I asked a favour of him, but he refused point-blank.

我求过他一次，但他断然拒绝了。

《新英汉大辞典》

We requested that the math teacher explain the puzzle again, but he refused.

我们想让数学老师再解释一遍这个难题，但他拒绝了。

youdao

I was so thankful that I gave him all the money in my purse, but he refused.

我很感激，就把钱包里所有的钱都给了他，但他拒绝了。

youdao

But he refused to do so. He said they were not in condition to fight, and he would not send them.

VOA: special.2009.09.24

He had hoped his longtime business partner John Stark would publish it, but he refused.

VOA: special.2010.01.24

But he refused to let it force him to do what others wished.

VOA: special.2010.01.28

But he refused to say who had given him the gun, saying he feared the consequences.

BBC: Kevin Hutchinson-Foster

But he refused to blame the previous government for the Britain's poor showing in the report.

BBC: Mandelson warns government over cuts 'damage'

They asked the boy to get into the car but he refused and ran home.

BBC: Baberton Mains Hill