这个人只顾自己，不顾别人，你要他帮忙，准得碰钉子。

This person only thinks about themselves and doesn’t consider others. If you ask for their help, you’re bound to run into trouble.

Source: Tatoeba

Sentence Composition

1 这个 zhège
  1. (pronoun) this
  2. (adjective) this
2 人 rén person; people

classifiers: 個, 位
3 只顾 zhǐgù to focus solely on; to pay attention only to; to be preoccupied with
4 自己 zìjǐ
  1. oneself
  2. one's own
5 不顾 bùgù in spite of; regardless of
=6 别人 biéren other people; others; other person
=6 别人 biérén others; other people
=7 你 nǐ you (informal, as opposed to courteous 您 nín)
=7 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.)
=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 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)
10 帮忙 bāngmáng
  1. to help
  2. to lend a hand
  3. to do a favor
  4. to do a good turn
=11 准 zhǔn
  1. to allow
  2. to grant
  3. in accordance with
  4. in the light of
=11 准 zhǔn
  1. accurate
  2. standard
  3. definitely
  4. certainly
  5. about to become (bride, son-in-law etc)
  6. quasi-
  7. para-
=12 得 dé
  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
=12 得 dè used in 得瑟 dèse
=12 得 de structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc
=12 得 děi
  1. to have to
  2. must
  3. ought to
  4. to need to
13 碰钉子 pèngdīngzi to meet with a rebuff