问题描述：
there is /are/have been 如何选择
1. i'm sorry i 'm late. There was a lot of traffic.
为什么用 was ? 选择is 还 are 依其后接的是可数还是不可数,和名词前的修饰词无关(any , a lot of.)?
2. when we arrived at the cinema, there was a long queue to see the film. 此句为什么不用there has been? (当我们到达影院时,已经排了一条很长的队.) 队是在到达前就已经开始在排了.
3.why are those policemen outside the bank? there has been a robbery. 此句为什么用has been?
1. i'm sorry i 'm late. There was a lot of traffic.
为什么用 was ? 选择is 还 are 依其后接的是可数还是不可数,和名词前的修饰词无关(any , a lot of.)?
2. when we arrived at the cinema, there was a long queue to see the film. 此句为什么不用there has been? (当我们到达影院时,已经排了一条很长的队.) 队是在到达前就已经开始在排了.
3.why are those policemen outside the bank? there has been a robbery. 此句为什么用has been?
问题解答：
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