Re: Are these sentences right? I am using the word concert.
1. I'd say he did a concert, but maybe he "had" a concert is okay.
Originally Posted by michael281001
2 and 3. How many concerts will he do next year?
4. Who's should be Whose, but it's not very natural. Which artist performed at the Civic Center last night? Who did a concert here last night? Which artist did you see in concert?
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.