区别burned burnt

首先在词性上就有区别了
burned指燃烧过的东西n.焦化 烧焦之类
burned their lousy clothes.
烧掉他们满是虱子的衣服。

He is severely burned.
他被严重烧伤了。

Her cheeks burned red.
她的两颊通红。

I burned the toast.
我把土司烤焦了。

She burned herself badly.
她受了严重的烫伤。

burnt单纯指可以燃烧的性质
burnt-out fabric
烂花布

Blackened by burnt cork.
用烧焦的软木涂黑的

He burnt the meat.
他把肉烧焦了。

The candle burnt out.
蜡烛烧完了。

The milk has burnt.
牛奶煮糊了。