copy specific characters from a string to another string

lets say i have 2 strings

char str_cp[50],str[50];
str[]="how are you"  

and i want to put the second word ex "are" into another string named str_cp so if i use

printf("%s ,%s",str,str_cp); 

will be like

how are you 
are 

how can i do that? (i tried strncpy function but it can copy only specific characters from beggining of the string ) is there any way to use a pointer which points at the 4th character of the string and use it in the strncpy function to copy the first 3 characters but the beggining point to be the 4th character ?