learn 可作及物动词用，也可作不及物动词用。
learn 作及物动词用时，后面需要跟宾语，如：
I like learning Chinese.
We learn Chinese,maths,English ,physics and some other subjects
.……
learn作不及物动词用时， 后面不能直接跟宾语，如：
We must help each other and learn from each other.
How did you learn about the meeting?
……
