这句话里advice为什么不加a?That's very good advice

some advice 为什么不加s such good advice,为什么不能用so good advice mr green gave us good yesterday.a some advice b a advice c s 为什么选择What good advice It's very nice for you to give me the advice.这句话 My father gave me such good advice that it helped me a lot.这 It's ____a__ useful advice from his best friend .为什么要加a .adv many a time ___me good advice many a time() given me good advice. what a good piece of advice 还是what a piece of good advice advice前面是加a还是an You have taken very good advice.改为感叹句.