這裡是圖書館嗎？

Is this a library?

Source: Tatoeba

Sentence Composition

1 這裡 zhèlǐ here
=2 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)
=2 是 shì variant of 是 shì
3 圖書館 túshūguǎn library

classifiers: 家, 個
=4 嗎 má (coll.) what?
=4 嗎 mǎ used in 吗啡 mǎfēi
=4 嗎 ma (question particle for "yes-no" questions)