Unit 4 语法精讲ppt课件-（2019版）新人教版选择性必修第三册高中英语.pptx

1、Unit 4语法精讲语法精讲The Present Perfect Continuous tense1. 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 + 现在分现在分词词”构成。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 +

2、 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 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。单句语法填空单句语法填空（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 （le

3、arn） English since three years ago. （4）You know，I （look） for a job for three months，and this is my first formal interview.have been stayinghas been doinghave been learninghave been lookingEXAMPLE This is the adventure that I have been dreaming of. Page 38 The last but one line: “ we have been managi

4、ng to survive” Page 39 Line 2: “We have been struggling for days” Look at the sentence in the present perfect continuous tense. Find more examples from the previous text and discuss the function of the tense.PastPresentFutureHe is visiting the doctor.The use of the present perfect continuous tense.

5、have / has been + v-ingWe use present perfect continuous tense for actions that started in the past and continue in the present.PastPresentFutureThe use of the present perfect continuous tense. have / has been + v-ingWe use present perfect continuous tense for actions that started in the past and ha

6、ve just finished but have consequences in the present. 2. 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? She has been burning the midnight oil to prepare for GRE recently. Tom has been playing the online games for more than twenty hours. His brother has been writing this novel s

7、ince last year.2）表示到目前为止的一段时间内重复进行的活动I have been telling you not to make trouble.The old man has been repairing cars for thirty years. Jack has been practising Tai Chi for more than a year. （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. I have got a headache. No wonder.

8、 You have been working in front of that computer too long. Im sure Andrew will win first prize in the final. I think so. He has been preparing for it for months. （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. Too much has been happening today. 学学法法点拨点拨以下几类动词不能

9、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。J

10、ulia 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

11、数；现在完成进行时强调持续，不讲次数。I have sent thirty e-mails this morning. I have been sending e-mails this morning. （ 5）不用于进行时态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. （ 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. 单句语法填空单句语法填空（1）It （rain） every day this mon

12、th. （2）So far this year we （see） a fall in house prices by between 5 and 10 percent. （3）I （drink） 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 w

13、e （try） to get in touch with him. （7）We _（已经打扫了房屋）（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 sleepin

14、g1. You are a great swimmer.Thanks. Its because I _ a lot these days. A. have been practising B. was practising C. would practise D. had practiced(2020天津天津)A2. It doesnt impress like George Washingtons plantation on the Potomac, but Lincolns home in downtown Springfield, Illinois, _(prove) irresisti

15、ble to visitors since it opened to the public.(2021浙江语法填空浙江语法填空)has proved / has proven3. The number of medical schools reached 18 in the early 1990s and _ around that level ever since. A. are remaining B. have remained C. is remaining D. has remained(2020年天津卷年天津卷)DRead each situation and rewrite ea

16、ch a sentence using the present perfect continuous tense.1. The dog started to bark about two hours ago. I really hope it will stop soon.The dog has been barking for about two hours. I really hope it will stop soon.v. 吠叫吠叫2. Steve started to play rugby at the age of eight. Now he has become a profes

17、sional player._n. 橄榄球运动橄榄球运动Steve has been playing rugby since the age of eight. Now he has become a professional player.adj. 潮湿的潮湿的3. Timmy is holding a table tennis bat and his short hair is damp with sweat. He looks a little tired after playing table tennis for two hours._Timmy is holding a table

18、 tennis bat and his short hair is damp with sweat. He looks a little tired because he has been playing table tennis for two hours.n. 球拍球拍4. Diane hasnt got much sleep this week. She looks terrible today._5. I tried to phone you this morning. I must have tried a dozen times before I caught you here.

19、_Diane hasnt been sleeping well this week. She looks terrible today.I have been trying to phone you this morning. I must have tried a dozen times before I caught you here. Complete the sentences below using the correct tenses of the verbs in brackets. Then explain your reasons to your partner.1. For

20、 the whole morning, the board of directors _ (discuss) the resolution to increase wages in the coming year. 2. Jasons only recreation is painting. He _ (learn) how to paint for over five years.has been discussingn. 娱乐；消遣娱乐；消遣has been learningn. 决议；解决；决议；解决；坚定坚定n. 侄子；外甥侄子；外甥3. Even though we lost the

21、 game, we should be proud of ourselves because we _ (try) our best and _ (work) as a team.4. He finally _ (finish) the research paper under his tutors guidance.5. My nephew Sam _ (collect) comic books since he was five. Now he has more than two hundred of them.triedfinishedworkedhas been collectingn

22、. 指导指导n. 广告活动广告活动6. The company _ (launch) an advertising campaign to promote its corporate image. adj. 公司的公司的launched / is launching / has launched现在完成进行时表示动作从过去某一时间开始一直延续现在完成进行时表示动作从过去某一时间开始一直延续到现在，这个动作可能刚刚停止，也可能还在进行到现在，这个动作可能刚刚停止，也可能还在进行,常常带有一定的感情色彩。带有一定的感情色彩。 其构成为其构成为“have / has + been + 动词动词-ing形式形式”。eg Ive been painting the door this morning.They have been working very well this term.Unit 4谢谢观看谢谢观看