I’m (pleased and surprised/pleasantly surprised)1 (at/by)2 the speed of his (<recovery from a near-death sickness/recovery from a life-threatening illness>3a/<recovery from an emotional trauma>3b/<recovery from a financial disaster>3c).
I'm surprised by the speed of his recovery 他的恢复健康的速度真的令人惊讶 True of ?真的吗? I'm surprised because the hairdressing surgical operation ,let him speed too beautiful 因为美容让他变得太漂亮了,我真是太惊讶了