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To-infinitive as subjects and predicatives (2)
总 1 课时
课型 新授 主备人
教学 目标 1. Understand the functions of to-infinitives as subjects and predicatives; 2. Use the right forms of to-infinitives to finish tasks of completing a magazine article; 3. Write a thank-you note using to-infinitives.
教学重点 Use to-infinitives as subjects and predicatives correctly and properly.
教学难点 1. Use to-infinitives as subjects and predicatives in new situations. 2. Rewrite a passage using to-infinitives.
教学方法 Comparing, summarizing and practicing.
教学准备 The multimedia and the blackboard.
共性教案 个性教案
Teaching procedures： Step 1 Preparation Review the general rules of to-infinitive as attributives. Check the students’ homework. Step 2 Presentation Activity 1: Discussion Do you know some sentence structures where “it” is used as the preparatory subject Activity 2: Pair work Complete the following sentences 被邀请到你家做客真的是太荣幸了。 在家做饭准备环节需要花很长时间。 然而，烹饪对于我来说还有点挑战性。 Step 3 Progress Exploring the rules concerning to-infinitives as subjects and predicatives. 动词不定式作主语 1.动词不定式具有名词特征，可充当主语。（做主语时谓语动词用单数形式） 2.动词不定式句子的主语时可以用形式主语it代替，将不定式置于句末，平衡句子结构。 3.it 作为形式主语时，常见句型: 4.动词不定式句子的主语时, 若其后面需要用动词作表语时，则作表语的动词也最好使用不定式形式，保持形式一致 (to do is to do) 动词不定式作表语 动词不定式做表语直接用在系动词之后，起解释说明的作用，其主语通常是 : 等表示意向、打算、计划的词。 动词不定式做表语用在seem, appear, remain, prove, turn out等之后 “疑问词+不定式”也可以用作表语 Step 4 Practice 1. T asks Ss to work in groups to finish B2 on page 7. 2. T asks Ss to finish B3 on page 7 of the textbook. 3. T asks Ss to rewrite a thank-you note, using to-infinitives. .Step 5 Summary Summarize the contents in this period and then ask the students to grasp the conclusions.
作业布置 1. Review what the students learned in this period. 2. Finish Exercise 3 on P76 《系统集成》.
板书设计
教学反思

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