In the middle of the night,two boys woke up and began shouting.请问_英语解答

In the middle of the night,two boys woke up and began shouting.
请问后半句是何时态?
为何加ing?

人气：150 ℃　时间：2020-03-25 11:27:08

解答

固定搭配吧
bagan是一般过去时
bagin doing是固定搭配,不用看时态