在你這個年紀你應該要更懂事。

You ought to know better at your age.

Source: Tatoeba

Sentence Composition

1 在 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
=2 你 nǐ you (informal, as opposed to courteous 您 nín)
=2 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.)
3 這個 zhège
  1. (pronoun) this
  2. (adjective) this
4 年紀 niánjì age

classifiers: 把, 個
=5 你 nǐ you (informal, as opposed to courteous 您 nín)
=5 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.)
6 應該 yīnggāi ought to; should; must
=7 要 yāo (bound form) to demand; to coerce
=7 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
=7 要 yǎo
  1. (archaic) alternative form of 偠 (yǎo)
  2. alternative form of 偠 (yǎo)
  3. used in 要褭／要袅
=8 更 gēng
  1. to change or replace
  2. to experience
  3. one of the five two-hour periods into which the night was formerly divided
  4. watch (e.g. of a sentry or guard)
=8 更 gèng
  1. more
  2. even more
  3. further
  4. still
  5. still more
9 懂事 dǒngshì
  1. to grow beyond the naivete of childhood; to be aware of what is going on in the world
  2. (esp. of a child) sensible; thoughtful; intelligent