1、Unit 1 FoodmattersGrammar and usageI. Learning objectivesBy the end of the lesson, students will be able to:1. identify the use of to-infinitives as subjects and predicatives;2. use to-infinitives as subjects and predicatives properly in different situations; 3.write a thank-you note using to-infini
2、tives.II. Key competence focusUse to-infinitives as subjects and predicatives correctly and properly. III. Predicted area of difficulty1. Use to-infinitives as subjects and predicatives in different situations.2. write a thank-you note using to-infinitives.IV.Teaching proceduresStep 1 Lead-in T show
3、s Ss some pictures and sentences to arouse their interest. T: Hello, everyone. I would like to show you some pictures and sentences. These delicious food are irresistible to me. And they are always enough to lift my spirits. As a real foodie, I enjoy all kinds of foods. My dream is to try different
4、restaurants and taste various foods. Yesterday I invited some friends to try a great new restaurant for dinner. We arrived at the restaurant, only to see a huge line of people waiting to get into the restaurant. Nothing can stop our determination to have a try. We decided to wait outside. After an h
5、our of waiting, we were invited to go into the restaurant and take the order. The dishes are extremely delicious. It is worthwhile to have such a long wait.T:From these sentences, we could see to-infinitives used as different sentence elements. Today, we will explore the rules concerning to-infiniti
6、ves as subjects and predicatives.【设计意图：学生初中已经接触过不定式，在必修三第二单元又已经学了动词不定式的作定语和状语的用法，所以教师根据本单元的话题，创设语境，编写含有动词不定式用作不同成分的句子，感知不定式的各种用法。让学生感受新情境，复习旧知识，体验新内容。】Step 2 Exploring the rules concerning to-infinitives as subjects and predicatives1. T asks Ss to find out to-infinitives as subjects in the blog entr
7、y.T: Somefoodies prefer to eat out while others would rather eat at home. Below is a blog entry about eating out and eating at home. Find the sentences that use to-infinitives as subjects. The first one has been done for you.Example: To eat out was also a social activity, .2. T asks Ss to compare an
8、d work out the rule according to the above two sentences. When the to-infinitive is used as a subject, we usually use the preparatory subject it at the beginning of the sentence.3. T asks Ss to find out to-infinitives as predicatives in the blog entry.T: Now look at this example. My first thought at
9、 mealtimes was to eat at a restaurant. In this sentence, What element is to-infinitive used as? Can you find other sentences with to-infinitives as predicatives in this blog entry?4. T asks Ss to compare and work out the rule according to the above two sentences. The to-infinitive can also be used a
10、s a predicative. It usually comes after the verb be. 5.T asks Ss to complete the following sentences.被邀请到你家做客真的是太荣幸了。 It is a great honour tobe invited to yourfamily.在家做饭准备环节需要花很长时间。Ittakesa long time to prepare for home-cooked meals.你为我们做了这么多美味的菜真的是太好了。Itisniceofyouto make so many tasty dishes foru
11、s.在当今社会，我们学会做饭还是很有用的。Itisusefulfor us to learn how to cook.然而，烹饪对于我来说还有点挑战性。However, cookingseemstobe challenging for me.是否我能学会做几个菜，以后见分晓。It remains to be seen if I can cook a couple of dishes.6. T guides Ss to summarize the rules of to-infinitives used as subjects and predicatives.【设计意图：通过本环节，学生认知了
12、不定式做主语时往往用it作形式主语。不定式做表语时表示具体动作或者将来的动作。通过设计与本单元话题相关的句子翻译，更好地让学生了解相应的一些句式还有不定式的被动式，为后续的教学环节做好铺垫。】Step 3 Applying the rules1. T asks Ss to finish B1 on page 7 of the textbook.T: The preparation of home-cooked meals is difficult but enjoyable.Rewrite the following sentences using to-infinitives accordi
13、ng to the requirements in the brackets.2. T asks Ss to finish B2 on page 7 of the textbook.T: Do you know what Sky Buffet is? Read the article about Sky Buffet andcomplete the article with correct forms of the verbs in the brackets.3. T asks Ss to write a thank-you note.T: Imagine your friend has ta
14、ken you out to dinner at Sky Buffet. Write a thank-you note to your friend, offering to return the favour by inviting him or her to your home for dinner next weekend. Remember to us to-infinitives. Use the expressions below to help you.【设计意图：在学生认知理解总结不定式作主语和表语之后进行语法训练。从句子训练开始再到篇章训练。学生在统一话题中不断操练，不断熟悉，不断运用。同时也训练了学生的语篇意识。最后要求学生正确使用动词不定式完成一个感谢信的写作任务，学以致用。】Step 4 Presenting T: After you have finished, I will ask some of you to share your writing with us. Nowitsshowtime.【设计意图：让学生展示自己写的感谢信，有利于培养学生的自信心，锻炼学生的胆量。】V. HomeworkPolish your writing after class.
