Unit 6 Nurturing nature Using Language 教案- 高一下学期英语外研版（2019）选择性必修第一册.docx

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1、Unit 6 Nurturing nature Section B Using Language 教学设计科目：英语 课题：Section B Using Language 课时：1课时教学目标与核心素养：引导学生通过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；教学重难点教学重点：引导学生观察例句，发现并总结现在完成进行时的使用规则，完成练习教学难点：提高学生学习语法的兴趣课前准备：多媒体，黑板，粉笔教学过程：一、Pre-class1. Greeting2. Leading-in学生活动：完成活动1。Look at the sentences fro

2、m 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 t

3、he 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 i

4、n your own words.教师引导学生自己去发现现在完成进行时的使用规则，并通过与现在完成时的对比，厘清现在完成进行时的概念。教师仅作为辅助者、监督者，为学生提供支持性信息。第一步：教师可以利用学生学习英语的情况导入语法话题。例如：When did you begin to learn English?How long have you been learning English?第二步：请个别学生朗读第一个句子，关注粗体部分，回答学生用书上的问题1，全班核对答案。第三步：请学生分组，朗读第二个句子，讨论两个句子的区别，回答学生用书上的问题2，全班核对答案。参考答案：1 (1), (3

5、)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 done. 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 pas

6、t.教师活动：总结语法。现在完成进行时1. 现在完成进行时的构成和用法构成：have/has + been +动词的现在分词用法：（1）表示从过去某时开始一直延续到现在并且有可能继续下去的动作。常与延续性动词连用，并常与all the time, this week, this month, all the night, all the morning, recently等状语以及since和for引导的状语连用。The Chinese have been making paper for more than two thousand years.中国人造纸已有两千多年的历史了。（2）表示动作

7、刚刚结束。Sorry！Im late. How long have you been waiting for me？对不起！我来晚了。你等我多长时间了？（3）表示近期内重复发生的动作。We have been discussing the matter several times this year我们今年已经讨论那件事好几了。（4）表示某种感情色彩。I have been telling you not to make trouble.我一直劝你不要捣乱。2. 现在完成时与现在完成进行时的区别（1）现在完成时往往强调动作的完成，现在完成进行时则强调动作的延续。He has written a

8、 letter.他写了一封信。（已经写好）He has been writing a letter.他一直在写一封信。（仍然在写）（2）现在完成时一般不表示动作的重复性，而现在完成进行时可表示动作的重复性。They have met lately.他们近来见过面。They have been meeting lately.他们近来经常见面。（3）现在完成时一般表示平铺直叙，而现在完成进行时有时含有感情色彩。What have you done？你做了什么？What have you been doing？你一直在做什么呀？（4）表示状态、感觉或情感的动词，如see，feel，know，love

9、等，可用于现在完成时，但不可用于现在完成进行时。They have known each other for ten years.他们相识已经十年了。（不说They have been knowing.）二、 While-class 学生活动：完成活动2。Complete the passage with the correct form of the verbs in brackets.I _ (hear) a strange sound for a while. Its a deep, loud roar, like a lions. But there arent any lions h

10、ere. 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! Its a giant spider! I brush it off and it runs under some leaves. I try to bat away the huge insects, which 4 _ (

11、fly) around my head in a black cloud for quite a while.I pull off the headset and Im 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

12、 species there are in the rain forest. We must do all we can to protect it.教师引导学生通过在真实语境中运用本单元所学语法，巩固强化所学语法。第一步：学生独立阅读语段，掌握大意，并根据所学知识用动词的适当形式填空。第二步：教师请个别学生朗读完整语段，全班核对答案。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学生活动：完成活动3。Look at the

13、 charts and make sentences using the present perfect continuous tense.教师引导学生创造性地使用所学语法，通过这一活动唤起学生保护环境的意识，号召学生参与保护环境的活动。第一步：学生两人一组，讨论本地区近几年的环境变化，讨论时尽量使用现在完成进行时。第二步：请小组代表分享讨论成果。教师注意学生是否正确使用了所学时态。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

14、 last 20years.3 Butterfly population has been increasing / has been becoming larger and larger in the last 20years.三、After-classWork in pairs. Talk about how the environment where you live has changed. Use the present perfect continuous tense where appropriate.教师引导学生创造性地使用所学语法，通过这一活动唤起学生保护环境的意识，号召学生参与保护环境的活动。第一步：学生两人一组，讨论本地区近几年的环境变化，讨论时尽量使用现在完成进行时。第二步：请小组代表分享讨论成果。教师注意学生是否正确使用了所学时态。四、 Summary 老师根据课堂内容，总结课上的语法。五、 作业布置完成本节课的同步练习。