A fire fighter -----by burning wood that fell on his back.A

① hurt在做及物动词的时候是主动.vt. 使受伤；使疼痛；使痛心；
hurt后面可加一个对象. 例句：
She fell down the stairs and hurt her leg.
她从楼上跌了下来,摔伤了腿.
② hurt在做不及物动词或者形容词的时候是被动.vi. 感到疼痛；带来痛苦；adj. 受伤的；痛苦的；受损的
hurt后面不可加对象.例句：
About 70 people were badly hurt in the fire.
在那次火灾中大约有70人受重伤.