Unit 13 We’re trying to save the earth! Section B3 (3a-Self check)优学案（含答案）

Unit 13 We’re trying to save the earth!
Section B3 (3a-Self check)
【学习目标】
1．复习并巩固本单元出现的重点词汇和短语。
2．学习并掌握重点句型：
(1) Which parts may be less nice and need to be improved?
(2) Give suggestions or possible ways to solve the problems.
3. 学会写关于所在城市环境问题以及个人建议的信件。
【重点和难点】
1. 复习现在进行时、used to句型、被动语态、现在完成时和情态动词。
2. 将读写任务结合起来锻炼写作及对语言综合运用能力。
【课前预习】
一. 翻译下列短语:
1. 环境问题_________________
2. 市长 ______________ 3. 公共交通_________________
4. 水污染_________________
5. 陆地污染_________________
6. 变得越来越糟糕___________________
7. 减少污染_______________
二. 阅读103-104页的课文，翻译句子。
1. 哪些部分需要改进？
________________________________________
2. 提出解决问题的建议或可能的方法。
________________________________________
3. 空气污染越来越严重了。
________________________________________
4. 我们已经看到了环境的许多变化。
________________________________________
【合作探究】
探究一 Let's collect words，phrases and sentences.
1. I can write. (我会写)
翻译下列短语：
(1) 有一个好的环境 ______
(2) 有待提高 ______
(3) 变得越来越严重______
(4) 乘坐公共交通工具______
2. I can translate. (我会译)
(1) 他给父母带来很多烦恼。
He ______ his parents ______ ______.
(2) 我的表需要修了。
My watch needs ______.
(3) 空气污染现在变得越来越严重了。
The air pollution is ______ ______ and ______.
(4) 在环境方面我们已经看到了很多变化。
We have ______ ______ ______ in the environment.
探究二 知识链接
1. Which parts need to be improved?
need作实义动词，意为“需要”，后接名词、代词、动词-ing形式及带to的动词不定式作宾语。need后面接动词-ing形式时，动词-ing形式表被动。此时主语常为某物。
其用法如下：
（1）need sth.“需要某物”
e.g. I need your help. 我需要你的帮助。
（2）Need to do sth. “需要做某事”
e.g. Do you need to go at once? 你需要马上去吗？
（3）need doing=need to be done“（某事）需要被做”
e.g. The bridge needs repairing. = the bridge needs to be repaired.
这座桥需要修理了。
【拓展】
（1）need还可用作名词，意为“需要” 。
e.g. A friend in need is a friend indeed.
（2）need作情态动词时，意为“需要；必须”，无人称或数的变化，后接动词原形。
（3）由need引出的一般疑问句，肯定回答常用must或have to，否定回答常用needn’t。
e.g. --Need I answer the question?
--Yes, you must./ Yes, you have to./ No, you needn’t.
2. The air pollution is getting worse and worse.
worse and worse意为“越来越糟”，其结构为：比较级+ and+比较级 或 more and more+原级（多音节或部分双音节词），意为“越来越……”。
e.g. He is getting taller and taller.
The flower are more and more beautiful.
【拓展】比较级的常用句型：
（1）甲+be+形容词比较级+ than+乙 或 甲+实义动词+副词比较级+ than+乙，甲比乙……。
e.g. Tom is taller than Kate.
I got up earlier than my mother this morning.
（2）甲+be+（倍数+）形容词比较级+ than+乙或甲+实义动词+（倍数+）副词比较级+ than+乙, 甲比乙……几倍.
e.g. This room is three times bigger than that one. He runs three times faster than his brother.
（3）甲+be+ the +形容词比较级+ of the two+… 意为“甲是两者中较……的 ”
e.g. Look at the two boys. My brother is the taller of the two.
（4）The+ 比较级，the+ 比较级, 意为“越……，越……”。
e.g. The busier my mother was, the happier she felt.
（5）疑问词+be+形容词比较级，甲or乙？ “甲和乙哪个更……”？
e.g. Which is bigger, the earth or the moon?
（6）疑问词+实义动词+副词比较级，甲or乙？“哪一个更……，甲还是乙? ”
e.g. Who draws better, Jenny or Danny?
探究三 写作专题
【单元写作目标】
本单元的话题是“Protecting the environment(保护环境)”，讨论了各种污染及其解决办法。本话题常见的命题方式有提示性作文和看图作文等，体裁通常为记叙文、议论文等。
单元写作素材
(一) 单元话题短语积累
1. 不要乱扔垃圾______
2. 成立；建立______
3. 采取行动______
4. 关掉______
5. 在……中起作用______
6. 打扫______
7. 好好利用某物 ______
(二) 单元话题句子积累
8. 我们的环境正变得越来越糟。
Our environment ______ ______ ______ ______ ______.
9. 它不仅可以保护环境，而且对我们的健康有好处。
It ______ ________ can protect the environment，______ ______ ______ ______ ______ our health.
10. 保护环境是每个人的责任。
______ ______ ______ ______ to protect the environment.
话题范文剖析
假如你校英文报近期开展“保护环境，从我做起”的主题演讲活动，要求每位学生写一封倡议书，号召全校师生从小事做起，维护我们赖以生存的环境。请你据此写一封英文倡议书。
要求：
1．语句通顺，语法正确，可适当发挥；
2．词数80左右，开头已给出，不计入总词数。
◆◆审题指导
1．文体：应用文(倡议书)
2．时态：一般现在时
3．注意事项：注意段落布局，恰当地使用复合句、连接词，增加得分点。
◆◆范文欣赏
Dear teachers and students，
A clean environment can help people feel happy and healthy. But now our environment has become worse and worse. So how can we help to protect it? Here are some ways.
First we can stop driving our private cars. We can go to school or work on foot or by bus. It not only can protect the environment，but also is good for our health. Second, we are supposed to sort the rubbish into different kinds because some can be reused or recycled. Third，we should turn off the lights when leaving a room. What's more，stop littering! It's necessary to put things you don't need in the bin.
There's a lot for us to do.I think if everyone does something，our environment will become better and better.
单元写作练笔
假如你是王刚。上周日你们班在学校附近的公园里组织了一次环保活动。请你根据下面的提示，写一篇英语短文，简单描述这次活动，并谈谈你的感想。
提示：
1．清理废纸、塑料袋等废弃物；
2．树立标牌，告诉游客要爱护花草树木；
3．向游客宣传污染的危害以及保护环境的重要性。
要求：
1．包含所有提示内容，可适当发挥；
2．不少于80词。
_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
【课时小结】
1. 环境问题 environmental problems
2. 市长 city mayor
3. 公共交通 public transportation
4. 水污染 water pollution
5. 陆地污染land pollution
6. 变得越来越糟糕 get worse and worse
7. 减少污染reduce pollution
8. Which parts need to be improved?
9. Give suggestions or possible ways to solve the problems.
10. The air pollution is getting worse and worse.
We have seen many changes in the environment.
【达标检测】
Ⅰ. 单项选择。
( ) 1.You ____________ drive your car so fast. It’s very dangerous.
A. wouldn’t B. shouldn’t C. couldn’t D. mightn’t
( ) 2. The buildings ______ by the government last year.
A. was pulled down B. are pulled down
C. were pulled down D. will be pulled down
( ) 3. Mary ______ to school by bike when she lived in China.
A. use to go B. was used to go C. was used going D. used to go
( ) 4. The pollution is serious. We must do something to make our environment _________.
A. cleaning B. cleaner and cleaner
C. more and more clean D. cleaning and cleaning
( ) 5. He likes _______ furniture, so everything in his room is made of ________.
A. wooden; wooden B. wood, wood C. wooden, wood D. wood, wooden
Ⅱ. 用所给单词的适当形式填空。
1. As Chinese, we should take active part in the?__________ (protect) of the environment.
2. We can make our lives better and easier with a little?__________ (create).
3. The man sailed across the sea alone by his?__________ (wood) boat.
4. We should protect the environment by the?___________ (science) method.
5. You shouldn’t wait until too late to understand the?__________?(important) to protect the environment。
Ⅲ. 根据汉语提示完成英语句子，每空一词。
1. 你能给出一个可能处理这些问题的办法吗？
______ you please give _______ ways to _______ the problems?
2. 我们的河流被工厂污染了。
Our rivers ______ _______ _______ factories.
3. 这是一张木床。
This is a _______ _______.
4. 他们用旧牛仔制作了许多手提袋。
They ______ old jeans ______ ______ many handbags.
【自我评价】
1. 本课我学会了什么？
______________________________________________________
2. 通过本课的学习，我还有哪些疑问？
_______________________________________________________
参考答案：
【课前预习】
一. 1. environmental problems
2. the city mayor
3. public transportation
4. water pollution
5. land pollution
6. get more and more serious
二.
Which parts need to be improved?
Give suggestions or possible ways to solve the problems.
The air pollution is getting worse and worse.
We have seen many changes in the environment.
【合作探究】
探究一
1. 1) have a good environment 2) need to be improved
3) get worse and worse 4) take public transportation
2. 1) caused；much trouble 2) repairing
3) getting worse；worse 4) seen many changes
探究二
1. stop littering anywhere 2. set up 3. take action 4. turn off 5. play a part in
6. clean up 7. put sth. to good use 8. is becoming worse and worse
9. not only；but also is good for 10. It is everyone's duty
探究三
Our class organized an environmental protection activity in the park near our school last Sunday. We did lots of helpful things in the park. First，we collected the rubbish，such as waste paper and plastic bags. Second，we set up several boards to ask the tourists to take good care of the flowers and trees. Finally，we gave a speech on the harm of pollution and the importance of protecting the environment.
I think it is everyone's duty to protect the environment. If we don't take action now，we'll have few comfortable places to stay in the future.
【达标检测】
一、BCDBC
二、1.protection 2. creativity 3. wooden 4. scientific 5. importance
三、1. Could, possible, solve 2. are polluted by 3. wooden bed 4. use, to make