Unit6-When-was-it-invented--教学设计-教案

Unit6-When-was-it-invented--教学设计
教学准备
1. 教学目标
掌握一般过去时的被动语态的特殊疑问句
2. 教学重点/难点
一般过去时的被动语态的特殊疑问句结构是“疑问词+be动词+主语+动词的过去分词+其他？”
3. 教学用具
4. 标签
教学过程
Step 1 Warming up
T: Can you tell me some great inventions that are important in our daily life?
Ss: Yes. The mobile phone, the computer, the airconditioner, the fridge, the light and so on.
T: Yes. The inventions have changed our life.
Step 2 Presentation (1a)
Look at the four things in 1a. In what order do you think they were invented? Get the students to discuss them with their group. Then number them [1－4]．
Step 3 Listening (1b)(有一定难度，增设听力训练题见素材三)
1. Listen for the general idea of 1b.
The general idea of the conversation is about _______．
A. who invented the things
B. when the things were invented
C. where the things were invented
[答案] B
2. Listen for the specific ideas of 1b.
Get the students to listen and match the inventions with the years.
[答案] d；a；c；b
3. Check their work with the whole class.
Step 4 Pairwork (1c)
Student B, cover the dates. Student A, ask Student B when the things in the picture in 1b were invented. Then change roles and practice again.e.g.
A: When was the…invented?
B: I think it was invented in…
Step 5 Presentation
T: Look at the picture in 2a. There are some inventions on the table. What are they?
Ss: They are shoes with special heels, shoes with lights and hot ice-cream scoop.
T: They are small inventions and they can make our life more interesting and convenient. Two students are talking about them.
Step 6 Listening (2a－2b)
1. Get the students to listen and number the inventions [1－3] in the order they hear them in 2a.
2. Have the students listen again and complete the chart in 2b.
[答案] 1.3; 1; 2 2.changing; in the dark; serving
Step 7 Practice (2c)
Ask the students to make conversations in pairs using the information in 2b.e. g.
A: What are they used for?
B: They are used for…
Step 8 Roleplay (2d)
1. Read for the main idea of 2d.(略读，了解大意)
The main idea of 2d is about _______．
A. some small inventions
B. a small invention—the zipper
C. a school project
[答案] B
2. Read for the specific ideas of 2d.(细读，把握关键信息点)
Read the conversation again and find out the answers to the following questions.
(1)Who invented the zipper？(2)When was the zipper invented?
(3)When was it used widely?
[答案] (1)Whitcomb Judson. (2)In 1893. (3)Around 1917.
3. Read after the tape.
4. Read the conversation aloud in pairs.
5. Roleplay the conversation in pairs. Then go to the front of the classroom and perform it to the whole class.
Step 9 Language points(详见P212 课堂互动探究)
be used for, be invented by…
课堂小结
1. 一般过去时的被动语态表示主语是过去某个动作的承受者，谓语动词由“was/were＋动词的过去分词”构成。

2. 把主动语态中的主语放在介词by之后作宾语，将主格改为宾格(“by＋人称代词”短语可以省略)。

课后习题
将下列句子变被动语态
1.Edison invented the light bulb .
The light bulb _____ ______ _______ Edison.
2. Students like their teacher.
Their teacher _____ ____ by students.
单选
1. It’s useful for____ really cold ice cream.
A. scooping
B. scooped
C. scoop
D. scoops
2. Anna is ____ to choose her own clothes.
A. allowed
B. allows
C. allowing
D. allow
3.They won’t be back until the work____.
A. is done
B. do
C. does
D. will do
4.The task can ____ next week.
A. do
B. did
C. be done
D. be do。