Hi, Angela! ♥

I perfer My coffee black. -> I prefer black coffee. 

=> Corrected : The sentence is corrected grammatically. ​

He dusted the keyboard. ✔ (Punctuation)​

Teddy is wiping the floor with a map. -> Teddy is mopping the floor.

=> Your sentence has a correct grammatical structure, but this has the correct usage/ expression.

My dad rake in the yard. -> Dad is raking the yard.

=> Corrected : The sentence is corrected grammatically.