How do you use whereby in a sentence?

"Whereby" is a conjunction that introduces a clause explaining how something happens or is done. Here are a few examples:

Formal:

* The company implemented a new system whereby employees can submit expense reports online. (This explains how employees can submit expense reports.)

* The treaty provided a framework whereby the two countries could cooperate on environmental issues. (This explains how the countries can cooperate.)

Informal:

* He invented a clever contraption whereby he could open the jar without using his hands. (This explains how he opened the jar.)

* She found a way whereby she could finish the project early and still take a vacation. (This explains how she could achieve both goals.)

Key points about using "whereby":

* "Whereby" is followed by a clause. This clause provides the explanation of how something works or happens.

* It often introduces a method, process, or means.

* It can be used in both formal and informal writing.

* It can be replaced with other conjunctions like "by which" or "through which" but may sound more formal.

Let me know if you'd like to see more examples or have any other questions about using "whereby"!