look outside 与look out of有什么区别

Look outside 是指单纯地看外面
Look out of指从...向外看
例如：
I was looking outside when my mom came in.
我妈妈进来的时候,我正在往外看.
I looked out of the window in class because I was too bored to listen.
我太无聊了,所以在课上从窗户往外看.