Translation:Dych chi'n hoffi menyn?
hello why chi'n and not chi? what is the difference?
This is explained in the course notes and summarised here: https://www.duolingo.com/comment/13844144.
The 'n/yn is needed to link dych chi with the verb-noun hoffi
Isn't Dych chi'n the plural for you???
Plural or polite.