present perfectform 1. statement: have / has + past participleI have finished the cake.We have finished the cake.You have finished the cake. (singular you)You have finished the cake. (plural you)They have finished the cake.He has finished the cake.She has finished the cake.It has finished the cake.form 2. negative statement: have / has + not + past participleI have not eaten lunch.We have not eaten lunch.You have not eaten lunch. (singular you)You have n