进教室的时候请把帽子摘了。

Take off your hat when you enter a classroom.

Source: Tatoeba

Sentence Composition

1 jìn
  1. to go forward
  2. to advance
  3. to go in
  4. to enter
  5. to put in
  6. to submit
  7. to take in
  8. to admit
  9. (math.) base of a number system
  10. classifier for sections in a building or residential compound
2 教室 jiàoshì classroom

classifier:

=3 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 de "one made of leather" or 跑堂儿的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. or di in poetry and songs
=3 a taxi; a cab (abbr. for 的士 shì)
=3 really and truly
=3 (bound form) bull's-eye; target
4 时候 shíhou
  1. time
  2. length of time
  3. moment
  4. period
5 qǐng
  1. to ask
  2. to invite
  3. please (do sth)
  4. to treat (to a meal etc)
  5. to request
=6
  1. to hold; to grasp
  2. to hold a baby in position to help it urinate or defecate
  3. handlebar
  4. classifier: handful, bundle, bunch
  5. classifier for things with handles
  6. (used to put the object before the verb: + {noun} + {verb})
=6 handle
=6
  1. (obsolete on its own in Standard Chinese) alternative form of (pá, “to scratch”)
  2. a surname
  3. alternative form of (pá, “to scratch”)
7 帽子 màozi
  1. hat
  2. cap
  3. (fig.) label
  4. bad name

classifier:

=8 zhāi
  1. to take; to pick (flowers, fruit etc); to pluck; to remove; to take off (glasses, hat etc)
  2. to select; to pick out
  3. to borrow money at a time of urgent need
=8
  1. (obsolete on its own in Standard Chinese) to harass
  2. (obsolete on its own in Standard Chinese) to initiate
  3. to harass
  4. to initiate
=9 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=9 liǎo
  1. to finish
  2. (used with or after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as or ) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of liǎo)
=9 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=9 liào unofficial variant of liào