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课件网) 新人教版选择性必修三Unit 4 Discover useful structures The present perfect continuous tense 现在完成进行时 结构 常用的时间状语 1 2 现在完成进行时和现在完成时的区别 3 4 用法 01 现在完成进行时的用法 翻译以下句子，补全方框下的小题。 1) ...this is the adventure that I have been dreaming of. 2) We are now camped on the ice and we have been managing to survive... 3) We have been struggling for days, but things on Elephant Island are going from bad to worse. The Present Perfect Continuous Tense 基本含义：表示动作从过去某一时间开始一直持续到现在，可能刚刚停 止，也可能仍在继续。 基本结构：“have / has been + 现在分词” Present Past Future 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，强调动作不间断。 1) How long have you been learning English 你学习英语多久了？ 2) 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。 3) I've been writing letters all this morning. 整个上午，我一直在写信。 4) Tom has been painting the wall for three hours. 汤姆刷墙刷了三个小时。 2. 表示到目前为止的一段时间内重复进行的活动 1) The old man has been repairing cars for thirty years. 这个老人修汽车修了三十年了。 2) Jack has been practising Tai Chi for more than a year. 杰克练太极一年多了。 3) He has been saying for a year that he will study abroad. 整整一年他都在说要出国学习。 4) Alice has been looking for a job for three months. 三个月来，爱丽丝一直在找工作。 1) 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。 2) —I have got a headache. — No wonder. You have been working in front of that computer too long. 我头痛。不足为奇。你在那台电脑前工作太久了。 3. 表示根据直接或间接的证据而得出结论 4. 表达某种感彩（喜欢或厌恶） We've been looking forward to our summer vacation. 我们一直盼望着暑假。 常用时间状语 现在完成进行时: all the time, this week/morning, all night, these few days, over the past xx years , for…, since…等。 现在完成时： already, ever, yet, for…, since…, over the past xx years They have already built an overpass over the Renmin Road. They have been building an overpass over the Renmin Road these days. 02 现在完成进行时与 现在完成时的区别 【相同点】 表示延续性，且都有延续性的时间状语时，两者用法差不多。现在完成进行时更强烈暗示动作或状态的延续，完成时表示动作可能延续。 I have been teaching for two years. 我教了两年书。（未来持续) I have taught for two years. 我教了两年书。（可能延续） 1. 现在完成进行时可以表示动作的重复，而现在完成时一般不表示重复性。 1) Have you been meeting him recently 你最近常和他见面吗？ 2) Have you met him recently 你最近见过他吗？ 1) I have been waiting for you for two hours. 我一直等了你两个小时。(可能表示不满) 2) I have waited for you for two hours. 我等了你两个小时。(说明一个事实) 2. 现在完成进行时有时含有感彩，而现在完成时平铺直叙，不带感彩。 1) Who has been eating the oranges 谁一直在吃橘子呀？(强调动作：一直在吃) 2) Who has eaten the oranges 谁把橘子吃了？(强调吃得一个不剩) ... ...
