
一般情况谓语动词+doing。
后面只用doing的有
enjoy doing sth.“享受做某事”;
finish doing sth.“完成做某事”;
keep doing sth.“保持做某事”。
例句
What on earth are you doing?
你究竟在干什么?
She\'s doing a terrific job.
她活儿干得真棒。
What the deuce is he doing?
他到底在干什么?
Good heavens, what are you doing?
天哪,你在干什么?