题目内容：

for very long time与 for a very long time区别
she has lived abroad for a very long time正确还是不加a 正确?
为什么

优质解答

for a very long time 正确,因为 for a long time 是固定搭配,加上very后表示程度加深
for very long time 不算错,但用的很少