It should.keep.you focused in class and help you get a genuine understanding o
f what you are learning.
想请教板上大神们
为何是keep you focused ，因为我翻来覆去想不到的可能原句长什么样子？
抑或是因为这边focused 是oc 当形容词用修饰you这个o
但为什么是pp形式而不是V ing 的形式
。
我的小见解请大神们给予指教
Focus v 使集中
The math class focuses us instead of we focus the math class.If so, we focus
“on “ the math class is the correct one to present the meaning which express
上课专心这件事。
Or, we are focused the math class, isn’t it?
So, keep you focused would explain why it is focused instead of focusing.