受重伤了英语怎么说

受重伤了英语可以用 "severely injured" 来表达。
来源："severe" 是形容词，意思是 "严重的"，"injured" 是动词，意思是 "受伤"。
下面是几个例句：
He was severely injured in a car accident. 他在一场车祸中严重受伤。
She was severely injured when she fell off the ladder. 她从梯子上摔下来时严重受伤。
He was severely injured in the explosion. 他在爆炸中严重受伤。