To put emphasis on actions.
Emphasis on Actions ( do / does / did / oneself )
- Do you really love her?
Yes, I do love her. - Can't you trust him anymore?
He did lie to me, remember? - Hey, help me with this problem.
No, you have to do it yourself. - She was really curious about the news.
Actually, I, myself, am curious too.
What brought you to the place where you are at? (school / work / marriage etc...)
How did you get to that place? Did you yourself make a decision?