英语课件现在完成时复习[下学期] 新目标[www.ppt

* 现在完成时态基本结构: 主语+have/has+Vpp For example : I have already eaten breakfast. 用法之一: 表示过去发生或已经完成的动作对现在造成的影响或结果,常与already just yet ever never before 等连用. Have you travelled to Beijing before? No, I’ve never travelled there. 用法之二：表示动作发生在过去，并一直延伸到现在，甚至还可能继续延伸下去，常与“for, since”连用.常 用延续性动词：study,live,stay,learn,know,teach,wear, be,keep,have,work,wait. 1). We have studied at this school for 3 years./since 3 years ago. 2). We have lived here since last year. /for one year. *for 和表示一段时间的词组连用. 例如: for three minutes for six hours for nine days for twelve weeks for fifteen months for thirty years *since 和表示过去某一时刻的词或词组连用.另外,since 也可和过去时的句子连用. 例如: since nine o’clock this morning since last Friday since three weeks ago since September since he was eight years old since he came here Fill in the blanks with “for” or “since”: 1.His uncle has been abroad____5 years. 2.How many English words have you learned ______ you came? 3.Uncle Wang has worked in the factory _____ it opened in 1980. 4.They have worked on the farm _____ nearly an hour. 5. The twins have been in China ____ last Sunday. 6. I haven’t got his letter ____a long time. for since since for since for I bought a new bike two days ago. = I have had the new bike for two days. He came to Hawaii one year ago. =He has been in Hawaii since one year ago 瞬间动词不能和for, since 引导的一段时间状语连用，若要用，把它换成对应的延续性动词。 I borrowed the CD player yesterday. =I have kept the CD player since yesterday all one’s life = since one was born during the last two years She ____________here all her life. since she was born. 2) During the last five years, China______________(develop) a lot. has lived has developed 1.He