1)I have studied French2)She has eaten an octopus3)They have gone to Scotland4)We have read that book5)He has lived here for three years6)You have known David for 10 years7)We have been here for 2 weeks8) I have lost my keys9) He has drunk too much coffee10) They have missed the train11)She has gone to Peru12)We have eaten too much chocolate 13)I have had breakfast this morning14) John has missed the train 15) Lucy has cooked the breakfast16) They have written to the politician17)You have found your wallet 18) I have met his mother19) We have tried roller-skating20) She has passed the exam Present Perfect positive :I/you/we/they + have + verb(3 form)He/she/it + has + verb (3d form)sent Perfect negativeвсе то же самое только haven't / hasn't question :Have + I/YOU/WE/THEY + verb (3d form)Has + He/she/it + verb (3d form)