1、选修八 Unit5 Meeting your ancestorsPeriod3 Grammar【要达成的目标】Review the present perfect continuous tenseFinish the exercises【“教”与“学”过程】本堂课使用的电教手段 I.现在完成进行时的构成 have / has been doing sth.II.现在完成进行时的用法（1）现在完成进行时表示从过去某一时间开始一直延续到现在的动作。现在这个动作可能刚刚终止，也可能仍在进行。I have been learning English since three years ago（2）表示
2、重复。现在完成进行时也用来表示一个动作的重复。 She has been saying that for years.（3）表示关切、惊异、赞许、愤怒等感情色彩。Too much has been happening today.He has always been studying hard.III. 现在完成进行时和现在完成时的比较： （1）现在完成时强调过去的动作对现在的影响或产生的结果，而现在完成进行时则更强调动作的延续性。（2）现在完成进行时往往表示动作在重复，现在完成时一般不表示重复性。（3）现在完成进行时比较生动，有时含有明显的感情色彩，而现在完成时往往只说明一个事实，一种影响或
3、结果，平铺直叙，没有什么感情色彩。IV. 注意 （1）表状态，感情，感觉，短暂性动作的动词不能用于现在完成进行时，如: be, have, exist, like, love, hate, see, hear, know, feel, sound,finish, marry get up , come , go, begin, start.（2）常用的时间状语： for一段时间；since, these years, recently, all the time, how long.V. Exercises 1. In the last few years thousands of films
4、_ all over the world. A. have produced B. have been producedC. are producing D. are being produced 2. Tom _ in the library every night over the last three months. A. works B. worked C. has been working D.had been working 3. - We have spent too much money recently. - Well, it isnt surprising. Our fri
5、ends and relatives _ around all the time. A. are coming B. had come C. were coming D. have been coming4. - Why, Jack, you look so tired! - Well, I _ the house and I must finish the work tomorrow. A. was painting B. will be painting C. have painted D. have been painting5. Mother wanted to be a good p
6、rovider, a role she _ since her marriage to Father. A. shoulders B. shouldered C. Is shouldering D. has been shouldering6. Excuse me, Marcia, a reporter from Vanity Fair _ all day. Could you speak to her now? A. phones B. has phoned C. has been phoning D. phoned7. -Im sure Andrew will win the first
7、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 preparing8. 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 study
8、ing9. Few people doubt that the global average temperature_ for at least a century. A. had risen B. rises C. has been rising D. is rising10. You should stop and relax your eyes. You _ all morning. A. had read B. are reading C. read D. have been reading11. This is a picture of the university where my
9、 best friend _ for a year. A. studies B. had studied C. is studying D. has been studying12. Police are now searching for a woman who is reported to _ since the flood hit the area last Friday. A. have been missing B. have got lost C. be missing D. get lost13. - 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 14. The number of foreign students attending Chinese universities_ rising steadily since 1997. A. is B. are C. has been D. have been【课后反思】（教师写成败得失和改进措施，学生写学习体会和存在的问题）