People were having fun in the pool, swimming or just splashing around.
人們在游泳池里或者游泳，或者只是拍打戲水，開心地玩著。
He barged in on us while we were having a meeting.
我們正在開會(huì)，他闖了進(jìn)來。
The children were having fun, chasing each other's shadows.
孩子們追逐著彼此的影子，玩得很開心。
They were having breakfast when I arrived.
我到達(dá)時(shí)他們正在吃早飯。