<b>“铁了心做某事”英文怎么说？</b>
<blockquote><b>set one's heart on (doing) sth.</b><br>
<b>“铁了心做某事，一心想做某事”</b><br>

</blockquote>

<blockquote><b>set one's heart on sth. </b><br>
<b>“非常想得到某物”</b><br>

</blockquote>
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英语解释为to want something very much<br>
【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。