初中英语人教版八年级下册现在完成时

1、现在完成时The Present Perfect课前热身I. The famous writer one new book in the past two years .A . writes B.wrote C.has written2,I the League for 5 years so far.A. joined B. have joined C. have been in3. Mary and Rose friends since they met in 2000.A.have made B.have been C.made D. have become4. Our country a

2、 lot so far .Yes. I hope it will be even.A . has changed ; well B . changed ; good C . has changed ; better5. you your homework yet ?Yes. I it a moment ago.A .Did; do; finished B .Have; done; finished C .Have; done; have finished讨论展示1、分组讨论,说出以上句子主要用了哪种时态2、你能讲出该时态的构成吗现在完成时一. 根本结构：助动词have/has如去分词done二

3、. 句型：肯定句：主语+have/has如去分词+其他否认句：主语+have/has+not如去分词+其他.一般疑问句：Have/Has+主语+过去分词+其他.简略答语：Yes,主语+ have/has.筒定No,主语 + haven't/hasn't.借定3、请归纳出现在完成时的主要用法,通过哪些词语来提示现在完成时用法1. 表示过去发生或已经完成的某一动作对现在造成的影响或结果.常用的时间状语：already, yet, so far, never, just, before, recently,I have already lost my key.说明过去某时丢的,现在还

4、未找到.你能举例吗2. 表示过去已经开始,持续到现在的动作或状态往往和表示一段时间的状语连用.for+一段时间,since+一段时间I have known him for ten years.I have known him since ten years ago .从开始熟悉到现在延续了十年你能举例吗4、请比较:He has been to the US .He has gone to the US .He has been in the US for three years .5、请看句子： He has come to school for two hours对吗For和since要用

5、延续性动词,如果是短暂性动词要改为相应的延续性动词,例如：leave/go- be away come-be here/be inbuy- have,borrow-keepjoin-be in/a member of die-be dead, begin/start- be on finish- be over5、你能用英语说出他们吗1) 、玛丽上午七点到了学校.2) 、她在学校学习两个小时了.The keys:1) 、Mary got to school at seven .2) 、She has studied at school for two hours.现在完成时与一般过去时的用法比

6、较1、一般过去时表小过去某个时间发生的事、存在的状态或经常发生的动作.说 话的侧重点只在丁陈述一件过去的事情,不强调对 "现在"产生的影响. 如： He visited Guilin in 1998.他1998年参观过桂林.(只说明去桂林的时间)2、现在完成时表示动作发生在过去,对现在造成了影响或产生了结果.不与确 定的过去时间状语连用.如：Jill has bought a new computer.吉尔买了一台新电脑.(着重点是现在有了一台新电脑)3、两种时态的区分(1) 一般过去时的谓语动词用过去式,而现在完成时的谓语根本构成是"助动词have /has以去

7、分词.(2) 一般过去时通常与表示过去的时间状语连用.如：yesterday, last week, two yearsago, just now, in 2002等；而现2完成时贝U常与 just, already, ever, never 等副词和 these days, this week, since., for.等表示一段时间的状语连用.(3)看看以下的几组句子,有什么区别 Have you seen the film?(A)Did you see the film?(B)说明你看过这部电影吗 (A)句强调的是被问者对剧情是否了解；(B)句强 调的是看这部电影的动作是否发生过,并不强

8、调是否知道其内容. How has he done it?(A)How did he do it?(B)说明他是怎么做的这件事(A)句强调的是他做这件事的方式对现在产生了某种影响；(B)句单纯的询问做这件事的方式. He has lived in Beijing for 8 years.(A)He lived in Beijing for 8 years.(B)说明他在北京住了 8年.(A)句讲的是到目前为止他在北京住了 8年,可能还会 继续在北京住下去.(B)句讲的是他在北京住过8年,现在不在北京了.测评提升1、单项选择：1) 、Harry Potter is a very nice fil

9、m. I it twice.A . will see B . have seen C . saw D .see2) 、These farmers have been to the United States .Really? When there ?A . will they go B .did they go C . do they goD . have they gone3) 、Zhou Lang already in this school for two years .A . was ; studying B . will ; study C . has ; studiedD. are

10、; studying4) 、His father the Party since 1998 .A .joined B . has joined C . was in D. has been in5) 、一 Do you know him well ? Sure .We friends since ten years ago .A . were B . have been C . have become D . have made6|、He has been to Shanghai, has he ?A . already B .never C .ever D. still7) 、Hurry u

11、p! The play for ten minutes .A . has begun B . had begun C . has been on D. began8) 、 It ten years since he left the army .A . IsB . has been C . Will be D. was9) 、 Miss Green isn't in the office. She to the library.A .has gone B . went C .will go D . has been10) 、My parents Shandong for ten yea

12、rs.A . have been in B . have been to C . have gone to D . have been2、用适当的时态填空：1) . She(live) here for ten years .2) . Both of them(come) to Hongkong ten days ago.3) . Half an hour(pass) since the train(leave).4) . Mary(lose) her pen .you(see) it anywhere?5) .you(find) your watch yet?6) . -Are you thirsty?-N