同学们,我确实没有太仔细看下去: 链接如下: http://www.cic.gc.ca/english/visit/visas.asp 我只看了 You do not need a visa to visit or transit in Canada if you are a United States citizen or a person lawfully admitted to the United States 全文是: You do not need a visa to visit or transit in Canada if you are a United States citizen or a person lawfully admitted to the United States for permanent residence who is in possession of their alien registration card ( Green card) or can provide other evidence of permanent residence. 多谢指教!