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1、Unit 2 Natural disastersGrammar and usage教学设计I. Learning objectivesBy the end of the lesson, students will be able to:1. understand the functions of to-infinitives as attributives and adverbials of result;2. use to-infinitives as attributives and adverbials of result properly in different situations
2、; 3. rewrite a passage using to-infinitives. II. Key competence focusUse to-infinitives as attributives and adverbials of result correctly and properly. III. Predicted area of difficulty1. Use to-infinitives as attributives and adverbials of result in new situations.2. Rewrite a passage using to-inf
3、initives.IV. Teaching proceduresStep 1 Lead-in T: Hello, everyone. Last period we read two news reports about the lucky escapes from two natural disasters. First, Id like to show your some sentences in these two news reports. Alice Brown, head teacher at Falmont Primary School, was teaching when the
4、 floor began to shake. The moment the shaking stopped, Miss Brown sensed it was the best time for the class to make their escape. She signalled to her students to exit the classroom in an orderly line covering their heads with their hands. The kids were calm enough to protect themselves during the e
5、arthquake. “We practise earthquake safety procedures twice a year,” said Miss Brown, “so the kids were calm enough to protect themselves during the earthquake.”T: In all these sentences, therere to-infinitives used as different sentence elements. In todays class, we will explore the rules concerning
6、 to-infinitives as attributives and adverbials of result and learn to use them in different situations.【设计意图：学生在初中阶段已经接触过动词不定式的一部分用法，所以先在学生相对熟悉的语境中呈现含有动词不定式的句子，然后再呈现新的语法知识动词不定式作定语和结果状语，用这个方法帮助学生建立新旧知识之间的联系，从而顺利过渡到新知识的学习。】Step 2 Exploring the rule concerning to-infinitives as attributives1. T asks Ss
7、 to find out to-infinitives as attributives in the interview.T: Below is an interview between Anna and her teacher, Mr Li, about his experiences during a hurricane. Find the sentences with to-infinitives as attributives. The first one has been done for you.Example: I was staying in Atlanta, and that
8、 was one of the cities to be hit. T: To be hit is a to-infinitive as an attributive used to modify one of the cities.T: Please find out all the sentences with to-infinitives as attributives in the interview. 2. T asks Ss to work out the rule according to the above sentences. When the to-infinitive i
9、s used as an attributive, it is often put after the noun or pronoun it modifies.3. T asks Ss to think about the logical relationship between the to-infinitive as an attributive and the noun or pronoun it modifies.Example: He is the best man to choose.T: We can understand the sentence in two ways. Fi
10、rst, the sentence can be interpreted as “He is the best man to make the choice.” The relationship between the best man and to choose is that of subject and verb. Second, “He is the best man that we can choose.” The relationship between the best man and to choose is that of verb and object.4. T asks
11、Ss to read the following the sentences and work out the logical relationship between the to-infinitive as an attributive and the noun or pronoun it modifies. A person needs just three things to be truly happy in the worldsomeone to love, something to do and something to hope for. (verbobject) Wise m
12、en speak because they have something to say; fools because they have to say something. (verbobject) Clint was the second person to survive in the earthquake. (subjectverb) The need to love and to be loved is universal. (apposition) In order to grow, people need to have a willingness to take risks an
13、d to accept the possibility that they may fail at first. (apposition)5. T summarizes the logical relationship between the to-infinitive as an attributive and the noun or pronoun it modifies.6. T asks Ss to rewrite the following sentences, using to-infinitives as attributives. No other local beaches
14、survived the disaster without any loss of life besides Goldshore Beach. Goldshore Beach is the only local beach to survive the disaster without any loss of life. Why dont you get a backpack? You can carry your disaster supplies in it. Why dont you get a backpack to carry your disaster supplies in? S
15、he expressed her wish. She wanted to go back after the flood struck her hometown. She expressed her wish to go back after the flood struck her hometown.【设计意图：让学生认识到动词不定式作定语在句中的位置，并体会动词不定式作定语时与所修饰的名词或代词之间的逻辑关系，然后设计句子改写的练习，通过实践活动让学生了解如何在句子中使用动词不定式作定语，从而对动词不定式作定语有更深刻的理解，为最后在语篇中使用动词不定式打下基础。】Step 3 Explo
16、ring the rule concerning to-infinitives as adverbials of result1. T asks Ss to read the interview again and find out to-infinitives as adverbials of result.Example: That morning, I turned on the TV for some local news, only to hear that a hurricane was on its way. T: Only to hear is a to-infinitive as an adverbial of result.T: Please find out all
