定语从句的中心语判断

Pain is the feeling of great discomfort you have, for example when youhave been hurt or when you are ill.

you have 的中心语是 the feeling of great discomfort 还是 greatdiscomfort?

应该是the feeling of great discomfort. 若是great comfort的话，说话时自然会在great前加上冠词。