Could I use Entity with EF 4 as a template for many tables?

I have many 开发者_如何学Ctables with same structure, and every year I add new tables. For example: table012010( id ), table022010( id ) e.t.c. Can I add an Entity to my edmx file and at runtime to change the table name from where to select data or to write data? Is this possible with EF 4?