the equivalent of : tables and structure in the implement of method

In methods the syntax "TABLES" does not exists.

You should use a global well-defined type (suchs ad a table type, like P0001_TAB) or use the generic addiction TYPE ANY TABLE (or TYPE STANDARD TABLE, TYPE SORTED TABLE, and so on).

Like this:

CLASS two DEFINITION.
  PUBLIC SECTION.
      DATA: ...
                 ..
* // This if you don't have a global type:
    METHODS: start_two
                 IMPORTING  p_board TYPE STANDARD TABLE
                 EXPORTING  car TYPE n
                                     bike TYPE n.

* // This if you have a global type:
METHODS: start_two
                 IMPORTING  p_board TYPE board_tab "Should be defined in DDIC
                 EXPORTING  car TYPE n
                                     bike TYPE n.
...
...
ENDCLASS.

Hope this helps.

Roby.