晚飯後你不可以外出。

You must not go out after dinner.

Source: Tatoeba

Sentence Composition

1 晚飯 wǎnfàn
  1. evening meal
  2. dinner
  3. supper

classifiers: 份, 頓, 次, 餐
2 後 hòu
  1. back
  2. behind
  3. rear
  4. afterwards
  5. after
  6. later
  7. post-
=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 不可以 bùkěyǐ may not
5 外出 wàichū
  1. to go out
  2. to go away (on a trip etc)