the teacher—I’ll never tell you anything again!

我简直不敢相信你居然向老师打我的小报告—我不会再告诉你任何事情了！

Who do you think ratted us out?

你觉得是谁把我们捅出去的？

-What? Why? Who are you calling?

什么 怎么了 你给谁打电话呢

You're gonna rat me out to Howard, aren't you?

你要跟霍华德打小报告是不是

You're such a snitch, no wonder I don't like you.

居然还会告密 难怪我一直看你不顺眼

-Whoa, I'm calling my dad, okay?

我是打给我爸好吗（你这么紧张干嘛！）

He's got experience dealing with pregnant ladies

他对孕妇们的事很有经验

And experience with crazy ladies

对付疯婆子也很有经验

拓展：

Snitch：

To snitch on a person means to tell someone in authority that the person has done something bad or wrong.