现在完成进行时.doc

现在完成进行时教学目标：1 复习回顾现在进行时和现在完成时2 学习现在完成进行时3 区别现在完成时和现在完成进行时知识回顾现在进行时概念：现在进行时表示现在（说话的瞬间），或现阶段正在进行或发生的动作。就是“正在进行时”。（也叫现在进行时）结构：现在进行时的构成是:主语+be+v.ing现在分词形式基本用法：A表示现在( 指说话人说话时) 正在发生的事情。例：We are waiting for you.B. 表示现阶段正在进行的动作，说话时未必正在进行。例：Mr. Green is writing another novel现在完成时概念：现在完成时表示到说话时为止（或到现在为止）已经发生或完成了（不一定结束）的动作或状态。结构：现在完成时的构成是:主语+have/has +v.(过去分词）基本用法：A表示过去发生的某一动作对现在造成的影响或结果。常用时间状语（already/yet/just） China has already made great progress in science and technology.中国在科技方面已经取得了巨大进步。I havent finished my homework yet.我还没有完成作业。B表示过去已经开始，持续到现在，而且还可能继续下去的动作或状态。常用时间状语（lately/recently/since/for a long time/so far/in the past/last few weeks）I have collected many stamps since last year.从去年开始我收集了许多邮票。Prices have risen sharply over the past few months.在过去的几个月里价格急剧上涨。C表示过去曾发生过一次或多次的情况，也可以说是一种经历。常用时间状语（often/never/ever/once/twice/before/Its the first/second time that.）I have been to the United States three times.我去过美国三次。Have you ever been to the Great Wall?你到过长城吗？现在完成进行时概念：现在完成进行时是一兼有现在完成时和现在进行时两者基本特点的时态。由于它有现在完成时的特点,所以它可以表示某一动作对现在产生的影响或结果。由于它有现在进行时的特点,所以它也可以表示某一动作的延续性、临时性、重复性、生动性乃至感情色彩。结构：现在完成进行时的构成是: 主语+have（has）been+动词-ing肯定式I/We have been working.疑问式Have you been working？简略回答Yes，I/we have.No，I/we havent.肯定式He/She/It has been working.疑问式Has he/she/it been working？简略回答Yes，he/she/it has.No，he/she/it hasnt.基本用法：A表示动作从过去某一时间开始一直延续到现在，可能刚刚结束，也可能还在继续进行。People in the southwestern areas have been suffering from serious drought in the past few months.在过去的几个月里，西南地区的人们一直遭受严重旱灾的影响。We have been studying English since three years ago.三年以来，我们一直学英语。B表示某一动作在断断续续地重复，常带有感情色彩。He has been saying he is tired of his work recently.近来他老是说厌倦了自己的工作。I have been visiting him several times this week.这个星期我看过他几次了。C表示“刚才”或“近来”发生的动作。这一动作到说话时已经结束，而且一般不再继续下去。Im very tired. Ive been painting the room.我很累，我一直在粉刷房间。My clothes are all wet. Ive been working in the rain.我的衣服全湿了，我刚才一直在雨中干活。 现在完成时和现在完成进行时的区别1现在完成时强调动作在过去已经完成，但对现在有影响或其结果现在仍然存在；而现在完成进行时着意于动作本身，是一种持续的(但不一定是结束了的)活动。I have written a book on UFO.It was finished last year.我写了一本关于UFO的书，这本书是去年写完的。I have been writing a book on UFO.I should be able to finish it early next year.我一直在写一本关于UFO的书，我应该在明年年初就能写完。2现在完成时陈述事实；而现在完成进行时则强调动作在不久以前持续进行的情景，并带有感情色彩。My father has lost his keys.我父亲把钥匙丢了。(陈述事实)My father has always been losing his keys.我父亲老是弄丢自己的钥匙。(含责怪或无奈之意)3现在完成时既可用于状态性动词，也可用于动作性动词；而现在完成进行时通常只用于动作性的动词。I have had this computer for 10 years，with which I have written plenty of articles.我已拥有这台电脑10年之久了，并用它写了大量的文章。I have been writing articles with this computer for 10 years.10年来我一直用这台电脑创作。4有少数动词(如work，study，live，teach，stay等)在表示持续一段时间时用这两种时态含义差不多(只是用现在完成进行时更强调动作的持续性)。How long have you worked/been working here?你在这儿工作多长时间了？Ten years.10年了。练习A. Correct the following sentences1. All these years they are contributing articles to our magazine._2. I have been drinking five cups of coffee this afternoon._3. What have you been doing before you left Oxford? _4. Its a good job. Have you done it all by yourself? _5. Its a long time since you come to see me. _6. Alice didnt see much of Henry lately. _7. Im glad to tell you that you passed the exam. _B. Complete the following sentences with the right form of the verbs given.1. You know, I _ (look) for a job for three months, and this is my first formal interview.2. My sister _ (stay) in Beijing for three months last year.3. The little boy is dirty all over because he _ (play) in the mud all the morning.4. I _ (wonder) if you were free this afternoon.5. Here he is! We _ (wait) anxiously for him since last night.C. Make the best choices.( )1. Im sure Andrew will win the first prize in the final. I think so. He _ for it for months.A. is preparing B. was preparingC. had been preparing D. has been preparing( )2. By the time he realizes he _ into a trap, itll be too late for him to do anything about it.A. walks B. walked C. has walked D. had walked( )3. So far this year we _ a fall in house prices by between 5 and 10 percent. A. saw B. see C. had seen D. have seen( )4. Cathy is taking notes of the grammatical rules in class at Sunshine School, where she _ English for a year. A. studies B. studied C. is studying D. has been studying( )5. Danny _ hard for long to realize his dream and now he is popular.A. works B. is working C. has worked D. had worked( )6. 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( )7. The unemployment rate in this district_ from 6% to 5% in the past two years. A. has fallen B. had fallen C. is falling D. was falling( )8. Now that she is out of job, Lucy _ going back to school，but she hasnt decided yetA. had considered B. has been considering C. considered D. is going to consider( )9. _ you _ him around the museum yet? (2007江苏)Yes. We had a great time there.A. Have ; shown B. Do ; show C. Had; shown D. Did; show( )10. Hi, Tracy，you look pale.I am tired. I _ the living room all day.A. painted B. had painted C. have been painting D. have paintedKey：A.