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以下是详细情况：

还是可以继续用EAD一段时间，只是不能延期而已。

-Right. The EAD is still valid until the I-485 is denied. But if you quit the job and go to work in China, then your I-485 will be denied later, then your spouse's I-485 will also be denied. After the I-485 denial, then the EAD can not be used abd extended. Don't you want to get the green card?

这里好像没有明文规定，不知该如何理解。

还有，附属以前用过TN，可惜有485pending 后转为家属EAD了。由于TN不能有dual  intent，很难从EAD 转回TN了

 

非常感谢！