Can I..? "Can I...?" is the most casual way to ask for permission. It's common for talking to friends, coworkers, and family members: Can I see it? Can I get something to drink? In traditional English grammar, "Can I...?" was not used for asking permission. That's changed in the last 50 years, though. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.