shout at sb (as to warn him of sth) ❍ 说理的首先一个方法，就是重重地给患病者一个刺激，向他们～，说：“你有病呀！”使患者为之一惊，出一身汗，然后好好地叫他们治疗。(《毛泽东选集》790)The first thing to do in this reasoning process is to give the patient a good shake-up by shouting at him，“You are ill!” so as to administer a shock and make him break out in a sweat,and then to give him sincere advice on getting treatment.
大喝一声dà hè yī shēnɡ
喝：大声喊叫。形容大喊一声，以使对方震惊。with a thunderous shout,jolt sb. and talk to him sharply, shout at sb.