'really amazed me' is a correct and usable part of a sentence in written English. You can use this phrase to emphasize the strength of your amazement for something. For example: "The progress she made in such a short amount of time really amazed me.".
It really amazed me".
"What really amazed me is everyone boos him," Davis said.
"What really amazed me was how warm she was.
That's kind of a staple, but it's really amazed me how much Microsoft has affected everybody and everything.
"It really amazes me," Mr. DeLap said.
When asked if she would call on protesters to refrain from using bombs, she said: "It really amazes me when people ask if I will condemn it.
One of the things that really amazes me is how many people would rather discuss style than substance – that I'm too arrogant, too self-assured.
Awesome tool! I started using it one year ago and I never had to look for another app
Ha Thuy Vy
MA of Applied Linguistic, Maquarie University, Australia