1、Present perfect continuousPresent perfect continuous现在完成进行时现在完成进行时 一、一、definition(定义定义)表示某动作从过去某个时间开始，一表示某动作从过去某个时间开始，一直延续到现在，并且还有可能持续下去。直延续到现在，并且还有可能持续下去。二、结构二、结构“have/has been+现在分词现在分词”构成。构成。销售量一直减少得很厉害。销售量一直减少得很厉害。Sales have been dropping off badly.我一直等了一个半小时了。我一直等了一个半小时了。I have been waiting for
2、an hour and a half.那些猫叫了半天了。那些猫叫了半天了。Those cats have been screaming for hours 我们等他等了两个小时。我们等他等了两个小时。We have been waiting for him for two hours.三、主要用法三、主要用法 1.表示表示“持续持续”：即表示一个从过去某时开始一直持续的动即表示一个从过去某时开始一直持续的动作，这动作可能刚刚停止，也可能还在进作，这动作可能刚刚停止，也可能还在进行。行。她一直在修剪玫瑰。她一直在修剪玫瑰。She has been pruning the roses.她很累。她干
3、了一早晨了。她很累。她干了一早晨了。She is very tired.Shes been working all morning.2.表示表示“重复重复”即表示在一段持续的时间内动作的多次重即表示在一段持续的时间内动作的多次重复，而这个重复的动作在说话时并不一定复，而这个重复的动作在说话时并不一定在进行。在进行。我们一直犯这样的错误。我们一直犯这样的错误。Weve all along been making mistakes like this.一星期以来吉姆每天晚上给詹妮打电话。一星期以来吉姆每天晚上给詹妮打电话。Jim has been phoning Jenny every night
4、 for the past week.现在完成进行时与现在完成时的区别现在完成进行时与现在完成时的区别 1.现在完成时强调动作的完成，现在完成时强调动作的完成，而现在完成进行时强调动作的延续，而现在完成进行时强调动作的延续，因此，表示动作的完成，只能用现在因此，表示动作的完成，只能用现在完成时，而不能用现在完成进行时。完成时，而不能用现在完成进行时。如：如：He has changed his idea.他改变了想法。他改变了想法。2.在表示动作的延续时，虽然既可用在表示动作的延续时，虽然既可用现在完成时，也可用现在完成进行时，现在完成时，也可用现在完成进行时，但现在完成进行时强调动作的进行。
5、但现在完成进行时强调动作的进行。因此在需要明确表示动作还要持续下因此在需要明确表示动作还要持续下去时，应用现在完成进行时。去时，应用现在完成进行时。如：如：We have been studying here for two years.我们在这儿已经学习了两年了。我们在这儿已经学习了两年了。3.在许多情况下，现在完成时表示动作已经完成，在许多情况下，现在完成时表示动作已经完成，而现在完成进行时却并非如此而现在完成进行时却并非如此。如：。如：He has cleaned the window.他把窗户擦干净了。他把窗户擦干净了。(动作已完成动作已完成)He has been cleaning
6、the window.他一直在擦窗户。他一直在擦窗户。(动作不一定完成动作不一定完成)4.有些有些静态动词静态动词只能用于现在完成时，一般不能只能用于现在完成时，一般不能用于用于现在完成进行时现在完成进行时。如：如：Ive known him for many years.我认识他有许多年了。我认识他有许多年了。The war has lasted for a long time.这场战争持续了很长时间。这场战争持续了很长时间。5.有少数动词有少数动词(如如live,work,teach,study等等)用两种时态都可以，意思差别不大。用两种时态都可以，意思差别不大。如如：Ive lived
7、been living here for 30 years.我在这儿住了我在这儿住了30年了。年了。How long have you worked been working here?你在这里工作多久了你在这里工作多久了?6.现在完成时与现在完成进行时的相通性：现在完成时与现在完成进行时的相通性：在表达一个从过去开始而现在仍在继续或在表达一个从过去开始而现在仍在继续或刚刚结束的动作时，某些动词既可以用现刚刚结束的动作时，某些动词既可以用现在完成时，也可以用现在完成进行时在完成时，也可以用现在完成进行时，如，如expect,hope,learn,lie,live,look,rain,sleep
8、,sit,snow,stand,stay,study,teach,wait,want,work等。如：等。如：你学习英语多久了你学习英语多久了?正正：How long have yon learnt English?正正：How long have you been learning English?他已经睡了十个小时了。他已经睡了十个小时了。正正：He has slept for ten hours.正正：He has been sleeping for ten hours.Activity2 complete the passage with the correct form of the
9、 verbs in brackets have been hearing has been making is moving have been flying have been given have been usingActivity3 look at the charts and make sentences using the present perfect continuous tenseThe number of trees _in the last 20 years.has been increasingActivity3 look at the charts and make
10、sentences using the present perfect continuous tenseDesert areas _in the last 20 years.have been reducingActivity3 look at the charts and make sentences using the present perfect continuous tenseButterfly population _has been increasingin the last 20 years.1.Tom _ in the library every night over the
11、 last three months.A.worksB.worked C.has been working D.had been working 2.Now that she is out of a job,Lucy _ going back to school,but she hasnt decided yet.A.had considered B.has been considering C.considered D.is going to considerC B 3.Only when the English class began _ that he had left his book
12、 at home.Ahad he realizedBdid he realize Che realizedDwas he realizedB 4.Certain information can come as a shock when information we _ is actually exposed to be untrue.Atrusted Bwere trusting Cwould trustDhad trustedA 5.I wont tell the student the answer to the math problem until he _ on it for more
13、 than an hour.A.has been working B.will have worke C.will have been working D.had worked 6.Cathy is taking notes of the grammatical rules in class at Sunshine School,where she _ English for a year.A.studiesB.studied C.is studyingD.has been studyingA D 7.Amateur astronomer David Bates _ at the moon t
14、hrough his telescope last night when he got a big surprise.AlookedBwas lookingChad looked Dwould lookB 8.I have got a headache.No wonder.You _ in front of that computer too long.A.work B.are working C.have been working D.Worked 9.Im sure Andrew will win the first prize in the final.I think so.He _ f
15、or it for months.A.is preparing B.was preparing C.had been preparing D.has been preparingC D 10.Its reported that Xiamen University _ more than 400,000 talents for our country in the last 100 years.AcultivatesBcultivated Chas cultivatedDhad cultivatedC 11.Excuse me,Marcia,a reporter from Vanity Fair
16、 _ all day.Could you speak to her now?A.phonesB.has phone C.has been phoning D.phoned 12.Over the past decades,sea ice _ in the Arctic as a result of global warming.A.had decreased B.decreased C.has been decreasing D.is decreasing C C 13.Over the last decade,the government _ hard at using advertisem
17、ents to educate the public on fighting AIDS.Ahad workedBhave worked Cworked Dwas workingB 14.Why,Jack,you look so tired!Well,I _ the house and I must finish the work tomorrow.A.was paintingB.will be painting C.have painted D.have been painting 15.Mother wanted to be a good provider,a role she _ sinc
18、e her marriage to Father.A.shouldersB.shouldered C.is shouldering D.has been shoulderingD D 16.Joseph _ to evening classes since last month,but he still cant say“Whats your name?”in Russian.A.has been goingB.went C.goes D.has gone 17.I have to see the doctor because I _ a lot lately.A.have been coug
19、hing B.had coughed C.coughed D.coughA A 18.Tom,you look so tired!-Well,I _ the house all afternoon and I must finish the work tomorrow.Apainted Bhave been painting Chave painted DpaintB 19.I arrived late and missed the flight.I _ the traffic to be so heavy.Ahadnt expected Bhavent expected Chadnt bee
20、n expected Dhavent been expectedA 20.Hi,Tracy,you look tired.I am tired.I _ the living room all day.A.painted B.had painted C.have been painting D.have painted 21.We _ on this project for four hours.Lets have a rest.A.are workingB.have been working C.worked D.had workedC B 22.Tom,as well as his parents,_ in China over the past five years.Ahave been living Bhas been living Care living Dis livingB
