Spanish

Since I'm going to take spanish in 7th grade I thought I should practice the most important phrases in the spanish Language.So here they are:

Co'ma est'a usted? = how are you?
No,gracias=no thank you
Perdon!=excuse me (when sneezing,ect.)
ha sido culpa mia=it wasn't my fault
no comprendo=i don't understand
batidobde vainilla=vainilla milk shake