Unit 5 Meeting your ancestors 语法学案-高中英语人教新课标选修八.docx

教版Module 8 Unit 5 Meeting your ancestorsGrammar :The present perfect continuous tense(现在完成进行时)学习目标：1、现在完成进行时的定义与构成。2、现在完成进行时的基本句式。3、现在完成进行时的用法。（教学重难点）4、现在完成进行时与现在完成时的区别。（教学重难点） 学习过程：一、目标导入一）、回顾教材：(选修八Unit 5)1.We have been excavating here for many years and.2.We have been finding the bones of tigers and bears in the caves,and.二）、Find the sentences where the present perfect continuous tense is used.1.Sales of washing machines have been increasing this year.2.The poor girl has been collecting seashells to make a living.3.People from Africa have been living in California since the 1800s,when theymoved north from Mexico.二、自主学习：1、（背记）定义：现在完成进行时表示动作从过去某一时间开始，一直持续到现在，可能还要继续下去。2、构成：   主语+                           3、现在完成进行时的基本句式：(以work为例)肯定句： 否定句： 疑问句： 简略回答：（肯）         （否） 三、合作探究-现在完成进行时的用法1、表示从过去某一时间开始一直持续到现在的动作，并且还可能会持续下去，句中常出现时间状语for +一段时间，since，how long, these years, all this time, all the time, all night, all ones life, this week, this month, during the night等。自从上周以来一直在下雨。 It                       since last week. （rain）我累坏了。我一直工作了一下午。                                I am tired out. I                      the whole afternoon. （work） 2、表示动作重复。近年来你一直咳嗽得厉害。You                       a lot lately. （cough）你一直在丢东西。You                        things all the time. （lose） 3、表示关切、惊异、愤怒、赞许等感情色彩。周燕学习一直很刻苦。Zhouyan                          hard. (study)校长一直都很关心我们的学习。The headmaster                        our study. (care) 四、展示评议-现在完成进行时与现在完成时的区别1、现在完成进行时更强调动作的持续性及过程，它是现在完成时的强调形式。试翻译并比较：We have been living here for ten years.We have lived here for ten years.2、在不用时间状语的情况下，现在完成进行时表示动作仍在进行；而现在完成时则表示动作在过去已结束。The students have been preparing for the exam.The students have prepared for the exam.3、现在完成进行时可以表达一定的感情色彩，而现在完成时一般只陈述事实。Recently she has always been helping me.Recently she has helped me a lot. 特殊情况：1、像 sit 、lie、wait、stay、look，用现在完成进行时比现在完成时更合乎习惯。I have been sitting all afternoon.I have been waiting for you since morning.2、像be、have、exist;  like、love、hate;  hear、feel、sound、finish、marry、get up、come、go;  know、believe、think、suppose、doubt不能用于现在完成进行时，但可用于现在完成时。试翻译：我有很长时间没有见到她了。                                       他们已经完成了这项工作。                                      自从1970年起他们就相互认识了。                                  即时练习-语法填空1、Judy: How long                    (be)in Canada?   Lucy: I                     (study)here for more than there years.2、I                   (have) the same car for more than ten years. Im thinking       about buying a new one.3、I                   (love) chocolate since I was a child. You might even call      me a “chocoholic”.4、John                     (work) for the government since he graduated   from Harvard University. Until recently, he                   (enjoy)his   work,but now he is talking about retiring.5、Lately, I                    （think）about changing my career because I                     (become) dissatisfied with the condition at my company.6、I                   (see) Judy for more than five years and during that time I                    (see)many changes in her personality. 五、归纳总结    做题技巧：1、在句中找出有无时间状语2、再根据句意选出时态语态3、通读整句检查人称主谓一致    （2013年高考回顾）The chief engineer together with his colleagues                   new scientific methods of farming since five years ago. (look)五年以来，总工程师和他的同事们一起一直在寻找新的科学农耕方法。 六、检测练习-语法填空Mike: At last! Where             (be)? I                 (wait) for an hour.Helen: Sorry, I             (talk) to an old friend. I                (not see) her for years. And imagine, we met in the middle of the street, just like that.Mike: What            she                   (do) since you last saw her?Helen: She                    (work) as a telephone operator in a hotel but she wants to change her job. She                   (not get on ) well with her boss recently.Mike: Our company is looking for an operator.                    (have) anyinteresting offers yet?Helen: I dont know so. She                       (not look) for a long time.      She just                     (start).Mike: Then tell her about this offer. Shell appreciate it. 本节课小结：1、现在完成进行时：have/has been doing2、现在完成进行时更强调动作的持续性及过程，它是现在完成时的强调形式。3、在不用时间状语的情况下，现在完成进行时表示动作仍在进行；而现在完成时则表示动作在过去已结束。4、现在完成进行时可以表达一定的感情色彩，而现在完成时一般只陈述事实。