Make the positive present perfect 1) (I / study / French) . 2) (She / eat / octopus) . 3) (They / go...

The present perfect tense is used to describe actions that have occurred at an unspecified time before now. The structure for forming the present perfect is:

[ \text{subject} + \text{have/has} + \text{past participle} ]

Here are the positive present perfect forms of the given sentences:

1. I have studied French.
2. She has eaten octopus.
3. They have gone to Scotland.
4. We have read that book.
5. He has lived here for three years.
6. You have known David for ten years.
7. We have been here for two weeks.
8. I have lost my keys.
9. He has drunk too much coffee.
10. They have missed the train.
11. She has gone to Peru.
12. We have eaten too much chocolate.
13. I have had breakfast this morning.
14. John has missed the train.
15. Lucy has cooked breakfast.
16. They have written to the politician.
17. You have found your wallet.
18. I have met his mother.
19. We have tried roller-skating.
20. She has passed the exam.

In these sentences, "have" is used for the subjects "I," "we," "they," and "you," while "has" is used for the subjects "he," "she," and "John" (a singular third person). The past participle form of the verb follows "have/has."

1) I have studied French. 2) She has eaten octopus. 3) They have gone to Scotland. 4) We have read that book. 5) He has lived here for three years. 6) You have known David for ten years. 7) We have been here for two weeks. 8) I have lost my keys. 9) He has drunk too much coffee. 10) They have missed the train. 11) She has gone to Peru. 12) We have eaten too much chocolate. 13) I have had breakfast this morning. 14) John has missed the train. 15) Lucy has cooked breakfast. 16) They have written to the politician. 17) You have found your wallet. 18) I have met his mother. 19) We have tried roller-skating. 20) She has passed the exam.