1、Present PerfectThe present perfect is used for three reasons:1) To describe an action that goes from the past up to the present moment.2) To describe an action that occurred sometime in the past but the exact time is unknown.3)To describe an action that was repeated many times in the past.Contractio

2、ns are usually used with this tense:-Ive lived, youve lived, hes lived, shes lived, etc.第1頁/共14頁P(yáng)resent Perfect Passive VoiceSingularI have been givenYou have been givenHe has been givenShe has been givenIt has been givenPluralWe have been givenYou have been given-They have been given-第2頁/共14頁Most p

3、eople use contractions:SingularIve been givenYouve been givenHes been givenShes been givenIts been givenPluralWeve been givenYouve been given-Theyve been given-第3頁/共14頁1. This house has been given a fresh coat of paint.When was it painted?I dont know.Who painted the house?I dont know.(The present pe

4、rfect passive voice is useful in describing something that happened in the past-but you might not know when or by whom the thing was done.)第4頁/共14頁2. This baby has been given a lot of love and care by its mother.(You may use it for a baby unless you know the baby is a boy or a girl)3. They have been

5、 assigned to work on a big project.4. He has been tied up for several hours. A thief came into his house, tied him up, took his money, and left.第5頁/共14頁5. The Eiffel Tower has been visited by people from all over the world.The present perfect passive is useful when describing something that was done

6、 in the past without a lot of information about who did it, when, how, why, etc.第6頁/共14頁Exercise 1Over time I have been changed a lotPick two sentences from the reading passage on page 18, in the present perfect passive voice.第7頁/共14頁Answers for exercise 1I have been used in officesI have been toldA

7、pplications have been found for meI have also been put into robotsI have even been put into space rocketsGo to exercise two. Answers on next slide.第8頁/共14頁Exercise 2 AnswersA new personal computer has been bought by my friend.My computer has been repaired very quickly by the shop.My computer has jus

8、t been attacked by an unknown virus.The problem has not been solved yet.The companys computers have been given away to a local school.A kind of intelligent robot has been developed by the scientists.第9頁/共14頁Exercise 3Underline the use of the present perfect passive voice in the poem in your workbook

9、.Then fill in the chart in your workbook.Done wellDone badly第10頁/共14頁The poemLook at the way your face has been washedLook at the way your hair has been combedLook at the way your shoes have been cleanedYoud better do them again.Look at the way the flowers have been plantedLook at the way the grass has been cutLook at the way the paths have been sweptI hope that youll come here again.第11頁/共14頁Would you