Question

when you finish reading the book,you have____ better understanding of____life

when you finish reading the book,you will have __a___better understanding of life
答案上说understangding是不可是名词常在前面家不定冠词
我不明白是是什么意思
既然不可数，怎么还能用a呢？

Answer 1

抽象名词前面如果有形容词,就可以用a/an修饰了

Answer 2

貌似"a"就是传说中为数不多的不定冠词。