回複：請問申請公民前，綠卡可在國外待多久？是3年裏共可待6個月呢還是一次

是一次性就可待5，
Here is the physical presence requirements in U.S. for US citizenship application:

1. has lived continuously as a lawful permanent resident in the country for at least 5 years prior to filing with no single absence from the United States of more than one year;

2. has been physically present in the US for at least 30 months out of the previous five years (absences of more than six months but less than one year shall disrupt the applicant's continuity of residence unless the applicant can establish that he/she did not abandon his/her residence during such period) ; and

3. has stayed within a state or district for at least three months

所有跟帖： 

• 謝謝！一就是說我每年都可以回去待5，6個月的，是嗎？ -evermiss- ♀ (0 bytes) () 12/24/2009 postreply 20:52:40

• Correct. -863211- ♂ (0 bytes) () 12/24/2009 postreply 21:31:42

• 謝謝！原來以為3年裏隻能回去6個月，現在按你說的那樣 -evermiss- ♀ (10 bytes) () 12/24/2009 postreply 21:38:44