现在完成时的被动语态.pptx

Unit 3 GrammarThe Present Perfect Passive Voice第1页，共25页。Sentences from this unit:1. Over time I have been changed quite a lot.2. First as a PC (personal computer) and then as a laptop, I have been used in offices and homes since the 1970s.3. Over time my memory has developed so much that, like an elephant, I never forget anything I have been told! 第2页，共25页。4. Since the 1970s many new applications have been found for me.5. I have also been put into robots and used to make mobile phones as well as help with medical operations.6. I have even been put into space rockets and sent to explore the Moon and Mars.第3页，共25页。 4. Over time I ________________ quite a lot.5. First as a PC (personal computer) and then as a laptop, I _____________ in offices and homes since the 1970s.go Ready?have been changedhave been used第4页，共25页。6. Over time my memory has developed so much that, like an elephant, I never forget anything I _____________!7. Since the 1970s many new applications ______________ for me.8. I _____ also ________ into robots and ____ to make mobile phones as well as help with medical operations.9. I ____ even ________ into space rockets and ____ to explore the Moon and Mars.have been toldhave been found have been putused have been put sent 第5页，共25页。1. Paper money ______ for over a thousand years. A. used B. has been used C. has used D. is using2. — ______ the letter ______ to Mr. Black? — No. It’s still on the desk. A. Has; given B. Will; be given C. Was; given D. Has; been given第6页，共25页。3. Great changes ______ in my hometown and a lot of factories ______. A. have taken place; have been set up B. have been taken place; are being set up C. are taken place; had been set up D. had taken place; will be set up第7页，共25页。现在完成时的被动语态现在完成时的被动语态表示动作发生在过去, 到现在已经完成或对现在仍有影响。The structure of the present perfect passive voice is: have / has + been + v-ed第8页，共25页。现在完成时的被动语态同它的主动语态一样，强调过去的动作对现在造成的影响或结果，