You can use the keyboard to perform many of the Keynote menu commands and tasks. To see a comprehensive list of keyboard shortcuts, open Keynote and choose Help > Keyboard Shortcuts
Many items within the Keynote window also have shortcut menus that list commands specific to the item. Shortcut menus are especially useful for working with tables and charts.
Press the Control key while you click an object.
The commands available in the shortcut depend on what item you click.