Unit4Grammarandusage教案 牛津译林版（2020）高中英语选择性必修第一册.docx

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1、To-infinitive as subjects and predicatives (2) 总 1 课时课型新授主备人朱突春教学目标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-infinitiv

2、es 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 Preparation1.

3、Review the general rules of to-infinitive as attributives.2. Check the students homework.Step 2 PresentationActivity 1: DiscussionDo you know some sentence structures where “it” is used as the preparatory subject?Activity 2: Pair workComplete 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。

4、 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.u 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)u 动词不定式作表语1. 动词不定

5、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。2. 动词不定式做表语用在seem, appear, remain, prove, turn out等之后3. “疑问词+不定式”也可以用作表语Step 4 Practice1. 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 SummarySummarize 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