she is not the girl that she used to be

问题描述:

she is not the girl that she used to be
和 she is not like the girl what she used to be
这两句为什么一个用that 一个用what

第一个是定语从句 that she used to be修饰的是the girl,that在从句中充当宾语成分
第二个句子是错误的也应该成that,否则就改成she is not what she used to be