1) Present Perfect
2) Form
3) Positive: subject+ have/ has not+ past participle *
a) I have ordered some more office paper.
b) He has sent the invoice to the wrong person.
4) Negative: subject + have / has not + past participle*
a) We have not received your payment.
b) She has not been to Nepal
5) Question: (Question Word) + have/ has + subject + past participle*
a) How you contacted the suppliers?
b) Why has he gone to Canada?
6) Short answer: Don´t repeat the past participle
a) Have you contacted the suppliers?
b) Yes, I have.
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