tell过去式和过去分词

　　例句：

　　I've told you time after time not to do that.

　　我一再告诉过你不要干那件事。

　　Well? Are you going to tell us or not?

　　嗯？你想不想告诉我们？

　　Only time will tell if the treatment has been successful.

　　只有时间才能证明这种疗法是否成功。