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新人教八下英语Unit1 Time to relax Section A Grammar focus教案
I. Teaching Objectives
1. Language Knowledge
Students will master the form and function of the Infinitive (to do).
Affirmative (to do), Negative (not to do), and Bare Infinitive (omitting to after specific verbs like let, make, see).
Identify and use infinitives as:
Adverbial of Purpose: (e.g., I play the flute to relax.)
Object: (e.g., I decided to give it a go.)
Object Complement: (e.g., She told me not to give up. / Let him play.)
Subject: (e.g., To solve the case is my dream. / It is important to trust.)
Attribute (Post-positive): (e.g., a dream to become...)
Predicative: (e.g., My goal is to protect...)
Vocabulary: Reinforce words related to hobbies and emotions in context: flute, instructor, push, myself, chat, outing.
2. Language Skills
Students will be able to analyze sentence structures to determine the specific grammatical function of an infinitive in a given context.
Students will accurately complete dialogues and passages using the correct infinitive forms (with or without to, affirmative or negative).
Students will use infinitives to describe their own free-time activities, reasons for doing them, and advice given/received.
3. Cultural Awareness
Students will explore diverse ways teenagers spend their free time (sports, arts, online socializing).
Students will understand the importance of balancing personal hobbies with family time (e.g., "family outing").
II. Key Points and Difficulties
1. Key Points (Teaching Focus)
Function Identification: Distinguishing between infinitives used as Adverbials of Purpose (answering "Why ") and Object Complements (completing the meaning of the verb + object).
Verb Patterns: Memorizing verbs that take the infinitive as an object (want, decide, hope, plan) vs. verbs that take an object complement (tell, ask, encourage vs. let, make, see).
Negative Form: Correctly forming the negative infinitive: not to do (placing not before to).
2. Difficult Points (Teaching Challenges)
Bare Infinitive Rule: Remembering to omit to after causative verbs (let, make) and sensory verbs (see, watch, hear) when used as object complements.
Challenge: Differentiating between ask sb. to do and let sb. do.
Logical Subject-Verb Agreement: Understanding that when an infinitive acts as the subject, the main verb is singular (e.g., To play sports is fun).
Contextual Usage: Choosing the correct form in complex sentences where multiple functions might appear (e.g., distinguishing attribute vs. predicative).
III. Teaching Procedures
Step 1: Lead-in & Review (5 minutes)
Song/Movie Clip: Play a short clip from Zootopia or a song containing infinitives (e.g., "Try Everything").
Lyrics focus: "I won't give up, no I won't give in..." / "It's easy to say..."
Quick Quiz: Show sentences from the previous lesson (Unit 1 Section A) on the screen.
Example: "I went to the sports centre to ice skate."
Question: "Why did she go " -> "To ice skate." -> Introduce the term Infinitive of Purpose.
Purpose: To activate prior knowledge and naturally transition into the grammar focus.
Step 2: Presentation & Discovery (15 minutes)
Observation (Grammar Focus Box):
Display the four key sentences from the textbook (PPT Slide):
I play the flute to relax. (Adverbial)
I decided to give it a go. (Object)
She told me not to give up. (Object Complement)
I saw my mother paint. (Object Complement - Bare)
Task: Ask students to underline the infinitive structures and guess their functions based on the Chinese translations provided in the PPT.
Rule Induction (Interactive Board):
Create a mind map on the board with student input:
Form: to + verb / not to + verb.
Functions:
成分 例子
Object After verbs like want, decide, hope.
Object Complement ask/tell sb. to do VS let/make/see sb. do.
Subject To do... is... / It is... to do....
Attribute a dream to become...
Predicative My goal is to...
Special Attention "Bare Infinitive" rule (Let/Make/See)
Step 3: Practice & Consolidation (15 minutes)
Mechanical Practice (4b - Complete the Conversations):
Students work in pairs to fill in the blanks in the dialogue exercises.
Focus: Check for decide to try, try to forget, asks me to fly, watch you (fly) [bare], told me not to push.
Feedback: Invite pairs to read aloud; correct pronunciation and intonation, especially in negative forms (not to push).
Contextual Practice (4c - Complete the Passage):
Provide the text about the twin brothers.
Task: Fill in the blanks with the correct infinitive forms from the box (not come, do, listen, play, spend, stay, watch, chat).
Key Analysis:
meet friends to play football (Purpose/Attribute context).
decided not to come (Negative Object).
likes to stay / to watch / to listen / to chat (Object after 'like').
wanted us to spend (Object Complement).
let us do (Bare Infinitive after 'let').
Multiple Choice Drill:
Quick fire questions based on the PPT exercises (e.g., Let him ___ basketball -> play).
Step 4: Production & Expansion (8 minutes)
Activity: "My Hobby Profile"
Prompt: Write 3-4 sentences about your favorite hobby using at least three different functions of the infinitive.
Structure Guide:
Purpose: I do [hobby] to relax/to learn...
Object: I plan to practice... / I hope to improve...
Advice/Complement: My parents tell me not to spend too much time... / They let me choose...
Sharing: Select 2-3 students to share their profiles. Class identifies the functions used.
Moral Education: Conclude with the quote from the PPT: "Every 'to do' action is striving for what you love. Never give up easily." Discuss how hobbies make us better.
Step 5: Summary & Homework (2 minutes)
Summary: Recap the 6 functions of the infinitive and the "Bare Infinitive" exceptions.
Homework:
Must do: Write 5 sentences using "verb + to do" structures to describe your weekend plans.
Choose to do: Interview a family member about their hobbies. Record at least 2 sentences using infinitives (e.g., My dad likes to fish to relax.).
IV. Teaching Reflection (教学反思)
1. 教学目标达成情况：本节课紧扣“动词不定式”这一核心语法点，通过从课文句子观察、规则归纳到分层练习的流程，基本达成了预设目标。绝大多数学生能够准确识别不定式在句中作目的状语、宾语及宾语补足语的用法。特别是在区分 tell sb. to do 和 let sb. do 这一难点上，通过对比练习和口诀记忆（“一感二听三让四看”），学生的正确率较高。情感目标方面，通过讨论爱好与坚持的话题，课堂氛围积极向上。
2. 教学亮点：
情境化语法教学： 避免了枯燥的规则罗列，利用《疯狂动物城》的角色（朱迪、尼克）和生活化的双胞胎兄弟故事作为语境，让语法点在 meaningful context 中呈现，降低了学生的认知负荷。
思维导图归纳法： 引导学生自己从例句中提炼出不定式的六种功能并绘制成思维导图，变“被动接受”为“主动构建”，加深了对语法体系的理解。
讲练结合紧密： 每个知识点讲解后紧跟针对性的填空或选择题（如 4b, 4c 及单选练习），及时巩固，反馈即时。
3. 存在不足与改进措施：
深层逻辑辨析不够： 部分学生在区分“不定式作后置定语”和“不定式作目的状语”时仍显模糊（例如：I have a lot of homework to do vs. I came here to do homework）。
改进： 下次课可增加专门的对比辨析环节，通过提问法（“是修饰名词还是修饰动词？”）强化逻辑判断。
口语产出深度有限： 在 "My Hobby Profile" 环节，部分基础薄弱的学生仅能套用简单句型，未能灵活运用作主语或表语的高级结构。
改进： 提供不同层级的句型模板（Scaffolding），为基础弱的学生提供半开放式句子，鼓励基础好的学生尝试使用 It is... to... 或 My dream is to... 结构。
时间分配前松后紧： 在规则归纳环节花费时间稍多，导致最后的学生展示环节略显仓促，只有少数学生有机会分享。
改进： 严格控制讲授时间，将部分简单的规则发现任务前置为预习作业，课堂重点放在易错点的辨析和综合运用上。
总体而言，本课通过丰富的语境和层层递进的活动，使抽象的语法知识变得具体可感。未来需进一步关注学生的个体差异，优化时间管理，提升课堂互动的广度与深度。

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