I saw a penguin

• I has seen a penguin

• I have seen a penguin

• I have see a penguin

• I have saw a penguin

Did they eat breakfast?

• Have they eaten breakfast?

• Has they eaten breakfast?

• Have they eat breakfast?

• Have they ate breakfast?

Jennifer didn’t finish her homework

• Jennifer has finished her homework

• Jennifer haven't finished her homework

• Jennifer hasn't finish her homework

• Jennifer hasn't finished her homework

Did they meet the president?

• Have they meten the president?

• Have they met the president?

• Has they met the president?

• Have they meet the president?

Did Roberto visit Vancouver?

• Has Roberto visited Vancouver?

• Has Roberto visit Vancouver?

• Have Roberto visited Vancouver?

• Has Roberto visiting Vancouver?

Mrs. Smith didn’t read the book

• Mrs.Smith haven't read the book

• Mrs.Smith hasn't readen the book

• Mrs.Smith hasn't read the book

• Mrs.Smith hasn't readed the book

He was a teacher

• He was been a teacher

• He has be a teacher

• He has was a teacher

• He has been a teacher

Were you in jail?

• Have you be in jail?

• Have you been in jail?

• Has you been in jail?

• Have you were in jail?

Formula of Present Perfect

• Subject + have/has + Ved/3

• Subject + have/has + Ving

• Subject + have/has + Ved/2

• Subject + have+ Ved/3

Actions in Present Perfect....

• Just happened in the past at specific time (minute,seconds)

• happened only in the present

• happened in the past but we don't say when

• happened at exact time (minute,seconds)