The slide layout in every Keynote theme is based on the master slide。When you need to add a specific element such as a title、subtitle、when you slide a bulleted list or image)，You can select the master slide that best meets your needs for modification.。so，Slides in the presentation will be changed，while the master slide will retain its original state。 添加母版幻灯片 1.点按工具栏中的“显示”，Then select "Edit Master Slide"。 2.Do any of the following： •Click the Add button in the toolbar，Select a master slide。 •In the slide navigator，Choose a slide that is similar to the layout you want，Then press Return。 3.Double-click in the slide navigator...