找出下列句子中的错误并改正

The watch her mother (gave it to her) works very well.
括号段出了问题，定语从句使用不正确
应为
The watch her mother gave her works very well.

正确的应为：
The watch her mather gave to her works very well.

这里的 her mother gave to her 为后置定语从句，原句中的 it 就是指 watch ，与前面的 watch 重复了。