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1、人教课标版人教课标版 高二高二 选修选修 8Unit 5 The Present Perfect Tense 现在完成时现在完成时:基本用法基本用法 现在完成时表结果现在完成时表结果,他的动作发生他的动作发生在过去在过去,但是对现在有影响但是对现在有影响,而这种影响而这种影响却往往是说话人的兴趣所在。现在完成却往往是说话人的兴趣所在。现在完成时跨越两个时间时跨越两个时间,一个是过去一个是过去,另一个是另一个是现在。现在。Lead-ine.g.我从我从1975年起就学英语。年起就学英语。I have studied English since 1975.自自12世纪以来世纪以来,中国就使用彩色印
2、刷中国就使用彩色印刷了。了。They have done color printing in China since the 12th century.2)表重复。叙述从过去某时到现在或最表重复。叙述从过去某时到现在或最近已在重复的动作。如：近已在重复的动作。如：最近天气变化无常最近天气变化无常,我时常感冒。我时常感冒。The weather has been changeable lately;Ive been having a lot of colds.3)有感情色彩。如：有感情色彩。如：今天真是一个多事之日。今天真是一个多事之日。Too much has been happening t
3、oday.现在完成进行时和现在完成时的比较现在完成进行时和现在完成时的比较:A.未完结性未完结性 Ive cleaned the windows.我把窗户擦干净了。我把窗户擦干净了。Ive been cleaning the windows.我擦窗户来着。我擦窗户来着。(可能窗户尚未擦可能窗户尚未擦完完)B.短暂性短暂性 现在完成时与现在完成进行时都可现在完成时与现在完成进行时都可以表示延续至今的状态以表示延续至今的状态,但完成进行时但完成进行时常表示短暂性。常表示短暂性。A.They have lived in New York.B.They have been living in New
4、York.句句A具有长期性具有长期性,而句而句B具有短暂性。具有短暂性。D.连续性或重复性连续性或重复性 现在完成进行时常常用于表示延续现在完成进行时常常用于表示延续至今的连续性或重复性动作。如：至今的连续性或重复性动作。如：Jim have been phoning Jenny every night for the several month.All these days he has been writing articles to our magazine.结论结论:现在完成进行时主要用于表示现在完成进行时主要用于表示 A.过去开始而且现在仍在进行的动作。过去开始而且现在仍在进行的动作
5、。B.过去开始过去开始,现在刚刚停止的动作。现在刚刚停止的动作。C.现在看到其直接结果的动作。现在看到其直接结果的动作。现在完成时主要用于表示已经完现在完成时主要用于表示已经完成的动作及其与现在的关系。成的动作及其与现在的关系。1.Sam has just finished learning to fly an airplane on a six-month course.(how long)How long have you been learning to fly an airplane,Sam?2.He swam till he felt very tired.He has just s
6、tepped out of the swimming pool.(how long)How long have you been swimming?5.Jiao Yang uses a particular kind of washing powder and his clothes have always been clean and soft.(what)Jiao Yang,what kind of washing powder have you been using that makes your clothes so clean and soft?Consolidation1.Hi,T
7、racy,you look tired.Im tired.I _ in the living room all day.A.painted B.had painted C.have been painting D.have painted3.Although these scientists _ on the project for nearly four years,I dont know how long it will last.A.have been working B.had worked C.were working D.are working 4.Now that she is
8、out of job,Lucy _ going back to school,but she hasnt decided yet.A.had considered B.has been considering C.considered D.is going to consider5.The little boy is dirty from head to foot because he _ in the mud all morning.A.has played B.is playing C.has been playing D.was playing 6.I _ my work by the
9、time the teacher _ back.A.was finished.,came B.shall have finished.,comes C.had finished.,comes D.have finished.,will come 7.I _ to see the film last week because I _ it twice.A.didnt go.had seen B.dont go.have seen C.hadnt go.had seen D.didnt go.have seen10.I _ into the bus when I _ a girl call my
10、name.A.had hardly got.,hear B.had hardly got.,heard C.was no sooner setting.,heard D.did hardly get.,had heard 1.A:-I am sorry I _(keep)you waiting so long.B:-It is all right.I _(read)the newspapers.2.The CCTV _(broadcast)English programmers ever since 1977.用现在完成时和完成进行时填空用现在完成时和完成进行时填空:have kepthave
11、 been readinghas been broadcasting3.You _(feel)better when you _(take)the medicine.4.She said we _(may keep)the book as long as we _(like).5.Please wake me up if I _ still _(sleep)when you _(come).6.My sister _(learn)English since she _(be)a child.She _(speak)English fluently now.will feelhave taken
12、might keeplikedamsleepingcomehas been learningwasspeaks下列各句均有一处错误，请指出并改正。下列各句均有一处错误，请指出并改正。1.The water has been run the whole night.2.2.Hello,Tom.I have looking for you all morning.Where have you been?runningrunbeen3.His cool expression suggested that he want to leave.4.He tried to harm other people,only to ruining himself.5.If only I can speak several foreign languages!wantwantedruiningruincancould 1.Learn useful words and expressions by heart and practice them.2.Finish Ex.1 and 2 on pages 40,79 and 80.Homework