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1、Unit 4 Space Exploration子主题2：关注太空探索历史及成就Period 3 Discovering Useful Structures一、教学内容分析本课时为子主题2的第三课时，课时的核心语法是动词不定式作定语和状语。学生在初中阶段已经学习过不定式用作目的状语，本单元增加了不定式作结果状语的用法。当不定式用作定语时，一般置于被修饰词之后作后置定语，可用来修饰名词、代词、数词等。当不定式用作状语时，可表示目的、结果、原因以及伴随状况等。本课时和单元主题相结合，引导学生学习并运用动词不定式作定语和状语的结构描述已知的太空事实、太空探索历史上的重大事件和重要人物的成就。二、学情
2、分析学生在初中阶段已经学习了动词不定式作宾语、宾语补足语和目的状语的用法，对动词不定式这一结构比较熟悉。同时，通过本单元前几课时的学习，学生对人类探索太空的发展历程以及中国在太空探索领域所取得的成就有了较深入的了解，并且有一定的语言积累，为本节课的语法学习奠定了基础。三、教学目标通过本课时学习，学生能够：1. 发现并总结不定式作状语和定语的语法功能；2. 运用不定式作状语和定语，描述太空事实、太空探索史上的重大事件和重要人物的成就。四、教学重难点【重点】发现并总结不定式作状语和定语的语法功能；【难点】运用不定式作状语和定语，描述太空事实、太空探索史上的重大事件和重要人物的成就。五、教学活动设计
3、环节一：激活已知，引入语法现象。（5 mins）教师引导学生看图回答问题，引出语法现象动词不定式，并小组内探讨已学过的动词不定式的语法功能有哪些，尝试举例说明。教学活动1. Ss revise what they have learnt last period and answer the question.What do you know about Yuri Gagarin?2. Ss think and discuss in groups about the functions of infinitive.What are the functions of infinitive in a
4、 sentence?Can you give some examples to show its functions?活动层次学习理解之感知与注意效果评价通过提问及观察学生的讨论，了解其对于不定式语法功能的了解情况。环节设计意图：引导学生关注动词不定式的语法现象。环节二：总结归纳不定式作定语和作状语的具体用法（20 mins）教师引导学生观察5个句子，分析动词不定式作定语和状语的用法，然后从教材第40-41页的阅读语篇中找出更多相似用法的句子，并将其进行分类，然后总结不定式作状语和定语的具体用法。教学活动3. Ss read five sentences, focus on the itali
5、cized infinitives and identify their functions by changing the infinitive parts into clauses.4. Ss go over the passage on page 40-41 and find more examples with the infinitives used as the attribute and the adverbial.5. Ss analyse and summarise how to use the infinitives as the attribute and the adv
6、erbial by completing the table.活动层次学习理解之获取与梳理,概括与整合效果评价通过倾听学生的回答，了解他们对不定式作定语和作状语用法的理解情况。环节设计意图：引导学生在语境中分析、理解不定式作状语和定语的功能和用法。环节三：巩固练习，内化语法（10 mins）教师引导学生完成教材第42页活动2，尝试使用动词不定式改写句子，进一步理解动词不定式的语法功能及意义，并引导学生总结to do, doing, done三种非谓语动词形式作定语和作状语在意义和用法上的区别。教学活动6. Ss rewrite the sentences using infinitives o
7、r “in order to/so as to do”. Change the italicised parts accordingly.7. Ss complete the passage with the correct forms of the verbs in brackets (activity 3 on page 42).8. Ss think about the differences among -ing, -ed and to do when they are used as attribute and adverbial.活动层次应用实践之内化与运用；分析与判断效果评价通过
8、观察作答情况以及倾听他们的答案，了解他们对不定式作状语和定语的掌握情况，及对三种非谓语动词的掌握情况。环节设计意图：引导学生在练习中加深对动词不定式作定语和目的状语的理解和运用，帮助学生内化语言结构，并在巩固动词不定式这一核心语法知识的同时，复习其他非谓语动词形式。环节四：迁移创新，内化输出（5 mins）教师引导学生结对，结合本节课语法现象动词不定式，介绍与太空探索相关的人或事件。教学活动9. Ss work in pairs to make a short introduction about space exploration with infinitives. 活动层次迁移创新之想象与
9、创造效果评价通过观察和倾听，了解学生对动词不定式的实际运用情况。环节设计意图:通过口语输出的方式，帮助学生综合运用动词不定式描述太空探索。作业与拓展学习设计Read the passage on page 44 and find sentences with the infinitives used as the attribute and the adverbial.WorksheetUnit 4 Discovering Useful StructuresActivity 1: Revise and answerWhat do you know about Yuri Gagarin?Acti
10、vity 2: Think and discuss in groups(1) What are the functions of infinitives in a sentence?(2) Can you give some examples to show its functions?Activity 3: Recognise and analyseLook at five sentences. Focus on the italicized infinitives and identify their functions by changing the part with infiniti
11、ve into a clause.Activity 4: Skim and findSkim the part of Reading and Thinking and find out more infinitives as the adverbial or the attribute.Activity 5: Observe, analyse and summarisePart 1: Find out the infinitives logic subject, analyse the relationship between the infinitive and its logic subj
12、ect and talk about what kind of adverbial it is.Part 2: Fill in the table according to what you have analysed.Part 3: Find out the infinitives logic subject and analyse the feature of its logic subject.Part 4: Fill in the table according to what you have analysed.Activity 6: Rewrite and changeRewrit
13、e the sentences using infinitives or “in order to/so as to do. Change the italicized parts accordingly.Activity 7: Read and completeComplete the passage with the correct forms of the verbs in brackets.Activity 8: Think and discussThink about the differences among -ing, -ed, and to do when using as a
14、ttribute and adverbial.Work in pairs and introduce a person or an event about space exploration with infinitives. You can refer to the information in the text.Activity 9: Make an introductionAfter orbiting Earth for long, the three crew members departed from the Tiangong space station and returned t
15、o the mother planet. Please work in pairs to make a short introduction about them. Dont forget to use infinitives in your introduction.Evaluation FormItemsPeer-evaluationTeacher-evaluationIntroduction about people or events about space exploration Use of infinitives Language accuracy Language richness Fluency Pronunciation Logic and coherence HomeworkRead the passage on page 44 and fin
