"He is a good art teacher."
Translation:Mae e'n athro celf da.
Why can you use "mae e'n X" as well as "X yw e" here? Normally you can't use "mae" for equatives, right? Is it because of the adjective? Could you say "mae e'n athro celf"?
Well, you can use Mae e'n ... for identification sentences, but the usual pattern would be:
- Athro celf da yw e
It all depends in the context really. If the main point is that he is an art teacher, then the emphatic Athro celf yw e is the pattern to use. If it comes up as an incidental point in a wider conversation, then the unemphatic pattern might be fine.