你以為自己醒着，但其實你可能是在做夢。

You think you're awake, but you may, in fact, be dreaming.

Source: Tatoeba

Sentence Composition

=1 你 nǐ you (informal, as opposed to courteous 您 nín)
=1 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.)
2 以為 yǐwéi to think; to believe (often with the implication that the belief is mistaken – unless referring to one's own current belief)
3 自己 zìjǐ
  1. oneself
  2. one's own
4 醒 xǐng
  1. to wake up
  2. to be awake
  3. to become aware
  4. to sober up
  5. to come to
=5 着 zhāo
  1. a move in chess (Taiwan pr. zhuó)
  2. trick; tactic
  3. (dialect) okay; all right
  4. (dialect) to put in; to add
=5 着 zháo
  1. to touch
  2. to come in contact with
  3. to feel
  4. to be affected by
  5. to catch fire
  6. to burn
  7. (coll.) to fall asleep
  8. (after a verb) hitting the mark
  9. succeeding in
=5 着 zhe aspect particle indicating action in progress or ongoing state
=5 着 zhuó
  1. to wear (clothes)
  2. to contact
  3. to use
  4. to apply
6 但 dàn
  1. but; yet; however; still
  2. merely; only; just
7 其實 qíshí actually; in fact; really
=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.)
9 可能 kěnéng
  1. might (happen)
  2. possible
  3. probable
  4. possibility
  5. probability
  6. maybe
  7. perhaps

classifier: 個
=10 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=10 是 shì variant of 是 shì
11 在 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
12 做夢 zuòmèng
  1. to dream
  2. to have a dream
  3. fig. illusion
  4. fantasy
  5. pipe dream