seriously等于短语:be serious 
They take their responsibilities seriously.
他们认真对待自己的职责。
She was seriously injured.
她受重伤。
Is she serious about learning to be a pilot ?她真想学开飞机吗
The mistake is not very serious.
这错误不太严重。
Getting married is a serious matter.
结婚是件大事。
He is a serious boy.
他是个严肃的孩子。
I was pretty serious in what I said at dinner.
我晚餐时说的话是当真的。