Unit 6 Nurturing nature Section B Using Language（教案）-高中英语外研版（2019）选择性必修第一册.docx

Unit 6 Nurturing natureSection B Using Language教学设计科目：英语 课题：Section B Using Language课时：1课口寸教学目标与核心素养：知识目标：学生观察例句归纳现在完成进行时的概念及用法，理解这种时态的功能，并能够 在真实语境中进行应用能力目标：学生可以熟练运用语法点完成同步练习情感目标：学生通过本节内容的学习更好的理解开展经济与保护自然的关系教学重难点教学重点：学生掌握本节的语法并且完成各项练习教学难点：学生将现在完成进行时与其他的易混语法进行区分课前准备：多媒体，黑板，粉笔教学过程： 一、Pre-class1. GreetingLeading-in学生活动：完成活动1。第一步：教师针对课文中出现的现在完成进行时的句子进行提问，导入语法话题。第二步：学生分组，关注本活动中两个句子中的粗体局部，然后小组内讨论问题1、2的答 案。第三步：小组讨论、总结现在完成时和现在完成进行时的用法及区别。第四步：请各小组代表提供答案，其他小组进行补充，教师进行归纳总结。Look at the sentences from the reading passage and answer the questions.a Wild animals such as these Tibetan antelopes have now been using these passages for years.b . before I know it, we have reached Tanggula Station.1 Which of these statements are true about sentence (a)?(1) Wild animals started using these passages in the past.(2) Wild animals used these passages only once.(3) Wild animals still use these passages now.2 What is the difference between the expressions in bold in sentences (a) and (b)?Now look for more sentences with the present perfect continuous tense in the reading passage, and summarise its use in your own words.参考答案：KD, (3)2 They are different in form and meaning. For sentence (a) the form is "have been doing”, while for sentence (b) the form is "have done1'. In meaning, the bold part in sentence (a) means the action is continuous from the past; while the bold part in sentence (b) means the action happened once in the past.二、While-class教师活动：总结语法1现在完成进行时的概念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，这 个动作可能刚终止，也可能还在进行。2现在完成时和现在完成进行时的区别1)在不用时间状语的情况下，现在完成进行时的动作不一定已经完成，很可能持续下去， 而现在完成时一般表示动作已经完成。即现在完成进行时强调动作的延续性，而现在完成时 强调动作的结果。例如：a. Fve been designing solar racing cars.(我一直在设计太阳能赛车。) b.Pve designed five or six different cars.(我已经设计五六辆小汽车了。)2)现在完成进行时往往表示动作在重复，而现在完成时一般不表示动作的重复。例如：a.I've been taking part in races for four years.(我这四年一直在参加比赛。)b.How many races have you taken part in?(你参加多少场比赛了？)3)现在完成进行时与所有进行时态一样带有感情色彩，可使表达显得生动，而现在完成时 往往只说明一个事实、一种影响或结果，不带感情色彩。例如：What have you been doing? You look fed up.(你一直在干什么呀？你看上去很不高兴。)3常与现在完成进行时连用的时间状语现在完成进行时常与表示一段时间的状语连用，例 如:all the time, this week, all night, these few days, for*, since等。例如：a. A private detective has been tailing him for several weeks.(一位私人侦探几个星期以来 一直在跟踪他。)b. Craig loves outdoor activities - he skis in winter and has been fishing and hunting since hewas a child. (Craig热爱户外活动，冬天他去滑雪，他从小就开始钓鱼和打猎。)学生活动： 完成活动2。Complete the passage with the coiTect form of the verbs in brackets.I(hear) a strange sound for a while. It's a deep, loud roar, like a lion's. But there aren't any lions here. Or are there? Soon I see what 2(make) the noise: a howler monkey. Now I feel less worried. Realising that something 3 (move) on my shoulder, I turn my head to look at it. Oh no! It's a giant spider! I brush it off and it runs under some leaves. I try to bat away the huge insects, which 4 (fly) around my head in a black cloud for quite a while.I pull off the headset and I'm back in my living room. Thank goodness! I 5 (give) the latest virtual reality headset and, for the last twenty minutes,I 6(use) it to explore the Amazon. This is an amazing experience and a reminder of how many species there are in the rain forest. We must do all we can to protect it. 参考答案：1 have been hearing 2 has been making 3 is moving 4 have been flying 5 have been given 6 have been using三、After-class学生活动：完成活动3。Look at the charts and make sentences using the present perfect continuous tense.Desert areasNow10 years agoButterfly population |20 years ago参考答案1 The number of trees has been increasing in the last 20 years.2 Desert areas have been reducing in the last 20years.3 Butterfly population has been increasing / has been becoming larger and larger in the last 20years.四、 Summary老师根据课堂内容，总结课上的语法。五、 作业布置 完本钱节课的同步练习。