Absolutely! Conditional formatting with a dropdown list is a powerful way to dynamically format cells based on user selection. Here's how you can achieve this:

1. Create your dropdown list: Follow the steps mentioned previously to create a dropdown list with the desired options in a separate location of your worksheet.

2. Select the cells to format: Choose the cells you want to format based on the dropdown selection.

3. Apply conditional formatting: Go to the "Home" tab and click on "Conditional Formatting" in the Styles group. Select "New Rule" from the dropdown menu.

4. "Use a formula to determine which cells to format" rule: In the "New Formatting Rule" window, choose the option "Use a formula to determine which cells to format."

5. Enter the formula: In the "Format values where this formula is true" box, enter a formula that references the dropdown cell and the desired formatting condition. Here's the basic structure:

`=INDIRECT(dropdown_cell_address) = value_to_check`

- Replace `dropdown_cell_address` with the actual cell address containing your dropdown list. Ensure you use absolute references ($符号) to lock the cell location if your formula is copied elsewhere. (e.g., =$A$1)
- Replace `value_to_check` with the specific value you want to check against. This could be a text string, number, or another cell reference depending on your criteria.

6. Format the cells: Click on the "Format" button and choose the desired formatting options (e.g., font color, fill color) for cells that meet the formula condition.

7. Copy the formatting rule (Optional): If you want to apply the same formatting based on different dropdown selections, you can copy the formatting rule and simply change the `value_to_check` in the formula for each rule.

Example:

Let's say your dropdown list in cell B1 contains options "High", "Medium", and "Low". You want to format cells in range C2:C10 with a green background if the dropdown selection is "High", yellow for "Medium", and red for "Low".

Formula in conditional formatting:

`=INDIRECT($B$1) = "High"` (for green formatting)

Copy the rule and modify the formula:

- Create separate rules with the same basic structure, replacing `"High"` with `"Medium"` and `"Low"` for the desired conditional formatting of each dropdown option.

With this setup, whenever a user selects an option from the dropdown list, the cells in C2:C10 will automatically change color based on the chosen value. This allows for dynamic formatting and clear visual cues based on user input.