用法：用于较亲朋友间，表示同意他的看法。
使用地位：平等或是上级对下级说话。
Scene 1:
Betty: That was a tough test. 贝蒂：好难的考试啊！
Bob: You're telling me! 鲍勃：就是呀！
Scene 2:
Betty: Our new teacher's so good-looking. 贝蒂：我们的新老师长得很好看。
Jane: You're telling me. 珍妮：就是啊！
Scene 3:
Bob: It's really humid. 鲍勃：湿气很重哟！
Betty: You're telling me. 贝蒂：是啊！
注释： You are telling me 不适宜用在像一流大饭店这样的场合，故在此种情形下，服务员和客人对话应该如此：
Guest: It's really cold, isn't it?
Waiter: It certainly is./ Yes, it is.