一SAT语法挑错题.非诚勿扰Among American swimmers,Jason Lezak is an excellent example of an athlete who,while contributing to the success of his teammates,had brought attention to himself.这个句子是完全正确的,但是我不明白while不是连词么?所以contribute是不是应该用动词形式?

问题描述:

一SAT语法挑错题.非诚勿扰
Among American swimmers,Jason Lezak is an excellent example of an athlete who,while contributing to the success of his teammates,had brought attention to himself.
这个句子是完全正确的,但是我不明白while不是连词么?所以contribute是不是应该用动词形式?