Unit 4Discover useful structures (现在完成进行时)ppt课件-（2019版）新人教版选择性必修第三册高中英语.pptx

1、Period 3 Discovering useful structuresThe Present Perfect Continuous tenseUnit 4 ADVERSITY AND COURAGE1.Enable the Ss to master the usage of the Present Perfect Continuous tense2.Enable the Ss to use the relevant grammar flexibly and authentically in the real situation _n.(轮船、飞机等上面的)全体工作人员；专业团队；一群人

2、_adj.残酷的；残忍的；冷酷的 _adj.深入的；彻底的；细致的 _n.家具 _.不幸地；遗憾地 _adv.幸运地 _.(狗)吠叫；吠叫声 _.球拍；蝙蝠 vi.&vt.用球板击球；挥打；拍打crew /kru:/ cruel/krul /thorough/ r /furniture /fnt(r) / unfortunately / nftntli/advfortunately/ftntli/ bark/ bk/vi.&nbat / bt / n _adj.潮湿的；湿气重的 _n.娱乐；消遣；游戏 _n.指导；引导；导航 _n.广告活动；广告业 _vt.&vi.公布；宣传；做广告 _adj

3、.公司的；法人的；社团的 _adj.痛苦的；令人难受的 _n.& vi.航海；航行 _n.海军；海军部队 _adj.相当不错的；正派的；得体的 damp / dmp /recreation /rekrien / guidance/ adns /advertising /dvtaz /advertise /dvtaz / corporate/ kprt /miserable /mzrbl / voyage/ vd /navy / nevi / decent / disnt / 单元语法自我探究1.What is the tense of the sentence below?This is th

4、e adventure that I have been dreaming of.2.Find more examples containing this tense:(1).We are now camped on the ice and we have been managing to survive, but spring is coming, and the ice will soon begin to melt.(2）. We have been struggling for days, but things on Elephant Island are going from bad

5、 to worse.3.Question: what is the function of the present perfect continuous tense?1.to talk about action that started in the past and stopped recently. There is usually a result now.2.to talk about action that started in the past and is continuing now. This is often used with for or since.key: the

6、present perfect continuous tense. 1 现在完成进行时概述 现在完成进行时表示过去发生的动作或状况一直持续到现在，这个动作可能仍在继续进行或刚刚结束。现在完成进行时由“have/has + been + 现在分词”构成。 肯定句：主语 + have/has + been + 现在分词. 否定句：主语 + have/has + not + been + 现在分词. 疑问句：Have/Has + 主语 + been + 现在分词.? 疑问代词/ 疑问副词 + have/has +（主语 +）been + 现在分词.? Ive been trying to find

7、out her telephone number. 我一直在查问她的电话号码。 They have been widening the road. 他们在拓宽这条路。现在完成进行时研析单句语法填空（1）My eyes ache. I （stay） in front of the computer all the afternoon. （2）He （do） this in order to repay the boys kindness. （3）I （learn） English since three years ago. （4）You know，I （look） for a job for

8、three months，and this is my first formal interview.have been stayinghas been doinghave been learninghave been looking2. 现在完成进行时的用法1）表示过去发生并持续到现在的动作How long have you been learning English? 你学习英语多久了？ Tom has been playing the online games for more than twenty hours. 汤姆玩网游已经超过二十个小时了。2）表示到目前为止的一段时间内重复进行的

9、活动The old man has been repairing cars for thirty years. 这个老人修汽车修了三十年了。Jack has been practising Tai Chi for more than a year. 杰克练太极一年多了。（3）表示根据直接或间接的证据而得出结论His eyes are red. He has been working too hard recently. 他的眼睛红了，准是他最近工作太辛苦了。I have got a headache. 我头痛。 No wonder. You have been working in front

10、 of that computer too long. 不足为奇。你在那台电脑前工作太久了。（4）表达某种感情色彩:现在完成进行时有时带有强烈的表扬或厌恶等感情色彩。Weve been looking forward to our summer vacation. 我们一直盼望着暑假。学法点拨以下几类动词不能用于现在完成进行时： 表示感官、感觉：see，hear，smell 等； 表示爱憎：love，prefer，mind 等； 表示希望、意愿：wish，want，desire 等； 表示相信、猜想：believe，think，suppose 等； 非延续性动词。 3 现在完成进行时与现在完成

11、时的区别（ 1）现在完成时强调完成和影响，现在完成进行时强调未完成和 动作。 Ive been doing my homework. 我一直在做家庭作业。（还在做） Ive finished my homework. 我已做完家庭作业了。（已完成） （2）现在完成时经常表单个事件，现在完成进行时可表重复事件。 Julia has gone to the library. 朱莉娅去图书馆了。（单个事件） Julia has been going to the library for a year. 朱莉娅在一年间经常去图书馆。（重复事件） （3）现在完成时通常只陈述事实，而现在完成进行时含感情色

12、彩。 What have you done? 你做什么了？（仅是问问） Where have you been? I have been waiting for you in the rain for two hours. 你去哪里了？我在雨中等了你两个小时。（表示不满） （ 4）表重复时，现在完成时强调成果，讲次数；现在完成进行时强调持续，不讲次数。I have sent thirty e-mails this morning. 我今天上午发了三十封电子邮件。I have been sending e-mails this morning. 我今天上午一直在发电子邮件。（ 5）不用于进行时态

13、的动词通常也不用于现在完成进行时，但它们可以用于现在完成时。The war has lasted for a long time. 这场战争持续了很长时间。（ 6）现在完成进行时不用于被动语态。若要用，可用现在完成时的被动语态代替。The house has been painted for a month. 房子已经粉刷了一个月了。单句语法填空 （1）It （rain） every day this month. （2）So far this year we （see） a fall in house prices by between 5 and 10 percent. （3）I （dri

14、nk） five cups of coffee this afternoon. （4）Now that she is out of work，Lucy （think） about going back to school，but she hasnt decided yet. （5）He is the most creative man that I （meet）. （6）All these years we （try） to get in touch with him. 完成句子 （7）We （已经打扫了房屋）. You may come in now. （8）Since that unfortunate accident last week， I _ （一直睡得不好）. （9）She （一直睡）for 6 hours and still cant wake up. has been raininghave seenhave drunkhas been thinking have methave been trying have cleaned the househavent been sleeping well has been sleeping Homework Finish the exercises on the page41 and workbook