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1、Unit 2 Natural disastersGrammar and usage (II)7b-infinitives as attributives and adverbials of result内容分析：本板块围绕单元话题，引导学生在关于“经历飓风”的采访中观察、识别、 探究动词不定式做定语和结果状语的用法；在此基础上，让学生自主归纳出该语 法项目的核心规则；随后通过句子和语篇两个层面的练习，巩固动词不定式做定 语和结果状语的用法；最后要求学生使用动词不定式完成一段对话。教学目标：By the end of this section, students will be able to:
2、1. identify and categorize the use of to-infinitives as attributives and adverbials of result;summarize general rules of /-infinitives as attributives and adverbials of result;2. apply the rules and to use to-infinitives to complete or make sentences.教学重难点：1. To summarize the general rules;To apply
3、the rules correctly and properly.教学过程：Step 1 Homework checkinga. object b. object complementc. attributive d. adverbial of purpose e. adverbial of resultIm sorry that I cannot come to your birthday party tomorrow as I have an important meeting to attend.1. She hurried to the cinema, only to find all
4、 the tickets had been sold out.1.1 ask you to complete the task on your own.4. To reach the summit, we need a local guide.5. We must learn to walk before we can run.6. Tm afraid they will have a difficult decision to make.7. To avoid losing a good friend, you need to apologize as soon as possible.8.
5、 He left his hometown, never to be heard from again.9. We agreed to change our plan at the meeting.10. She invited me to watch a film.Possible answers:1. c2. e 3. b4. d5. a6. c7. d; a 8. e9. a10. b81. Match the first half of the sentences below with the correct to-infinitives.Possible answers:1 e 2c
6、 3d 4b 5aComplete the diary entry below using /-infinitives.(1) to find books about hurricanes(2) to find he was not in the office(3) to attend(4) to make PPT slides for my projectWork in pairs and complete the conversation using to-infinitives.(1) was actually the first to leave(2) to keep us warm(
7、3) wanted to return home as soon as possible(4) to find it completely destroyed(5) advised us to take an active part in the rebuilding【设计意图：通过检查家作，来检验学生对不定式的掌握程度。】Step 2 ConclusionAll functions of to-infinitivesSubjects1) To see is to believe.2) To improve your oral English is your present task.1. O
8、bjects1) They agreed to hand in improved model tomorrow.2) The charity hopes to help all the people in need.2. Attributives1) We have made environmental policies for business to observe.2) Ordinary people have a lot of things to cope with every day.3. Object complements1) The government encourages u
9、s to protect the environment.2) Everybody was asked to perfect his or her writing skills.4. Predicative1) My job today is to take care of my little sister.2) Their method seemed to be more practical.5. Adverbials of purpose1) Then as a class, out all the parts together to make a booklet.2) Some peop
10、le hunt animals for fashion: animal skin is used to make coats and bags.6. Adverbials of result1) I ran all the way to school, only to be told that it was Sunday.2) They tried their best to rescue the missing people, only to find their dead bodies.7. Adverbials of reason1) I was delighted to know the result of the interview.2) The students were excited to know that they would have two days off.【设计意图：通过总结动词不定式的各种用法帮助学生形成语法体系，加深对不 定式用法的理解。】Step 3 HomeworkFinish the extra exercise.【设计意图：强化知识运用。】教学反思