“铁了心做某事”英文怎么说？

“铁了心做某事”英文怎么说？

set one's heart on (doing) sth.
“铁了心做某事，一心想做某事”

set one's heart on sth.
“非常想得到某物”

英语解释为to want something very much

【例句】

Well, I thought you had your heart set on it.

我还以为你铁了心想买呢。

                        ——选自《摩登家庭》

She had set her heart on becoming a movie star.

她一心想成为电影明星。