Unit 9 When was it invented?（Section A Period 2）学案

课题 九年级 Unit 9 When was it invented? SectionA (3a-4) 第二课时
班级 姓名_______________
学习目标与重难点：
1.掌握重点短语：
短语：light bulb（电灯泡）,microwave oven（微波炉）, annoying inventions（恼人的发明）,the most helpful invention（最有用的发明）,on a tiny island（在一个小岛上）
2.背出句子:
(1) What do you think is the most helpful invention?
(2) The light bulb gives people more time to work and play every day.
3. 背诵3b
一、预习导学
1.在书本P70页划出上列单词和词组，并写出中文意思。
2.预习检测
( )1. A Knife is used for ________ things.
A cutting B. cut C cuts D to cut
( )2. Anna is ______to choose her own clothes.
A. allowed B. allows C. allowing D . allow
( )3. Pens ______writing .
A . used to B. are used as C. are used by D. are used for
( )4. __________ are used for seeing in the dark .
A The shoes with adjustable heels B. The battery –operated slippers
C. The heated ice cream scoop D. The flying disk
( )5. I can’t wake up in the morning . What shall I do ? Buy _______, it may help.
A. a light bulb B. a microwave oven C an alarm clock D. a binoculars
3.语言点导学
（1）What do you think is the most helpful invention? 你认为什么是最有用的发明？
do you think 在此处用作插入语，常置于疑问词之后，不可置于疑问词前，这个问句要用___________语序。
如：___________ do you think ___________ ___________ us English? 你认为谁将教我们英语
___________ do you think our life ___________ ___________ ___________ in 100 years?
你认为一百年后我们的生活会是什么样？
翻译：你认为我能做什么？_________________________________________________
（2） helpful adj. 有帮助的, 有益的
Eg: Mr. White is a very helpful man. 构词法：n + ful → adj
再如: use + ful → _____________ （ ） thank + ful → _____________ （ ）
beauty+ ful → _____________ （ ） care + ful → _____________ （ ）
（3）I think it would be better to have… 我认为拥有……将是更好的。
It’s better (for sb.) to do sth… 意思是“（某人）最好做某事”。= sb. would better to do sth.
如： It is better for you to walk to school. =_________________________________________________.
二、预习·疑问（通过认真预习，请你写下疑惑摘要，在预习准备课上与组员交流）
三、学习·研讨（根据教学目标与学生共同完成教学过程，同时解决学生的疑问）
活动（1）：导入
活动（2）：完成3a和3b
活动（3）：Groupwork 4
星级评定 （由教师评定，上课态度认真的给予一颗星，认真完成学习稿中的学习任务的再给予一颗星）
四、巩固·延伸
（一）翻译下列短语。
1.有用的发明 2.闹钟
3.微波炉 4.电灯泡
5.每天 6.想有一个收音机
7.整天听音乐 8.离开小岛
9.在一个小岛上 10.给人们更多的时间去工作
（二）用所给词的适当形式填空
1 .What do you think is the most_________ (help) invention?
2. This machine can be ________(operate) easily even a kid can use it.
3. Do you think it’s _____(good) to have a TV set than to have a radio?
4. You should listen to your teacher as ______(care) as possible.
五、课后练习
（一）词汇运用
1. He lives in a place __________ (call) Gum Tree.
2. It’s ______(use ) for scooping really cold ice cream .
3. What do you think is the most _______ (help) invention?
4. Do you think the alarm clock is an ________ ( annoy) invention?
5. I like the food that is (加热), it’s good for my health.
（二）介词填空
1. English is used ______ the second language in many countries.
2. These textbooks are used ______ students.
3. I used be shy when I was a little girl, but now I’m more outgoing.
4. Glasses are used helping us see the things clearly.
5. This picture is used make our class more interesting.
三、单项选择
( ) 1. The fish smells_____, I’d like to try some.
A. terrible B. bad C. well D. nice
( ) 2. More and more buildings___ in the town now.
A．were built B．have built C．is built D．are being built
( )3. We hope the students will go there_______.
A．as quickly as possible B．as soon as they will
C．as possible D．as quick as they can
( ) 4. —Do you know when she______?
—Sorry, I don’t. But I’ll let you know when she_______.
A．comes；comes B．will come；will come
C．comes；will D．will come；comes
( ) 5. More sheep_____ by the farmer since two months ago．
A．was sold B．were sold C．has been sold D．have been sold
( ) 6. Keys______ used for ______ the doors.
A. is, opening B. is, opened C. are, opening D. are opened
四、阅读理解
In the 13th century, the famous Italian traveler, Marco Polo, traveled a long way to China. During his stay in China, he saw many wonderful things. One of the things he discovered was that the Chinese used paper money. In western countries, people did not use paper money until the 15th century. However, people in China began to use paper money in the 7th century. A Chinese man called Cai Lun invented paper almost 2,000 years ago. He made it from wood. He took the wood from trees and made it into paper. He then put these pieces of paper together and made them into a book.
Now paper still comes from trees. We use a lot of paper every day. If we keep on wasting so much paper, there will not be any trees left on the earth. If there are no trees, there will be no paper. Every day, people throw away about 2,800 tons of paper in our city. It takes 17 trees to take one ton of paper. This means that we are cutting nearly 48,000 trees every day. Since it takes more than 10 years for a tree to grow, we must start using less paper now.
So how can we save paper? We can use both sides of every piece of paper, especially when we are taking notes. We can choose drinks in bottles instead of those in paper packets. We can also use cotton handkerchiefs(棉手帕) and not paper ones. When we go shopping, we can use fewer paper bags or reuse them later. If we all think carefully, we can help protect trees. But we should do it now, before it is too late.
( )1. Marco Polo when he was in China.
A. discovered Cai Lun invented paper
B. learned to make paper
C. saw a lot of wonderful things
( )2. People in the western countries first used paper money in _______ century.
A. 13th B. 15th C. 7th
( )3. About tons of paper are thrown away every day in our city.
A. 1,700 B. 2,000 C. 2,800
( )4. Which of the following is NOT the way of saving paper?
A. To use both sides of every piece of paper.
B. To use the paper bags more than once.
C. To grow more trees.
( )5. Which of the following is NOT true?
A. If we keep on wasting paper, we have no paper to use.
B. It is never too late to plant trees for paper.
C. The Chinese used paper money much earlier than the people in western countries.
星级评定 （由教师评定，态度端正并认真完成学习稿中的拓展练习并订正好的给予一颗星）
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