When the teacher came ,she used the comb to tidy her hair 这句话对么?

问题描述:

When the teacher came ,she used the comb to tidy her hair 这句话对么?

两句分开看没有问题,但是when表示当时那个时刻,后半句改成 she was using the comb to tidy her hair.会比较顺.
另外tidy虽然在这儿用没有语法错误,但不是英语中的惯用法.直接说combing her hair就没问题.