现在完成时的被动式.ppt

;1. Present perfect tense (现在完成时) Structure：have/has + p.p ;be done + have/has done ;The present perfect passive voice? 1. The subject is not the performer of the action, but the bearer. 2. The action is finished by the time of talking. 3. The action started in the past, and it last until now. It may last longer to the future time. ;1.Phrases which contain prepositions cant left out the prepositions.介词词组不可把介词省去 He has thought of a way of solving the problem. 2. Intransitive verbs dont have the passive voice,such as take place, arrive, become, disappear ,etc . 不定式没有被动态 The accident which was happened yesterday surprised me. ;1.When well get another holiday ____ yet. A. are not decided B. have not been decided C. is not being decided D. has not been decided 2. Betty___ injured since last Saturday. A. has been 　　 B. was C. is 　　　　　 D. has;Let’s summarize！;