在英语中，可以用下列短语来表示"看情况是否严重"：

Assess the severity of the situation
Determine the gravity of the situation
Evaluate the seriousness of the situation

这些短语的意思是评估或判断情况的严重程度。

举个例子：

The doctor will assess the severity of the patient's injury before deciding on a treatment plan. (医生会评估患者的伤势严重程度，然后决定治疗方案。)
We need to determine the gravity of the situation before we can decide how to respond. (我们需要判断情况的严重程度，然后再决定如何应对。)
It's important to evaluate the seriousness of the situation before making a decision. (在做决定之前，评估情况的严重程度很重要。)