have no motivation for going to graduate school中going前面为什么用fotr
motivation for ......的动机,是搭配,如果是动词,可以用motivation to do sth做某事的 的动机。
如:
The motivation for explaining this possibility is that we are doing this technology already.
解释这种可能性的动机在于,我们已经在做的这项技术。
the best motivation to do something about climate change.
我们为气候变化做些事情的最好动机