>如果我在那兒延期，是否能延期3個月？
You can apply up to six months extension. However, whether or not your application will be approved is based on officer's sole discretion.
>另外可不可以將旅遊簽證轉換成學生簽證？謝謝回答。
Frankly speaking, it's very hard, especially within 180 days after you enter US holding vistor's visa. According to regulations, you had better tell the visa officer the truth that you may seek transfering your visa status from vistor to student once you enter US when you apply your vistor visa in US' embassey in Japan.
>我很想認識一位在美國的有關簽證的華人律師，因為我的簽證不知何理由被拒簽過。不知您是不是？或者給介紹也行。再次多謝！
Unfortunately I'm not and I don't know about any.
You are welcome.
You can apply up to six months extension. However, whether or not your application will be approved is based on officer's sole discretion.
>另外可不可以將旅遊簽證轉換成學生簽證？謝謝回答。
Frankly speaking, it's very hard, especially within 180 days after you enter US holding vistor's visa. According to regulations, you had better tell the visa officer the truth that you may seek transfering your visa status from vistor to student once you enter US when you apply your vistor visa in US' embassey in Japan.
>我很想認識一位在美國的有關簽證的華人律師，因為我的簽證不知何理由被拒簽過。不知您是不是？或者給介紹也行。再次多謝！
Unfortunately I'm not and I don't know about any.
You are welcome.
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