The writing of the speech for teenagers in a powerful country is as follows:

1. Clarify the theme and purpose: First of all, it is necessary to clarify the theme and purpose of the speech, for example, the theme of "Teenagers in a powerful country say", in order to encourage teenagers to actively participate in national construction and development and give play to their own strength.

2. Opening remarks: The opening remarks should be concise and clear, which can attract the attention of the audience. Humor and quotations can be used appropriately, for example, "Young people's wisdom makes the country wise, young people's wealth makes the country rich and young people's strength makes the country strong".

3. Introduce the topic: Introduce the topic of the speech through one or several examples. You can tell some celebrity stories or examples around you to illustrate the importance of teenagers in national construction and development and stimulate the enthusiasm and interest of the audience.

4. Expounding opinions: Expounding one's own opinions and opinions, and explaining one's understanding and knowledge of the theme. You can combine your own experience and thinking to explain the qualities and abilities that teenagers should have, such as innovative thinking, practical ability and responsibility.

5. Illustration: Through specific examples, explain how your own views are applied in practice. It can be your own personal experience or someone else's story. For example, we can tell some examples of scientific and technological innovation to illustrate the important role of teenagers in scientific and technological innovation.

6. Conclusion: At the end, summarize the whole speech and re-emphasize your own views and opinions. At the same time, you can also leave a question or a sentence for the audience to think and ponder. For example, "Teenagers are the strength of the new era and the new force for national construction and development. Let's play our part together and contribute to the realization of the Chinese dream! "

Notes for writing a speech:

1. Clarify the theme and purpose of the speech: The theme of the speech is the core of the speech, and all contents should be centered around the theme. It is clear that the purpose of the speech is to determine the bridge between the content of the speech and the needs of the audience, so that the speech is targeted and convincing.

2. keep it simple and clear: avoid using long and complicated sentences and technical terms. Keep the language simple and clear, so that the audience can understand it easily.

3. Adapt to the audience: understand the background and needs of the audience, and choose the appropriate language and expression according to the characteristics of the audience's age, occupation and education level.

4. Clear structure: A speech should have a clear structure, including opening remarks, theme parts and concluding remarks. The opening remarks should attract the audience's attention, the theme part should focus on the theme, and the ending summary should summarize the theme and leave a deep impression.

5. Powerful language expression: Use powerful language to enhance the appeal and attraction of the speech by using rhetorical devices and emotional expressions.

6. Logical coherence: Make sure that the contents of the speech are logically clear and the paragraphs are naturally connected, so that the audience can understand and follow the ideas.

7. Illustration: Use specific examples and stories to make the speech more lively and interesting and convincing.

8. Appropriate language: Use appropriate language and avoid inappropriate words and expressions, so as not to affect the effect of the speech.