1. He painted food for hungry people.

Question

2. He painted food for the hungry.

(Are both the same?)

3. In China, there lived a poor boy who loved to paint(,) and whose name was Ma Liang.
(Is this sentence grammatical? Do we have to use 'comma' before 'and' or not?)

Answer 1

You have used the wrong verb -- "painted." Please check to see which word you really want.

3 is correct. You don't need any commas in that sentence.

Answer 2

With a magic paintbrush, he painted food. (folktale)

Answer 3

Ohh. OK.

Both of those sentences are correct, then.