GRAMMAR WORKSHEETPRESENT PERFECThave not = haven'thas not = hasn't1Younothavehavehashashashavehave1YouHeSheItWeTheyHeSheItWeTheyeateneaten. havehavehashashashavehaveYes,No,1youHaveHaveHasHasHasHaveHavenot. youhesheitwetheyeaten?1youhesheitwetheyhave. have. has. has. has. have. have. havehavehashashashavehavehesheitwetheyhauon't or 'hasn't' for negative sentences.