You use seriously to indicate that you are not joking and that you really mean what you say.
Seriously, I only smoke in the evenings.
说真的,我只在晚上抽烟。
If something affects you seriously, the situation is very bad and causes you to be worried or afraid.
If this ban was to come in it would seriously damage my business.
这项禁令如果实施,将会严重地损害我的生意。
If you treat something seriously, you think it is important and give it careful consideration.
The management will have to think seriously about their positions.
管理层将不得不认真考虑他们的立场。
They are not thought to be seriously hurt.
据说他们没有受重伤。
You can use seriously to indicate that you are sincere about what you are saying, doing, or intending to do.
Are you seriously jealous of Erica?
你真的妒忌埃里卡吗?
If someone behaves seriously, they are thoughtful and quiet, and do not laugh very often.
They spoke to me very seriously but politely.
他们非常严肃但又很有礼貌地与我交谈。
You say 'seriously' when you are surprised by what someone has said, as a way of asking them if they really mean it.
'I tried to chat him up in the supermarket.' He laughed. 'Seriously?'
“我试图在超市同他搭讪。”他笑着说。“当真?”
take seriously
If you take someone or something seriously, you believe that they are important and deserve attention.
It's hard to take them seriously in their pretty grey uniforms.
他们穿着灰色的制服,很难让人把他们当回事。