快速答案
brincar 是自由玩耍，jogar 用于游戏和运动，tocar 用于演奏乐器。
可靠的方法是先判断这个词在句子里的功能，再翻译。
每个词的作用
brincar
to play for fun
Use brincar for free play, toys, make-believe, or joking.
jogar
to play a game or sport
Use jogar for games, matches, and sports with rules.
tocar
to play an instrument
Use tocar for producing music on an instrument.
如何选择
- brincar: Choose brincar if the sentence points to free play, toys, make-believe, or joking.
- jogar: Choose jogar if the sentence points to games, matches, and sports with rules.
- tocar: Choose tocar if the sentence points to producing music on an instrument.
例句
As crianças brincam no quintal.
The children play in the backyard.
Nós jogamos futebol aos sábados.
We play soccer on Saturdays.
Ela toca violão muito bem.
She plays the guitar very well.
常见误区
Do not translate every use of “play” with brincar: Brazilian Portuguese normally says jogar futebol and tocar piano.
放到语境中练习
从你的真实生活中选一个句子，写两遍：一次用 brincar，一次用 jogar。如果两个版本都可以，说明意思怎样变化。