Reason: Another Excel workbook was not selected in the last step. The correct operation method for copying/moving worksheets is given below:

Required materials: Excel.

1. First open one of the Excel workbooks, click the "File/Office button" in the upper left corner of the workbook, and click "Open" in the drop-down menu.

2. Now select another workbook and click "Open" (to use the copy or move worksheet function, both workbooks must be opened in the same Excel window).

3. At this time, use the tab on the computer taskbar to switch to the copied workbook.

4. Right-click the worksheet label that needs to be copied, and click "Move or Copy Worksheet" in the menu.

5. Click in the Move Copy window to expand the list, select another workbook, and check "Create a Copy", or do not check this item when moving the worksheet and click "OK".

6. At this time, you can copy the specified worksheet into another workbook.