Доклад «Разница в употреблении which, that, who"

Sometimes we confuse words which,that,who.Most often it comes from the fact that we do not know the concept of that words,and also it is very important to understand the sentence in the text.One of the basic rules that you need to know, not to be mistaken,it is knowledge,that which and that refer to inanimate,for example: it is hairbrush,that I like.But word who refers only to animate: the doctor,who helped me.So the main thing is to understand and remember!