很多词典把tell sb. about sth.作为一个短语，例如：
tell sb. about sth.
No one had told them about the drug's side effects.没人告诉过他这种药品的副作用。
（《朗文高级英语应试词典》tell 词条）
在 I've found three really unusual sports events to tell you about 这个句子中，to tell you about 是动词不定式短语，作events 的定语。【注意】要说 three ... events，不能说：three ... event
