在学习古典音乐多年后，汤姆开始演奏爵士了。

Tom started playing jazz after studying classical music for many years.

Source: Tatoeba

Sentence Composition

1 在学 zàixué to be at school; to be studying
=2 习 Xí surname Xi
=2 习 xí
  1. (bound form) to practice
  2. to study
  3. habit
  4. custom
3 古典音乐 gǔdiǎnyīnyuè classical music
4 多年 duōnián
  1. many years
  2. for many years
  3. longstanding
=5 后 Hòu surname Hou
=5 后 hòu
  1. empress
  2. queen
  3. (archaic) monarch
  4. ruler
=5 后 hòu
  1. back
  2. behind
  3. rear
  4. afterwards
  5. after
  6. later
  7. post-
6 汤姆 Tāngmǔ Tom (name)
7 开始 kāishǐ
  1. to begin
  2. beginning
  3. to start
  4. initial

classifier: 個
8 演奏 yǎnzòu to perform on a musical instrument
9 爵士 juéshì
  1. knight
  2. Sir
  3. (loanword) jazz
=10 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=10 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 无 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 了 liǎo)
=10 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=10 了 liào unofficial variant of 瞭 liào