切换输入法的快捷键是：“Ctrl+shift”，更改回来的操作：
1、首先打开电脑，右键单击右下角的键盘图标，选择打开“设置”。
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2、然后在弹出来的窗口中点击打开“高级键设置”选项。
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3、在文本服务与输入怨言选项页面，选中“切换各种语言”，然后点击“更改按键顺序”，
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4、然后在弹出来的窗口中点击选择想要的切换语言快捷键，回车确定。
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5、然后就可以按“Ctrl+shift”就可以切换输入法了、
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