Not 扣除.

Two requirements must be met:

1. Your physical presence in US must be at least cumulative 30 months during the lastest five years before you file N-400;

2. Your continuous residence must not be disrupted, i.e. if your stay outside US for > 6 months continuously, it may be disrupted; and if your stay outside US for > one year continuously, it will be disrupted unless you worked for a US employer and the employer filed N-470 for you.

See this link:

http://www.uscis.gov/us-citizenship/citizenship-through-naturalization/continuous-residence-and-physical-presence-requirements-naturalization

所有跟帖： 

• 谢谢你的答复。在过去申请绿卡的蹉跎岁月里，你帮了我很多很多，一直记在心里。非常感谢！！ -红霏- ♀ (0 bytes) () 10/24/2015 postreply 19:20:16