湯姆坐在桌前，装作在學習。

Tom sat at his desk, pretending to study.

Source: Tatoeba

Sentence Composition

1 湯姆 Tāngmǔ Tom (name)
=2 坐 Zuò surname Zuo
=2 坐 zuò
  1. to sit
  2. to take a seat
  3. to take (a bus, airplane etc)
  4. to bear fruit
  5. variant of 座 zuò
3 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)
=4 桌 zhuō
  1. table
  2. desk
  3. classifier for tables of guests at a banquet etc
=4 桌 zhuō old variant of 桌 zhuō
5 前 qián
  1. front
  2. forward
  3. ahead
  4. first
  5. top (followed by a number)
  6. future
  7. ago
  8. before
  9. BC (e.g. 前293年)
  10. former
  11. formerly
6 装作 zhuāngzuò
  1. to pretend
  2. to feign
  3. to act a part
7 在學 zàixué to be at school; to be studying
=8 習 Xí surname Xi
=8 習 xí
  1. (bound form) to practice
  2. to study
  3. habit
  4. custom