外研版九年级上册Module 2 Public holidays时间状语从句教案

外研版九年级英语上册
Module 2 时间状语从句（教学设计）
一、教学目标
1. 学生能够理解并掌握时间状语从句的概念和常见引导词（when, while, as, before, after, until, since等）的用法。
2. 能够正确运用时间状语从句来描述事件的先后顺序和时间关系。
3. 培养学生的逻辑思维能力和语言表达能力。
二、教学重难点
重点：1. 时间状语从句的引导词及其用法。
不同引导词在句子中的时态搭配。
难点：1. when, while和as的区别。
时间状语从句中主从句时态的正确运用。
三、教学方法
讲授法、练习法、对比分析法、情境教学法
四、教学过程
Step 1 Lead-in
1. Show some pictures depicting the sequence of events and ask students to describe them with simple sentences.
2. Guide students to think about how to express the time relationship between events more accurately, thus introducing the concept of adverbial clauses of time.
Step 2 Knowledge Explanation
Introduce common conjunctions of adverbial clauses of time: when, while, as, before, after, until, since, etc.
when: It means "at the time that; whenever". The action in the subordinate clause can occur simultaneously with or before the action in the main clause.
For example: "When I was a child, I often played in the park."
while: It indicates "during the time that; as long as". The action in the subordinate clause is usually continuous and often occurs simultaneously with the action in the main clause.
For instance: "While I was doing my homework, my sister was watching TV."
as: It means "while; when; as soon as". It emphasizes the simultaneity of the actions.
Such as: "As I was leaving the house, the phone rang."
before: It means "earlier than the time when".
Example: "Please come before eight o'clock."
after: It means "later than the time when".
Like: "I'll call you after I finish my work."
until: It means "up to the time when".
For example: "I waited until he came."
7. since: It means "from a particular time in the past until now". The main clause usually uses the present perfect tense.
（1）For instance: "I have lived here since 2010."
（2）Analyze the usage differences among when, while and as through comparative examples.
8. For example:
（1）When I was reading, my mother came in. (The action in the subordinate clause happened before the action in the main clause.)
（2）While I was reading, my mother was cooking. (The actions in both the main and subordinate clauses occurred simultaneously, and the action in the subordinate clause was continuous.)
（3）As I was walking down the street, I saw a friend. (It emphasizes the simultaneity of the two actions.)
9. Explain the tense collocation in adverbial clauses of time:
（1）If the main clause is in the future tense, the subordinate clause uses the present tense to express the future.
（2）If the main clause is in the past continuous tense, the subordinate clause uses the past tense.
（3）If the main clause is in the present perfect tense, the subordinate clause since introduces uses the past tense.
Step 3 Practice and Consolidation
1. Present some sentences and ask students to choose the appropriate conjunction to fill in the blanks.
（1）I was doing my homework ____ my father was watching TV.
（2）____ I got home, it was already dark.
（3）He didn't go to bed ____ he finished his work.
2. Ask students to make sentences using the given conjunctions and verb phrases to describe their daily lives.
（1）when, get up
（2）while, have dinner
（3）since, start school
Step 4 Situational Application
1. Create some situations, such as describing a day's activities or travel experiences, and ask students to express orally using adverbial clauses of time.
For example: "Yesterday, I went to the park. When I arrived, there were many people. I played happily there. After that, I went home."
Group activity: Students have group discussions. Then each group selects a representative to present.
Step 5 Summary
1. Review the conjunctions of adverbial clauses of time and their usages.
2. Emphasize the tense collocation principles in adverbial clauses of time.
Step 6 Homework
1. Write a short passage describing an unforgettable experience of your own, requiring at least three adverbial clauses of time.
2. Complete the related exercises in the textbook.
五、板书设计
Module 2 时间状语从句
引导词：
when 2. while 3. as 4. before
5. after 6. until 7. since
用法区别：when vs. while vs. as
时态搭配：
1.主句一般将来时，从句一般现在时
2.主句过去进行时，从句一般过去时
3.主句现在完成时，since从句一般过去时
六、教学反思
在教学过程中，通过多种教学方法和练习，学生对时间状语从句有了一定的理解和掌握。优点：对比分析when, while和as的用法，帮助学生清晰地理解了它们之间的差异；练习形式多样，包括填空、造句和情境运用，让学生在实践中巩固了所学知识。不足：部分学生对于时间状语从句中主从句时态的搭配仍存在一些混淆；在小组活动中，个别小组的讨论不够深入，有些学生参与度不高；改进措施：针对主从句时态搭配的问题，设计更多有针对性的练习和例句，进行专项强化训练；加强小组活动的组织和引导，明确每个小组成员的任务，鼓励全员参与。