This is my injury from that time. It hurt so much I thought I would die.
This is where I got hurt from the accident. It hurt so much I thought I might die.
This is =これは
Injury = 傷
Where i got hurt = 怪我したところ
Accident = 事故
Hurt = 痛い
So much = ほど
I thought I would die = 死ぬかもと思った
I thought I might die = 上記と同じような意味ですが、might = たぶん なので、mightの方が50%死ぬ、50%生きていくという感じです。