"决心做某事"的英文表达是 "to be determined to do something"。
"Determined" 这个词来源于拉丁语 "determinare"，意思是 "决定"、"确定"。"To be determined" 常用来描述一个人坚定的意志和决心。
例句：
She was determined to finish the marathon, no matter how hard it was. (她决心完成马拉松，不管有多困难。)
He was determined to succeed, no matter what the cost. (他决心成功，不管代价有多高。)
She was determined to make a difference in the world. (她决心改变世界。)
"Determined" 这个词来源于拉丁语 "determinare"，意思是 "决定"、"确定"。"To be determined" 常用来描述一个人坚定的意志和决心。
例句：
She was determined to finish the marathon, no matter how hard it was. (她决心完成马拉松，不管有多困难。)
He was determined to succeed, no matter what the cost. (他决心成功，不管代价有多高。)
She was determined to make a difference in the world. (她决心改变世界。)