The word can refer to anyone who held a position prior to the current holder, especially when the indefinite article is used. A predecessor developed the current manufacturing process. My immediate...
The correct term is 'you and I' - however - informally 'you and me' has also become acceptable. It does depend on usage. You and I can sound formal, but is clearly wrong in some cases. 'John will...
Yes, it is correct. I always say that! You always say that! She/he always says that! They always say that! We always say that! just to add, My teacher always says that!