1·Somebody was beating at the door.
有人在打门。
—— 《牛津词典》
2·Someone was beating at the door.
有人在打门。
—— 《牛津词典》
3·He started beating me when I was about fifteen but I didn't do anything to provoke him.
我大约十五岁时，他开始打我，但我并没有做什么招惹他的事情。
—— 《柯林斯英汉双解大词典》
4·You really deserve a good beating, you naughty boy.
你这个调皮孩子真该打。
—— 《新英汉大辞典》
5·When they bade him good-night, he only ran away, beating the air with his stick.
当她们向他道晚安时，他只是跑开了，用鞭子在空中乱打。