I happened to be tolking with him when he was hit by a ball and c_英语解答

I happened to be tolking with him when he was hit by a ball and collapsed.
为什么不填to talk?

人气：458 ℃　时间：2020-03-31 11:51:04

解答

后面的when he was hit by a ball and collapsed表示一个精确的时间点,前面应该用be talking表示在精确时间点正在发生的事情