There are many expressions and constructions we can use to express Emphasis in English.
The passive voice
The terrorist was arrested by FBI.
It was me who broke the window.
I used my own computer.
Do + verb (affirmative)
Yes! I do like you.
What you think you are doing!
It was very clever indeed!
I haven’t seen him around at all.
He was utterly exhausted after work.
Don’t bother! I can do it myself.
They were even asking for help.