快速答案
abrir 通过打开来提供入口；ligar 让设备或系统开始运行。
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
abrir
to open
Use abrir for doors, windows, containers, files, and businesses.
ligar
to switch on
Use ligar for devices, lights, machines, and systems that begin operating.
如何选择
- abrir: Choose abrir if the sentence points to doors, windows, containers, files, and businesses.
- ligar: Choose ligar if the sentence points to devices, lights, machines, and systems that begin operating.
例句
Abra a janela, por favor.
Open the window, please.
Ligue a luz, por favor.
Turn on the light, please.
常见误区
A device may use either verb with different meanings: abrir o computador is physically opening it; ligar o computador powers it on.
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 abrir，一次用 ligar。如果两个版本都可以，说明意思怎样变化。