快速答案
caçar 指狩猎、追捕；cassar 指撤销正式权利或许可。
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
caçar
to hunt
Use caçar for pursuing animals or, figuratively, searching intensely for something.
cassar
to revoke or annul
Use cassar for officially withdrawing a mandate, license, registration, or legal right.
如何选择
- caçar: Choose caçar if the sentence points to pursuing animals or, figuratively, searching intensely for something.
- cassar: Choose cassar if the sentence points to officially withdrawing a mandate, license, registration, or legal right.
例句
A lei proíbe caçar nesta área.
The law prohibits hunting in this area.
O tribunal cassou o mandato.
The court revoked the mandate.
常见误区
They are homophones in Brazilian Portuguese. A caça has a cedilla; a cassação has double s.
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 caçar，一次用 cassar。如果两个版本都可以，说明意思怎样变化。