unit1现在完成时.ppt
完成时态完成时态的用法的用法1）现在完成时态表示）现在完成时态表示 过去发生的动作对现在造成过去发生的动作对现在造成的影响或结果的影响或结果。Our teacher has left.We have studied English.I have already finished the homework.He has had his lunch.He has become a doctor.Have/has +过去分词过去分词1.构成构成2.意义意义2）某个动作某个动作从过去已经开始从过去已经开始，一直一直持续持续到现在到现在,还有还有可能持续到将来可能持续到将来，动作的，动作的 持续性要通过持续性要通过一段时间一段时间来表示。来表示。一段时间一段时间的表达方法有的表达方法有 两两 种种:For :+一段时间一段时间 for a year for two weeks for three yearsSince ：过去的某一时刻：过去的某一时刻,since nine since last week 一般过去时态的时间状语从句一般过去时态的时间状语从句,since you came.since you got home.!:for 和和since 所引导的时间状语都表示所引导的时间状语都表示一段时间一段时间.对划线部分提问都用对划线部分提问都用 How long.1）He has been away since last week.2）He has been away for one week.对下列划线部分进行提问。对下列划线部分进行提问。练一练练一练：1.我们买这本书三年了我们买这本书三年了.We have had the book for three years.2.他感冒三天了他感冒三天了.He has had a cold for three days.We bought the book three years ago.He caught a cold three days ago.一般过去时态和现在完成时态可以构成一般过去时态和现在完成时态可以构成 同义句同义句3.自从上星期我借的这本书自从上星期我借的这本书 I have kept the book since last week.4.我成为一个学生两年多了我成为一个学生两年多了.I have been a student for over two years.I borrowed the book last week.I became a student two years ago.5.Mr Black死了三年了。死了三年了。Mr Black has been dead for three years.Mr Black died three years ago.6.小名参军半年了。小名参军半年了。Xiao Ming has been a soldier for half a year.Xiao Ming joined the army half a year ago.7.我们上了我们上了8年学了。年学了。We have been students for eight years.8.下课下课10分钟了。分钟了。The class has been over for ten minutes.9.电影开始了一小时了。电影开始了一小时了。The film has been on for an hour.注：注：含延续性动词的现在完成时的同义句含延续性动词的现在完成时的同义句 转换转换。She began to work ten years ago.She has worked since ten years ago.It is ten years since she began to work.Ten years has passed since she began to work.She has worked for ten years.1.Youve never seen such a wonderful film before,_?A havent you B have you C do you D dont you2.-Ann has gone to Shanghai.-So _ her parents.A has B do C did D have3.I have watched the game.-When _ you _ it?A have watched B do watch C did watch D will watchB D C4.Mr.Green _ in China since five years ago.A lived B has lived C lives D is going to live5.His grandma _ for two years.A died B has been dead C was dead D has died6.Where is Han Mei now?-She _ to Shanghai.She will be back in two days.A has gone B has been C goes D had gone7.-_ to the United States?-No,never,but I went to Canada a few years ago.8.You havent changed your mind,_?A do you B are you C have you D did youBBADCA hasbeen B hasgone C havebenn D havegone9.How long have you _ the football team of the school?A been on B been at C joined D played 10.-Where have you _ these days?-I have _ to Dazhu with my friends.A been,gone B been,been Cgone,been Dgone,gone11.How long have you _ this book?A bought B borrowed C had D lent12.Excuse me,_ you seen the film yet?-Yes,I _ it last night.A have,see B have,have seen C have,seen D have,saw13.He has never ridden a horse before,_?A is he B isnt C hasnt D has heABCDD
