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1、Unit 5 Meeting your ancestorsPart III Grammar (现在完成进行时)一、学习目标 1.熟练掌握现在完成进行时的含义，结构，用法及相关的时间状语 ；2.能在具体的语境中熟练运用现在完成进行时 。二、自主预习一：现在完成进行时含义：1.动作自过去某时开始，一直延续到现在，并且还将持续下去；2.动作从过去某时开始，一直延续到说话时刻，可能刚刚结束。进行时 ：I am reading the book. （正在读）完成时 ： I have read the book. （ 已经读过）现在完成进行时：I have been reading the book. （
2、过去到截至说话为止，一直在读）二：现在完成进行时结构：1)肯定句: _ （从过去到现在）一直在做某事(1)我在这坐了一个下午了。 _(2) 他弟弟十岁起就一直收集各种各样的邮票。_.2)否定句: _ 没有一直在做某事(1) 我一个星期没有给花浇水了。 _(2) 这些年，他都没有一直在这教书。_3) 疑问句：_(1)你一直在写一本小说吗？_(2)他一直给你写信吗？_三. 现在完成进行时用法： 1) 现在完成进行时可以表示一个从过去某时开始一直在进行并持续到现在的动作。这个动作刚刚结束，对现在有影响。Im tired because Ive been running. 我很累因为我一直跑到现在。（
3、强调动作一直进行并持续到现在）对比：Im tired because Ive run. 我累了因为我跑了。（强调动作已完成）2.）现在完成进行时可以表示一个从过去某时开始一直持续到现在的动作。这个动作现在仍在继续中。I have been reading for 2 hours. I am still reading now. 3）和进行时一样，现在完成进行时也往往带有感情色彩（如赞扬、厌恶等）。 What have you been doing all the time? (这半天你在干什么？）4） 表示从过去到现在反复发生的动作 You have been saying that for
4、five years. (这话你已经说了有五年了。）四：现在完成进行时的时间状语 1）现在完成进行时通常 和“for”或“since”所引导的时间状语连用。_ from my parents for two days. 这两天一直在等我父母的信。雨已经下了三个小时： _ since 2004. 自从2004年以来，我们就一直在这里学习。 2）现在完成进行时还可以于these few days, this week, all the time，all night, all the morning, all ones life, during the night, recently等连用：_ al
5、l this morning. 我写了一上午的信。_all my life. 这个我做了一辈子啦。Recently he _quite regularly. 近来他都按时做作业。三、当堂检测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 preparing C. had been preparing D. has been preparing2. I have got a headache. No wonder.
6、 You_ in front of that computer too long. A. work B. are working C. have been working D. worked3. 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 painted4. Now that she is out of job, Lucy _ going back to school，but she hasn t
7、 decided yet.A. had considered B. has been considering C. considered D. is going to consider5. Im sure Andrew will win the first prize in the final. I think so. He _ for it for months. A. is preparingB. was preparing C. had been preparing D. has been preparing6. Where have you been? We _ for you eve
8、rywhere . A. look B. were looking C. have been looking D. had been looked7. You know, I _or three months, and this is my first formal interview. (look) 你知道的，我这三个月一直在找工作，这是我第一个正式的面试。8. The little boy is dirty all over because he _ in the mud all the Morning. (play) 这个小男孩浑身都是脏的，因为他一上午都在泥巴里玩。9. Here he is! We _ for him since last night.(wait)他在这里啊！我们自从昨晚就一直在这里等他。10. Cathy is taking notes of the grammatical rules in class at Sunshine School, _ English for a year. （study）Cathy正在Sunshine学校的课堂上做语法规则笔记，在那里她学了一年英语了。2
