Use drag-and-drop to select the area where you want to input values. But start dragging from the last cell of the area and release the mouse button when you have selected the first cell. Now you can start to input values. Always press the Tab key to advance to the next cell. You will not leave the selected area.
通过拖放选中您要输入数值的区域。但是要从选中区域的最后一个单元格开始拖曳鼠标，当您已经选中第一个单元格时释放鼠标按钮。现在您可以输入数值了。总是按 Tab 键来前进到下一个单元格。这样您不会落掉选中的区域。