You use "so am I" when you are responding to some form of the verb be: I'm hungry. So am I. I'm eating ice cream.
Who am I meaning?
Who am I = what is my identity? The “answer” to “who am I” is our identity. Our identity is our all-encompassing system of memories, experience, feelings, thoughts, relationships, and values that define who each of us is.2020-10-05
Can I or could I?
"Can I" is best for semi-formal situations. "Could I" is best for semi-formal situations.
When to Use May I and can I?
May is the more formal word, and if you are at all concerned about being tut-tutted, a safe choice. Can is now the verb of choice for ability, and both can and may are still used in the "possibility" sense. You may use can if you wish, and you can use may if it makes you feel better.
Could I vs May I?
"Can I" is best for semi-formal situations. "Could I" is best for semi-formal situations. "May I" is best for semi-formal situations.