1、第 1 页 共 4 页 Book 3 Unit 2 Natural disasters Grammar and usage To-infinitives as attributives and adverbials of result 一、一、教学目标教学目标 By the end of this session, students will be able to: 1. identify and categorize the use of to-infinitives as attributives and adverbials of result; 2. summarize general
2、 rules of to-infinitives as attributives and adverbials of result; 3. apply the rules and use to-infinitives to complete or make sentences. 二、二、教学重难点教学重难点 1. To analyze the functions of to-infinitives in sentences; 2. To write sentences with to-infinitives. 三、三、教学过程教学过程 步步 骤骤 教学活动教学活动 设计意图设计意图 互动时间互
3、动时间/ /模式模式 Lead-in Step 1 Have a free talk with students, preparing them for reading the passage. 1. What kind of natural disasters are connected with a strong storm? Typhoon, hurricane, tornado 2. What should people do during a strong storm? Stay inside, close and lock all the windows and doors. Li
4、sten to the radio to keep informed of what is going on. 由单元话题导入 本课语法项目， 活跃课 堂气氛， 在呈现目标语 法知识之前提供引导 性的语料。 3 Individual Work Class Work Exploring the rules 第 2 页 共 4 页 Step 2 Guide students to analyze the functions of to-infinitives through a short paragraph using the information from the free talk. Du
5、ring a strong storm, we should stay at home and listen to the radio to keep informed of what is going on. Besides a radio, we can have a computer or a smart phone to update the information. However, you can find so much information to read online. Part of it is true. Part of it is false. Sometimes,
6、you collect all the information, only to make yourself confused. 让学生在真实的 语境中观察、 分析、 充 分感知动词不定式在 不同的句子中的成分， 为归纳语法规则做好 铺垫。 4 Individual Work Class Work Step 3 Have students focus on to-infinitives and identify the different functions by filling the table in A. Then help them work out the rules. The te
7、acher can guide students to go through the grammar notes on Pages 9899 to help them understand the rules thoroughly. 教师通过更多例 句来启发、 引导、 点化 学生体会语言的规律 性， 发展分析性思维能 力， 最终习得目标语法 结构。 13 Class Work Applying the rules Step 4 Have students finish B1 and B2 on Page 21. The teacher can explain the functions and
8、 lead students to conclude that to-infinitives can function as almost all the parts of a sentence except predicate. B1 Sample answer (1) e (2) c (3) d (4) b (5) a B2 Sample answer (1) to find books about hurricanes (2) to find he was not in the office (3) to attend 创设语境， 让学生 在使用的过程中逐步 建立起语法系统， 体会 语言
9、的工具性。 8 Individual Work Class work 第 3 页 共 4 页 (4) to make PPT slides for my project Step 5 Have students finish B3 on Page 21 in pairs and exchange their ideas with peers. Sample answer (1) was actually the first to leave (2) to keep us warm (3) wanted to return home as soon as possible (4) to find
10、 it completely destroyed (5) advised us to take an active part in the rebuilding 有意义的操练活 动能够吸引学生的注 意力， 同时关注到包括 形式、 意义和用法上的 学习难点。 5 Pair Work Step 6 Help students analyze other functions of to-infinitives. Subject: To keep smiling is healthy for you. Its important to learn English well. Object: We al
11、l hope to learn English well. Object complement: Our English teacher wishes us to learn English well. I saw him cross the street. Predicative: My job is to help you (to) learn English well. Other special functions: I am glad to help you with your English. Many students ask how to learn English well.
12、 拓展单元语法， 总 结归纳不定式的常见 用法。 5 Group Work Class Work Consolidation Step 7 Exercises 根据学生的知识5 第 4 页 共 4 页 1. 少吃点油炸食品是个好主意。 It is a good idea to eat less fried food. 2. 你需要在安静的地方学习。 You need to study at a quiet place. 3. 我告诉他不要放弃。 I told him not to give up. 4. 你能给我一些可以写字的纸吗？ Can you give me some paper to
13、write on? 5. 我大声朗读来锻炼我的发音。 I read loudly to practice my pronunciation. 6. 我跑到车站，却被告知火车已经离开了。 I ran to the station, only to be told that the train had already left. 基础与学习需要， 有针 对性地进行课堂巩固， 使学生内化语法规则， 强化句法意识。 Individual Work Class Work Homework 1. Find out the sentences with to-infinitive on Pages 1617 and understand the functions. 2. Finish the workbook. 2
