Present perfect tense:she has told mother that she is going to the party.
why have they blocked the main street again?
have you had dinner yet?
present perfect continuous: natasha has been playing the piano since she was four.
i have been walking in the rain,so my clothes are wet.
past perfect: the shops had already closed by the time I reached the market.
past perfect continuous: Naresh had been working on his biology project when I went to see him.future perfect tense:Do not worry about the books;you will have received all of them by wednesday.
future perfect continuous:By the end of this year, she will have been learning calligraphy for four years.