2004-11-01的公布表明: Who can become a Canadian citizen? 1. You must be 18 years of age or older to apply to become a Canadian citizen. 2. You must be a permanent resident. 3. You must be in Canada legally as a permanent resident. 4. You must have lived here for at least three years. You must have lived in Canada for at least three years out of the four years immediately preceding your application for citizenship.