You will want to spend a lot of time practicing before delivering your presentation. Make sure that your speech matches well with your slides. You will also want to be sure you know how to time your speech, especially if you want to put the presentation on automatic, rather than having to stop or refocus to change slides. Don't use your slides as a crutch. They're there to add to your speech, not carry it along. If you present as if there were no slide, by being an engaging, enthusiastic speaker, your audience will be enthralled and remember your presentation for years to come. Don't ramble. Don't include information you don't need. Tell your audience what they need to know and don’t take any more time than you need to get there. Use bullet points for important information and expand on it while presenting instead of writing a long paragraph and reading it word for word. Remember, presentations should never be more than 20 minutes long. If you are a teacher with time to fill, break up presentations with activities. Having to listen to a presentation for more than 20 minutes will cause most people to disengage, which is not what you want to happen. Find ways to inspire your audience. You want to give them an emotional connection to the material you are presenting. This will make them more invested in the information and will also help the retain the information more accurately and for longer. Be enthusiastic about what you are presenting and make the audience understand why it’s important. It’s not enough to show why your information is important to someone else; you have to make it important to your audience. Make them understand why they should care. For example, don’t give a lecture on history and just expect students to care. You need to show them how that history directly ties to current events and affects their lives. Look for parallels and direct correlations to tie your information to your audience.

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Write a summary of the previous text in Chinese:
练习。 假装现在没有幻灯片了。 说到点子上。 富有激情。