“开枪打”常见的英语表达是 “shoot at” 。例如：
The policeman shouted at the suspect to stop and then shot at him when he didn't comply.（警察大声喝令嫌疑人停下，当嫌疑人没有服从时，警察朝他开了枪。）
此外，根据具体语境，“fire at”（向……开火） 也可以表达类似意思。例如：
The soldiers were ordered to fire at the enemy positions.（士兵们接到命令，向敌军阵地开火 。 ）