九年级英语上学期Unit 4教案
Topic 3
Section A
The main activities are 1a and 2a. 本课重点活动是1a和2a。
Ⅰ. Teaching aims and demands 教学目标
1. Master the new word:
research
2. Help the students to learn the usage of modal verb+passive voice.
3. Talk about flying to Mars and the outer space and something about the aliens.
4. Help students to learn expressing possibility and impossibility.
Ⅱ. Teaching aids 教具
录音机/一个破损的MP3（或别的其他东西。）
Ⅲ. Five-finger Teaching Plan 五指教学方案

Step 1 Review 第一步 复习（时间：10分钟）

（复习一般过去时的被动语态。）
T: Good morning, boys and girls! (突然面色由晴转阴。)
What happened to my MP3? (可替换为其他的物品。)
It was broken. （把破损的一面给大家看，面露心痛之色。）
Who was my MP3 broken by? （转向全体同学。）
Was it broken by you, S1? (对前排的一个同学提问。)
（全班笑，然后开始猜测，教师引导学生用英语表述。）
S2: Was it broken by … yourself, Miss/Mr. …？
T: No, but it is a good try.
S3: Was it broken by your daughter?
S4: Was it broken by…?
T: Exactly. It was broken by my dog.
（板书）
was/were + P.P.
（教师板书划线部分，复习一般过去时被动语态结构。）
（教师事先在教室里观察，并利用一些破损的部件问学生一些问题。）
T：Was the desk broken by you, S5?
S5: No, it wasn’t.
T: When was it broken? Was it broken yesterday?
S5: No, it wasn’t.
T: Who was it broken by?
S6: Sorry, I don’t know.
T: OK, no one knows who it was broken by.
（指出其他破损的物品，如学生作业本、铅笔盒、钢笔等，要求学生仿照上面对话问答。）

S7：Are these your books?
S8：Yes, they are.
S7：When were they broken?
S8：They were broken yesterday.
S7：Who were they broken by?
S8：They were broken by ….
S7：Oh, pity.
S8：Yeah. But I have them repaired already.
T: OK. Good job. Boys and girls. English is spoken very well by you. I’m proud of you.
(因为场景明确，句型单一，大多学生能仿照句子，反应慢的学生靠单纯模仿来感悟，所以要及时鼓励，肯定他的进步，再推动他们进一步反思归纳语言结构。)
（板书划线部分，引导学生记忆、比较、归纳。）
（板书）
am / is / are + P.P.
(为新课做铺垫。)
T：Computers are used widely in every field. People search for information on the Internet. Scientists research on it too.
（板书）
research
（用彩笔强调一下构词。重读句子，对比句子，让学生自己体会和猜测词意。）
T: Scientists do experiment to research. So scientificresearch should be done carefully.
（板书）

（用彩笔强调一下构词，解释词性和词义变化的通常规律，领读生词。）

Step 2 Presentation 第二步 呈现（时间：10分钟）

1.（呈现重点词，为降低难度，先玩一个编故事的游戏。）
T: Boys and girls. Let’s have a game. I’ll give you four words on the blackboard. You work in groups. Each group makes a sentence with one of the words. Let’s see if we can form a story with five sentences.
（板书）
alien, planet, spaceship, humans’ culture
（调动学生的思维也为中下层面的学生提供一个记忆单词的机会，成绩较好的学生也有机会充分发挥。）
2.（呈现对话，让学生带着问题听录音。）
T: Boys and girls. We’ll listen to the dialog and answer the questions:
（板书）
（1）What are they going to do this Saturday evening?
（2）Is it a movie about alien?
（3）What can people do on Mars in that movie?
T: Boys and girls, can you answer the questions now?
（学生回答完问题，再次阅读1a,并注意关键信息。）
(教师与学生核对答案，及时给予学生帮助并处理文中重难点。)
（板书）
We will be able to do anything that can be done on the earth.（定语从句）
T: Pay attention to the sentence pattern and the words order.
3.（情态动词的被动语态。）
T：Look at the blackboard, here, this sentence. This part is modal verb passive voice. What can you find? How can we write modal verb passive voice? Compare with present passive and past simple passive.
(让学生在对比中感悟语法规则，然后教师再指正归纳。)
（板书）
modal verb + be + P.P.
T：Boys and girls, look at your books 1b. Find modal verb passive voice sentence.
(指导学生独立完成1b，核对答案。)
T：Now let’s read the dialog 1a aloud together.
Ss: Yes.
T: Let’s go through the dialog again. This time you should find out the key words with me.
wonderful movie, life in space, exciting
planets like Mars, in space, what fun

Step 3 Consolidation 第三步 巩固（时
生词表: