那位牛人给看看呀

1.In his research, he distinguishes mood swings, which may be violent without their  being grounded in mental disease, from genuine manic-depressive psychosis.

原句为什么不对呀？答案是between mood swings, which may be violent without being grounded in mental disease, and genuine manic-depressive psychosis.

2. What was as remarkable as the development of the compact disc has been the use of the new technology to revitalize, in better sound than was ever before possible, some of the classic recorded performances of the pre-LP era.

原句为什么不对呀？答案是no less ramarkable than the development of the compact disc.

P.S：我了解答案为什么对，但是不知道原句为什么不对！请给点指点！谢谢了！

1。原句错在without sb's doing sth这种结构是错误的

2。错在前后时态不一致，不能又是was又是has been阿。

1.有这种结构的用法呀！without one's doing

2.老师上课的时候也是说时态不对，那如果要用的话，改成什么就可以了呢？

我记得XDF上课说的是 without doing 中间不加东西的