英语四年级下册Recycle 2精品课件ppt

The sixth period（第六课时）

Day 6 Mike and his new friends: Part 2

▶ 教学内容与目标

▶ 教学重点

能够通过看图读懂Bill从小时候到少年的变化的描述，并完成练习。

▶ 教学难点

    能够熟练掌握和运用一般过去时、一般现在时、一般将来时这三种时态。

▶ 教学准备

PPT课件、视频等。

▶ 教学过程

Step 1: Warm-up & Revision & Lead-in

1. Greetings.

2. Sing a song.①

(1)Sing the song—Changes in me. （出示课件） Then present the words.

(2)Present the columns of “Before, Now, In the future”.

Lead students to describe the changes in the boy in the song with these adverbial expressions of time according to the song. Present the main structures of the sentences and the initial letters of the words. Ask students to complete them.

Then lead students to read the sentences together.

◆ Teaching purpose①

通过歌曲复习形容词的比较级、一般现在时和一般过去时，激活本课的相关的语言知识，做好话题准备。将歌词和三个不同时态的时间状语相结合，引导学生在核心句型的提示下，尝试描述小男孩从小到大的变化，以及预测将来的变化，为下面即将进行的学习做铺垫。

3. Lead-in.②

Present the poster of Bill. (课件出示：Bill的海报图片)

T: Bill made a poster to introduce himself to Mike. We can see the changes in Bill from these three pictures. Can you match the pictures of different ages to the columns of “Before, Now, In the future”?

Students match the pictures to the columns.

Before: Age 5

Now: Age 12.

In the future: Age…?

◆ Teaching purpose②

通过Bill的海报导入复习课，让学生将Bill不同的年龄和对应的时间段进行配对，引导学生关注不同的时间状语。

Step 2: Presentation & Practice③

1. Describe Bill at the age of 5.

T: We can see some faces under the pictures. What do these happy or sad faces mean?

Ss: The happy face means “like”. The sad face means “dislike”.

T: What did he like when he was five?

Ss: He liked candies and playing basketball.

(Lead students to learn to express in full sentences.)

T: What didn’t he like?

Ss: He didn’t like skipping rope.

T: How did he look like when he was five?

Ss: He was very short and thin.

T: So, at the age of five, he liked candies and playing basketball, but he didn’t like skipping rope. He was very short and thin.

2. Describe Bill at the age of 12.

T: Now Bill is twelve years old.

Highlight the word “now”.

T: When we describe Bill at the age of 12, do we use “Bill liked…” or “Bill likes…”?

Ss: We use “Bill likes…” and “He doesn’t like…”

T: Excellent! We use different tenses when we describe people or things in different time. So, at the age of 12, he…

Ss: He likes music and storybooks. But he doesn’t like swimming.

Lead students to pay attention to Bill’s differences in height and figure with body language. Present the sentence structures.

Ss: Now Bill is taller and bigger than before. He was much shorter, smaller and thinner before. He likes music and storybooks, but he doesn’t like swimming.

3. Describe Bill’s future.

T: Look at this picture of Bill in the book. Is he becoming older or younger？

Ss: He is becoming older.

T: Yes, he is becoming older. Guess how old he is.

Ss: Maybe he is…years old.

T: I agree with you. I think he is about 20 to 36 years old. What will he look like in the future?

Ss: He will be taller/stronger/…than he is now.

T: What will he like?

Ss: He will like driving a red car and wearing a yellow hat.

Present the sentence structures.

Ss: In the future, he will be much taller and stronger than he is now. He will like driving a red car and wearing a yellow hat.

◆ Teaching purpose③

从before, now, in the future三个不同的时间阶段，引导学生学会使用一般过去时、一般现在时和一般将来时对人物的今昔变化进行描述，并预测将来的变化。给出框架，帮助学生建构句子，在表达的过程中，注意动词的相应变化，提高语言的准确性。

Step 3: Consolidation & Extension

1. Read and tick or cross.④

(1)Students read the following sentences. Judge true or false according to the poster. Then check the answers with the teacher together. (课件出示：Read and tick or cross的答案)

(2)Correct the wrong sentences. The wrong sentences are corrected as followings:

Number 3: Bill will wear a yellow hat to work.

Number 6: Bill will be stronger than he is now.

◆ Teaching purpose④

以判断正误的练习形式，引导学生关注语言表达的细节，加深对不同时态和形容词比较级的理解。

2. Work in groups.⑤

Students describe Bill’s changes in the poster in groups. The teacher presents the main sentence structures on the PPT. Then ask students to act out. If they can make their descriptions more vivid, and with more details, that will be much better.

◆ Teaching purpose⑤

引导学生熟练地运用一般过去时、一般现在时和一般将来时这三种时态以及表示时间的短语描述自己或他人的变化以及预测未来的变化，提高学生的语言综合运用能力。

3. Design your own poster.

T: Use your photos to design your own poster. Try to describe your changes in three periods: before, now and in the future. Then make a report. (出示课件)

▶ 板书设计

▶ 作业设计

1. Write down a brief description of your changes.

2. Do the exercises.

▶ 教学反思

1. 教学设计层层递进，激活学生的储备词汇和旧知，通过核心句型的提炼，帮助学生建构表达。逐步实现教学重难点的突破，有效地达成了课程教学目标。

2. 学生活动设计具体、有层次，创设复习活动对学生的旧知进行复习和巩固，注重对思维的激发和引导，培养学生的自主学习能力。

3. 利用直观生动的图片辅助教学，引导学生观察图片，挖掘图片细节，培养学生的观察能力和逻辑推理能力。

4. 板书设计层次清晰，核心词汇和句型突出，起到了很好的归纳和总结作用。

▶ Teaching Contents & Teaching Aims

Part 2

      Be able to understand the descriptions of Bill’s changes from a little child to a grown-up by pictures, and complete the exercises.

      Be able to use the simple past tense, the simple present tense and the simple future tense as well as relevant adverbial expressions of time to describe the changes in oneself or others and predict the future changes.

▶ Teaching Priorities

      Be able to understand the descriptions of Bill’s changes, and complete the exercises.

▶ Teaching Difficulties

      Be able to have a good command of the simple past tense, the simple present tense and the simple future tense.

▶ Teaching Procedures