你進入我的房間之前都要敲門。

You are always to knock before entering my room.

You are always to knock before you come into my room.

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 進入 jìnrù
  1. to enter
  2. to join
  3. to go into
3 我 wǒ
  1. I
  2. me
  3. my
=4 的 de
  1. of; ~'s (possessive particle)
  2. (used after an attribute when it modifies a noun)
  3. (used at the end of a declarative sentence for emphasis)
  4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂兒的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. dì or di in poetry and songs
=4 的 dī a taxi; a cab (abbr. for 的士 dīshì)
=4 的 dí really and truly
=4 的 dì (bound form) bull's-eye; target
5 房間 fángjiān room

classifiers: 間, 個
6 之前 zhīqián
  1. before
  2. prior to
  3. ago
  4. previously
  5. beforehand
=7 都 Dū surname Du
=7 都 dōu
  1. all; both; entirely
  2. (used for emphasis) even
  3. already
  4. (not) at all
=7 都 dū
  1. capital city
  2. metropolis
=8 要 yāo (bound form) to demand; to coerce
=8 要 yào
  1. to want; to need; to ask for
  2. will; shall; about to
  3. need to; should
  4. if (same as 要是 yàoshi)
  5. (bound form) important
=8 要 yǎo
  1. (archaic) alternative form of 偠 (yǎo)
  2. alternative form of 偠 (yǎo)
  3. used in 要褭／要袅
9 敲門 qiāomén to knock on a door