That / Which


THAT‘  –  is used when you want to  ‘stress on the identity’ of the subject, or, when you want to add some specific detail – to help identify the subject, which is important for the meaning of the sentence.


EXAMPLES .

This is the cab  that dropped me here yesterday.


These are the books  that  I bought from your store.


Books  that are written by business leaders, are usually quite expensive.



WHICH‘  –  is used when you just want to add some more information about the subject, which is not necessary for the identity of the subject.


EXAMPLES .

For them, I am sending a pre-booked cab, which can also drop you home, if you want.


There are some interesting books, which I intend to buy soon.


Books, which are the best source of learning, are undervalued by youngsters today.