Here are some key points for delivering effective presentations involving spoken language:

Preparation: Before giving a presentation, it's important to prepare your material thoroughly. This means researching your topic, organizing your ideas, and rehearsing your delivery.

Clarity: Speak clearly and at a moderate pace, making sure that your audience can understand and follow your presentation. Avoid using jargon or complex vocabulary that your audience may not be familiar with.

Engagement: Engage your audience by using a variety of speaking techniques, such as storytelling, humor, and examples to make your presentation more interesting and engaging.

Confidence: Speak confidently and with authority, projecting your voice and making eye contact with your audience. This will help to establish trust and credibility.

Non-verbal cues: Use body language and other non-verbal cues to enhance your message. For example, use gestures to emphasize a point, and maintain good posture to project confidence.

Practice: Rehearse your presentation several times before giving it to your audience. This will help you to become more comfortable with the material, and to identify and correct any errors.

Audience Feedback: Be open to audience feedback during the presentation. You can ask questions to understand their level of engagement and make adjustments accordingly.

Conclusion: Summarize your main points and leave your audience with something to remember.

By following these key points, you can deliver an effective presentation that will engage and inform your audience.