原句是Now that members of Generation Z are graduating college this spring—the most commonly-accepted definition says this generation was born after 1995, give or take a year—the attention has been rising steadily in recent weeks.

有些老师说graduating后少了一个from，所以该句语法错误。

后来我在FORBES又找到了一样的表达：

While working for a micro-finance non-profit in South Africa after graduating college, Beshara created dvelo.org to help charities group-fund donations for projects in developing countries.

所以请问各位老师，是考研阅读里的句子有语法错误，还是graduate一词有特殊用法？