前門有人，你去看看是誰。

Someone is at the front door. Go and see who it is.

Source: Tatoeba

Sentence Composition

=1 前門 Qiánmén Qianmen subway station on Beijing Subway Line 2
=1 前門 qiánmén
  1. front door
  2. main entrance
  3. honest and upright approach (as opposed to 后门, back-door or under the counter)
2 有人 yǒurén
  1. someone
  2. people
  3. anyone
  4. there is someone there
  5. occupied (as in restroom)
=3 你 nǐ you (informal, as opposed to courteous 您 nín)
=3 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.)
4 去 qù
  1. to go
  2. to go to (a place)
  3. (of a time etc) last
  4. just passed
  5. to send
  6. to remove
  7. to get rid of
  8. to reduce
  9. to be apart from in space or time
  10. to die (euphemism)
  11. to play (a part)
  12. (when used either before or after a verb) to go in order to do sth
  13. (after a verb of motion indicates movement away from the speaker)
  14. (used after certain verbs to indicate detachment or separation)
=5 看看 kànkan
  1. to take a look at
  2. to examine
  3. to survey
  4. (coll.) pretty soon
=5 看看 kànkàn
  1. (colloquial) pretty soon
  2. (literary) gradually
  3. gradually
  4. placed after a verb or a verb phrase to indicate a trial, interchangeable with 看一下.
  5. pretty soon
  6. to examine and survey; to see
  7. to glance at; to take a quick look at; to have a look-see; to thumb through (a book, etc.)
  8. to see the sights
  9. to visit; to call on
=6 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)
=6 是 shì variant of 是 shì
7 誰 shéi
  1. who
  2. also pr. shuí