-Can I prepare turkey for Xmas?
-Yes, you can.
-May I take my father's gun and go hunting?
-No. It's very dangerous.
-Can I sell a gold coin from my granny's collection?
-Ask your granny for permission.
-Why don't we sail to America?
-We are going to sail to America tomorrow.
-May I sell all the harvest from my garden?
-Only if you give me some money.
-Can I buy a snake?
-Only if you will take care of it.