In GM/S-V/Parallelism -"Too short" Pattern 2:Keep That of or Those of if you need to-The example given says "The face i see in ads every day is that of a famous actor",and written that here That stands for face,but in Pronoun chapter it is given that use that or those to indicate new copy.
So here face is not a new copy then why that of is used. Shouldn't it be only "The face i see in ads every day is of a famous actor".