【一】 She is the first girl to gain the prize.
=She is the first girl who has gained the prize.
备注:被作定语的不定式修饰的名词前面如果有序数词限定，表示不定式动作在谓语动词动作之前发生，相当于完成体的定语从句。
【1】 She is the first girl to gain the prize.
=She is the first girl who has gained the prize.
备注:主句为一般现在时态，对应现在完成时态定语从句。
【2】 She was the first girl to gain the prize.
=She was the first girl who had gained the prize.
备注:主句为一般过去时态，对应过去完成时态定语从句。
【二】Zhao Wenying, a 65-year-old woman from Zhejiang Province, recently became the world's oldest person ' to pass' the professional Rubik'sCube(魔方) B-level exam
备注:被作定语的不定式修饰的名词前面如果有最高级限定，表示不定式动作在谓语动词动作之前发生，相当于完成体的定语从句。
Zhao Wenying recently became the world's oldest person ' to pass' the professional Rubik'sCube(魔方) B-level exam
=Zhao Wenying recently became the world's oldest person who had passed the professional Rubik'sCube(魔方) B-level exam
