彼は私の命を助けてくれたので非常に恩がある。の英語

I owe him a great deal because he saved my life.

He put his life in [at] hazard in order to save me.

He saved others―（死んでなら）―at the price of his life―at the cost of his life―at the sacrifice of his life―（死ぬ覚悟でなら）―at the risk of his life―at the hazard of his life―at the peril of his life.

I tried everything to keep him alive.

He saved others at the price of his life.

He saved a man at the price of his life.

She risked her life to save him.

He saved others at the risk of his life―at the price of his life.

He saved others at the price of his life―at the cost of his life―at the sacrifice of his life.

Besides saving his life, he gave the man money.

He risked his life to save her.

I once chanced to save a man's life.

he wanted to save her life at all cost

He saved others at the risk of his life―at the hazard of his life―at the peril of his life.

He saved the boy from drowning, but only at the cost of his own life.

He treats me very well.

He cherishes me a lot.

He pestered me to help.

He is always harping on the favor he did to me when I was a student.

He saved the baby at the cost of his life.

He is very kind since he lent me a lot of money.

He saved her at the risk of his life.

He saved his friend at the risk of his own life.

He kindly helped me.

I will save him at the risk of my life.

He saw himself as the savior of the world.

He saved a drowning child at the risk of his life.

He was praised for saving a life.

He was a friend in need.

She was a great help to me.