Here's why:
* Thesis Statement: This is the main point or argument the author is trying to convey. It acts as a roadmap for the entire passage, outlining the key ideas that will be discussed.
* Introduction: The thesis statement is typically found in the introduction of a passage, often at the end of the introductory paragraph.
* Supporting Evidence: The rest of the passage will then provide evidence, examples, and explanations to support the thesis statement.
Example:
Passage:
> "The use of plastic bags has a devastating impact on the environment. They are not biodegradable and can take hundreds of years to decompose, filling landfills and polluting our oceans. Moreover, plastic bags often end up in waterways, harming marine life. Therefore, individuals and governments should take action to reduce plastic bag usage."
Thesis Statement:
> "The use of plastic bags has a devastating impact on the environment."
Note: While the thesis statement often directly states the central idea, sometimes it might be implied. In these cases, you'll need to read the passage carefully to identify the main point.