pay attention to这是个词组,这个to是为了后面加宾语所以才有的吗?这么这个词组是不及物的了?如果我说i

一般来说这个词组有两个用法:
pay attention to sth /doing sth
例：You must pay attention to your study.
你必须专心学习.
pay attention+从句
例：Please pay attention to what I am saying.
请注意我说的话.
不加to也有,但是一般是please pay more attention (用的比较少吧)
然后你这个要这样i didnt pay any attention to sth/doing/从句.