“Où es tu?” il a demandé.
“Where are you?” he asked.
demandé is the past participle of “ask,” which means you just need to throw in an “avoir” (have) verb before it, and you’ve got a dialogue tag. Coming across this a lot in this book, so it’ll be good to know. The other tag is “il/elle a dit,” which means he/she said.
Vous lui avez demandé premier, non?
You asked her first, right?
One really hard thing from going from Chinese to French is that I have to untrain my brain to put grammar in reverse. For example, the adverb “first” goes at the end of a sentence in English (“Ask your mom first!”) but at the beginning in Chinese (“First ask your mom!”) This placement is up to style in English but it’s fixed in Chinese.