都出生在中国，现有加拿大国籍。
我的第一个H－１B已于９月１８日到期，延长申请于８月１８日递交，不知何故至今未得批复。公司律师说等４～５月也正常。
２０１２年１月１日可递I－４８５。我的问题是：
1. 我们是否算合法居留，有资格申请I－４８５；
-Yes, you can continue to work up to 240 days before the H1 extension is approved and legal stay unless the H1 petition is denial.
我公司律师说是180天。我糊涂了，到底是240天还是180天，请大师解答，并给出处。
-Tell the lawyer whether he/she has heard "H1 240-day rule" for the H1 extension. If no, he/she may study hard on the Law: "8 C.F.R. 274a.12(b)(20)".
See this link:
http://www.murthy.com/h1bstvi.html
6. 240-Day Rule : An H1B whose employer has filed a new H1B petition to extend the stay (through the current employer - NOT a job change) can work for up to 240 days based upon the pending H1B petition.
Also see this link:
http://oips.gmu.edu/depts/h1b.html
H-1B extensions fall under a "240-day rule" - please note that this applies to H1Bs only. "An H1B alien for whom the employer has filed a timely application for an extension of H1B stay can continue employment for the same employer while the request for extension of stay is pending with USCIS, for a period of up to 240 days beyond the expiration of the prior period of authorized stay."
另外，是合法居留，同时也是合法身份？
-合法居留 unless the H1 denial and 合法working with 合法居留up to 240 days and合法身份when the H1 approval.
2. 由于没新的H－１B和H－４，如何填相关的内容？
填已过期的H－１B和H－４。
-Fine and provide the H1/H4 extension receipts for the I-485 filing.
3. 我孩子２０岁，在加拿大读大学。我们申请I－４８５时，她不可能在美国；或在递申请后必须到加拿大学校读书。她是否被视为自动放弃移民资格？有何种方法可以补救？
可以现在填I-824吗？
-Yes, you can file your I-485 for your own, and file I-824 for your child when your prority date is current.
I-824与I-485有何区别？有何坏处？
-I-824 is for application immigration visa outside US; I-485 is for getting green card inside US. If your child file I-485 within US or you file I-824 for her, your child can be considered to have immigration intent and thus, it may be difficult for her to enter US just using her Canada passport or TN application. So, you may just file your I-485 and then, she may enter US to file her I-485 later after she finishs her study in Canada.
例如是否她可以在２０１２年５月回美国后（仍未过２１岁）再单独递交申请？
她5月到美国公司实习（CO-OP），可能改成 TN 或其他签证，有何影响？
-Fine if she has not file I-485 or you do not file I-824 for her. She has to file I-485 within US or you file I-824 for her before she turns 21 (CSPA age).
