我知道原因，但我不能告诉你。

I know the reason, but I can't tell you.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 知道 zhīdào
  1. to know; to become aware of
  2. also pr. zhīdao
3 原因 yuányīn
  1. cause
  2. origin
  3. root cause
  4. reason

classifier: 個
4 但 dàn
  1. but; yet; however; still
  2. merely; only; just
5 我 wǒ
  1. I
  2. me
  3. my
6 不能 bùnéng
  1. cannot
  2. must not
  3. should not
=7 告诉 gàosù to press charges; to file a complaint
=7 告诉 gàosu to tell; to inform; to let know
=8 你 nǐ you (informal, as opposed to courteous 您 nín)
=8 你 nǐ you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)