高中英语Module8 unit5 grmmr nd useful structures学案导学.doc

Module8 unit5 Grammar and useful structures学案导学PeriodIVLearning aims: 1. Review the usages of the Present Perfect Continuous Tense 2. Comparing the Present Perfect with the Present Perfect Continuous Tense, let students find out their differences. 3. Make a thorough enquiry toghter,train their ability of preparing.Learning important and difficult points: Comparing the Present Perfect with the Present PerfectContinuousTense, students find out their differences.Learning methods: Preparing for the lesson before, work toghter during class, reach the aims during theclass.Learning procedure:STEPI Preparing for the lesson before class., do the exercises on （SB P40 Discovering useful structures）STEPII Leading to the class. Answer the preparation work about（SB P40 Discovering useful structures）one by one.STEPIII Make a thorough enquiry alone and toghter.（s-s,s-t;学生个人预习，学生合作探究，师生合作探究）【例证分析】现在完成进行时（1）结构由“have/has been+动词的现在分词”构成，表示从过去某时开始，一直持续到现在的动作，可能刚刚停止，也可能还在继续进行。例如：We have been looking for you for an hour.我们找了你一个小时。（动作刚停止）She has been teaching English since she graduated.她毕业后一直在教英语。(动作还在继续进行)We have been going over maths these days.我们这些天一直在复习数学。（动作还在继续进行）（2）有时现在完成进行时不是指某动作一直在不停的进行，而是表示一直到说话时为止的一段时间内一再重复的动作，常常带有感情色彩。例如：She has been saying that 20 times. 这话她已经说了20遍了。He has been calling on her several times this week. 他这个星期几次来看他。We have been having a lot of rain recently. 最近雨水很多。（3）有时现在完成进行时表示刚才或近来发生的动作，也可表示知道说话时为止的一段时间内发生的动作，这一动做到说话时已经结束，而且一般不再继续下去；这种用法主要表示某一动作所产生的结果或对现在的影响。例如He has been working too hard.他工作太辛苦了。The girl has been playing with toys.那个女孩一直在玩玩具。You have been cleaning the classroom, I think.我想你刚才在打扫教室吧。【总结概述】现在完成进行时主要用于表示：1. 过去开始而且现在仍在进行的动作。2. 过去开始，现在刚刚停止的动作。3. 现在看到其直接结果的动作。【合作探究】（Teacher and students work toghter.）现在完成时和现在完成进行时现在完成时和现在完成进行时均可表示从过去开始一直持续到现在的动作，有时两者可换用。这两种时态的主要区别有两个 ：其一：现在完成时表示动作已完成，着重结果；现在完成进行时表示动作的进行，强调动作的持续性。比较： I have watered the flowers.我已经给花浇过水了。（已完成：你不必浇了） I have been watering the flowers.我一直在给花浇水。（未完成：一直在浇）其二：状态动词、知觉动词或情感动词如：see, feel,know,love 等，不可用于现在完成进行时，但可用于现在完成时，例如：I have known her for a long time.我认识她已经很久了。I havent seen him theses days.这些日子我没有见过他。【实战演练】- I _ so busily recently that I _ no time to help you with your math. - Thats OK. I can manage it by myself. A. have been working; have B. have worked; had C. am working; will have D. had been working; had had 2. - Have you finished the report? - No. I _ it all this week. A. will do B. had done C. have done D. have been doing3. It was some time _ we realized the truth. (2005山东24) A. when B. until C. since D. before 4. It_ for three hours and the ground is too wet to play on, so the sports meet_A. was raining; has been put off B. has been rainin; has been put offC. has rained; is put off D. has been raining; has put off5-Hi Mary, you look tired. -Im tired. I_the living room all day.A. painted B. had painted C. have been painted D.have painted6. The craxy fans _ patiently for two hours, and they would wait till the movie star arrived.A. were wating B. had been waiting C. had waiting D. would wait7. Since it ws started in 1989, Hope Project_ over 1.5 billion yuan contributed from home and abroad.A. had received B. has received C. received D. receives8. The price_, but I doubt whether it will remain so.A. having gone down B. will go down C. has gone down D. going downSTEPIV Consolidation of grammar and useful structures to do the synchronous exercises.STEPV Homework Review the grammar and grasp the differences between the Present Perfect with the Present Perfect Continuous Tense.参考答案【实战演练】1.解析recently常与现在完成时或一般过去时连用。第二空应用一般现在时。答案为A。2.解析现在完成进行时可用于表示动作或状态从过去某一时间开始，一直持续到现在，有可能继续延续下去，也可能刚刚结束。本题使用现在完成进行时强调了动作的持续性和未完成性。答案为D。3.解析.对于强调句型的判断，主要运用还原法对句子进行检验即可，把it be that省略，把被强调的部分还原，如果句子完整，且句意正确，则为强调句型。否则，则是其他的句型，选D。4.【解析】B 根据for three hours和其后的并列分句时态判断，前空为完成进行时，依据so可知已经被取消，后空应为完成被动。5.【解析】C 由“You look tired”