把 / MANIPULATION WITH OBJECT
Sometimes we need to place the object in front of the verb – even though the standard position of the object is behind the verb.
We need to do that in case that the verb is modified.
We also usually do that when we talk about moving the objects, placing them somewhere etc.
The function of 把 /bǎ/ is that it informs the listener that the object is in front of a verb where (s)he doesn’t expect it at normal circumstances.