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追問: 學校說我用H4簽證讀書也會給我發I20, 我知道H4是不需要I20的，如果學校給我發了I20會影響我的簽證麽？

-No. If you need to change H-4 to F-1, you need to file I-539 to USCIS and after USCIS approve it, then your status will be F-1. Otherwise, your H-4 status will not be changed.