"To be" refers to a state of being. "To do" refers to an action. "He does not care" or "he cares" both refer to how he feels at a particular point in time.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
TerI don't know how to explain that to a friend.He ___ not care. (is? / does?)
Any help or if you know of any links to explain this simple mistake would be welcome.