1、1 英语英语 （选择性必修（选择性必修第一册）第一册） Unit 1 Food matters Grammar and usage I. Learning objectives By 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. wri
2、te a thank-you note using to-infinitives. II. Key competence focus Use to-infinitives as subjects and predicatives correctly and properly. III. Predicted area of difficulty 1. Use to-infinitives as subjects and predicatives in different situations. 2. write a thank-you note using to-infinitives. IV.
3、 Teaching procedures Step 1 Lead-in T shows 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 kind
4、s of foods. My dream is to try different 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 tr
5、y. We decided to wait outside. After an hour 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 wi
6、ll explore the rules concerning to-infinitives 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 predicatives 1. T asks Ss to f
7、ind out to-infinitives as subjects in the blog entry. T: Some foodies 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 w
8、as also a social activity,. 2 2. T asks Ss to compare and 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 bl
9、og entry. T: Now look at this example. My first thought at 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 th
10、e above two sentences. The to-infinitive can also be used as 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 to be invited to your family. 在家做饭准备环节需要花很长时间。 It takes a long time to prepare for home-cooked meals
11、. 你为我们做了这么多美味的菜真的是太好了。 It is nice of you to make so many tasty dishes for us. 在当今社会，我们学会做饭还是很有用的。 It is useful for us to learn how to cook. 然而，烹饪对于我来说还有点挑战性。 However, cooking seems to be 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 s
12、ummarize the rules of to-infinitives used as subjects and predicatives. 【设计意图：通过本环节，学生认知了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 rules 1. T asks Ss to finish B1 on page 7 of the textbook. T: The preparation of home-c
13、ooked meals is difficult but enjoyable. Rewrite the following sentences using to-infinitives according 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 and complete the article with correct
14、forms of the verbs in the brackets. 3. T asks Ss to write a thank-you note. T: Imagine your friend has taken 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-infinitive
15、s. 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. Now its show 3 time. 【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. Homework Polish your writing after class.
