你不觉得你应该给他们写一封感谢信吗?

Don't you think you ought to write them a thank-you note?

Source: Tatoeba

Sentence Composition

=1 you (informal, as opposed to courteous nín)
=1 you (Note: In Taiwan, is used to address females, but in mainland China, it is not commonly used. Instead, is used to address both males and females.)
2 不觉 jué unconsciously
=3
  1. to obtain
  2. to get
  3. to gain
  4. to catch (a disease)
  5. proper
  6. suitable
  7. proud
  8. contented
  9. to allow
  10. to permit
  11. ready
  12. finished
=3 used in 得瑟 se
=3 de structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc
=3 děi
  1. to have to
  2. must
  3. ought to
  4. to need to
=4 you (informal, as opposed to courteous nín)
=4 you (Note: In Taiwan, is used to address females, but in mainland China, it is not commonly used. Instead, is used to address both males and females.)
5 应该 yīnggāi ought to; should; must
=6 gěi
  1. to
  2. for
  3. for the benefit of
  4. to give
  5. to allow
  6. to do sth (for sb)
  7. (grammatical equivalent of )
  8. (grammatical equivalent of )
  9. (sentence intensifier)
=6
  1. to supply
  2. to provide
7 他们 men they; them
=8 xiě to write
=8 xiè used in 写意 xiè
9
  1. one
  2. single
  3. a (article)
  4. as soon as
  5. entire; whole; all; throughout
  6. "one" radical in Chinese characters (Kangxi radical 1)
  7. also pr. yāo for greater clarity when spelling out numbers digit by digit
=10 Fēng surname Feng
=10 fēng
  1. to confer
  2. to grant
  3. to bestow a title
  4. to seal
  5. classifier for sealed objects, esp. letters
11 感谢信 gǎnxièxìn letter of thanks; thank-you letter
=12 (coll.) what?
=12 used in 吗啡 fēi
=12 ma (question particle for "yes-no" questions)