* A clear and concise topic sentence: This sentence should introduce the main topic of the text and give the reader a clear understanding of what the text is about.
* A hook: This could be a surprising statistic, a thought-provoking question, or a relevant anecdote to engage the reader's interest and make them want to continue reading.
* A brief overview of the main points: This section should outline the key information that will be covered in the text, providing a roadmap for the reader.
* A clear purpose: The reader should understand the text's objective, whether it's to inform, persuade, or analyze.
For example, a good opening for a summary informational text about the history of the internet could be:
> The internet has revolutionized the way we live, work, and communicate. From its humble beginnings as a military research project to its ubiquitous presence in our everyday lives, the internet has had a profound impact on society. This text will explore the key milestones in the history of the internet, examining its origins, evolution, and enduring impact on our world.
This opening fulfills all the criteria mentioned above. It clearly states the topic, uses a hook to pique the reader's interest, provides a brief overview of the main points, and clarifies the text's purpose.