摘要:
该初中英语导学案围绕“Greener Planet, Better Home”主题,聚焦前缀re-构词规律及现在完成时for/since用法,通过基础自测(英汉互译、选词填空)和话题激活(结合生活经验的环保问答)搭建学习支架,引导学生初步感知语法点与环保语境的关联。
以“环保行动”为核心语境,学习目标分层设计,迁移创新环节的“我的环保行动”口头展示及评价量规,有效提升语言表达与逻辑思维(语言能力、思维品质),多样化练习(语篇填空、看图问答、书面表达)结合真实情境,助力学生掌握语法应用与自主学习方法(学习能力)。
内容正文:
Unit 2 Greener Planet, Better Home
Grammar in Use导学案
课型:语法应用课
主题语境:人与自然・环保行动与语法功能运用
1.学习理解目标:通过例句观察、图片辅助与规则梳理,识别前缀 re- 的构词规律与 “再、重新” 的核心含义,掌握现在完成时中 for 与 since 的用法区别,准确区分二者的搭配规则,独立完成词形转换、规则识别与基础填空。
2.应用实践目标:在词形变换、句子填空与情境问答练习中,正确运用 re- 前缀构成新词完成语篇填空,正确运用 for/since 搭配现在完成时描述动作的延续时长,完成句型填空与看图问答时语法规范、表达准确。
3.迁移创新目标:在 “我的环保行动” 主题交流活动中,综合运用 re- 前缀词汇与现在完成时(for/since)描述自己的环保行动及持续时间,完成 1 分钟口头展示,涵盖 “行动内容 + 持续时长” 核心要点,内容贴合生活、表达连贯、逻辑清晰。
学习重点
1.前缀 re- 的构词规律与词义变化;
2.现在完成时中 for 与 since 的用法区别与搭配规则;
3.结合环保语境正确运用两个语法点。
学习难点
1.准确把握不同词根加 re- 后的词形与词义;
2.在语境中正确区分 for/since,准确使用延续性动词的现在完成时。
Part 1 基础自测:语法初探
1. 英汉互译
汉译英
英译汉
1. 再使用;重复利用 ______________
5. recycle ______________
2. 重新考虑 ______________
6. renew ______________
3. 重建;改建 ______________
7. prefix ______________
4. 重访;再参观 ______________
8. present perfect tense ______________
2. 选词填空(for /since)
1.I have lived here ______________ 2010.
2.She has learned English ______________ 5 years.
3.They have been in the club ______________ last month.
Part 2 话题激活・思维预热
结合生活经验,用中文简要作答。
1.你坚持做环保小事多久了?比如垃圾分类、节约用电。
__________________________________________________
2.你知道哪些带有 “重新、再” 含义的环保行为?至少写出 2 个。
__________________________________________________
__________________________________________________
__________________________________________________
模块一 语法点一:The prefix re-
对应教材前缀 re- 板块 Activity 1-3
核心功能:前缀 re- 加在动词前,通常表示 “再、重新、又” 的含义,使原动词增添 “重复做某事” 的语义。
【导学任务 1 观察感知・发现规律】
对应教材 Activity 1
任务指令:观察图片与例句,关注加粗单词,找出共同前缀,总结构词规律。
例句展示
① It’s a good idea to reuse plastic bags as waste bags.
② Scientists have found a new way to recycle waste paper into new paper products.
③ Our community has renewed calls for cleaning up the waste along the river.
探究任务:
1.以上单词共同的前缀是______________,含义是______________。
2.use(使用)+ re- → reuse(______________)
3.cycle(循环)+ re- → recycle(______________)
4.new(新的)+ re- → renew(______________)
【导学任务 2 词形变换・基础操练】
对应教材 Activity 2
任务指令:结合句意,用方框内单词加前缀 re- 构成的新词填空,每词限用一次。
take visit write build
1.We will ______________ the insect museum to learn more about ants.
2.Whenever there is pollution again, we need to ______________ action to stop it.
3.After the earthquake, people ______________ the city with the help from all over the world.
4.We can help ______________ world history by saving every drop of water.
【导学任务 3 语篇填空・迁移运用】
对应教材 Activity 3
任务指令:阅读短文,从方框中选择合适的词补全短文,每词限用一次。
recreate reuse reduce rethink
Many people use plastic bags to carry their things and throw the bags away. Perhaps, we should 1. ______________ about this and find a better way to use them. One of the ways is to 2. ______________ them. After we bring our things home in a plastic bag, we can save it and use it again for something else. This is a great way to 3. ______________ the number of new plastic bags. By reusing plastic bags, we can cut down pollution and 4. ______________ a greener world.
模块二 语法点二:Present perfect tense (II)
对应教材现在完成时板块 Activity 1-3
核心功能:现在完成时可以表示动作从过去持续到现在,常用 for + 时间段、since + 过去时间点 来表示动作持续的时长。
【导学任务 1 对话感知・初识用法】
对应教材 Activity 1
任务指令:两人一组朗读对话,理解对话大意,找出其中的现在完成时句子,体会 for/since 的用法。
核心对话
A: Did you take part in the speech about waste sorting last Saturday?
B: Yes, I did. I have learned a lot about waste sorting since I listened to the speech.
A: Me too. I have kept sorting out all the waste at home for five days. Now I am really good at it.
探究任务:
1.对话中 “since + 句子(过去时间点)”,表示动作从________________开始持续到现在。
2.对话中 “for + 时间段(five days)”,表示动作持续了______________。
【导学任务 2 表格梳理・归纳规则】
对应教材 Activity 2
任务指令:观察例句,完成表格,归纳 for 与 since 的用法区别,并补全句子。
搭配
用法
示例
for
+ ______________
______________ two weeks
since
+ ______________
______________ two weeks ago
规则运用・补全句子:
1.We haven’t seen any waste in the river ______________ several months.
2.— How long has your city sorted waste?
— ______________ 2020.
3.I have been in an environmental group ______________ the new term began.
【导学任务 3 看图问答・情境运用】
对应教材 Activity 3
任务指令:根据图片提示与括号内的信息,用 for 或 since 回答问题,完整写出句子。
1.How long has Li Wei kept sorting waste? (3 years ago)
_______________________________________________________
2.How long has Lingling been in the tree planting activity? (one year)
_______________________________________________________
3.Have you ever recycled to protect our environment? If so, how long have you been like this?
_______________________________________________________
模块三 迁移创新・核心任务
【主题任务:“我的环保行动” 主题分享会】
真实情境:班级举办 “我的环保行动” 主题分享会,以小组为单位进行展示。
任务指令:结合生活实际,介绍 2-3 项你坚持的环保行动,并用 for/since 说明每项行动持续的时间,完成 1 分钟左右的口头展示。
评价量规:
等级
评价标准
★★ 合格
能说出 2 项环保行动,正确使用 1 个 for/since 句子,表达基本通顺
★★★ 良好
能说出 2-3 项环保行动,正确使用 for/since 表达持续时间,语法准确,逻辑清晰
★★★+ 优秀
能结合 re - 前缀词汇丰富表达,时态准确,语言流畅自然,有感染力
________________________________________________________________________________
一、根据句意及首字母提示补全单词
1.We can r______________ plastic bottles instead of throwing them away.
2.People began to r______________ the city after the big storm.
3.I have kept reading English ______________ half an hour every morning.
4.My sister has been a volunteer ______________ 2022.
5.We should r______________ our lifestyle to live a greener life.
二、单项选择
1.We can add the prefix ______________ to “use” to make a new word “reuse”.
A. un- B. re- C. -ful
2.My family has lived in this city ______________ 15 years.
A. for B. since C. in
3.He has worked in the environmental club ______________ he came to our school.
A. for B. since C. when
4.—How long have you ______________ sorting waste?
—For about two months.
A. kept B. keep C. keeping
5.—______________ have you been in the Green Group?
—Since last term.
A. How often B. How soon C. How long
三、选词填空
从方框中选择合适的词,并用其适当形式填空,每词限用一次。
reuse rethink rebuild recycle
1.We should ______________ the way we deal with rubbish.
2.It’s a good idea to ______________ water to clean the floor.
3.Workers ______________ the old park last year. Now it’s more beautiful.
4.Paper and glass can be ______________ to make new things.
四、句型改写
按要求改写下列句子,每空一词。
1.I have kept exercising for three years.(改为同义句)
I have kept exercising ______________ three years ______________.
2.They have been friends since 2019.(对画线部分提问)
______________ ______________ have they been friends?
3.reuse, we, plastic bags, can(连词成句)
________________________________________________
五、书面表达小练笔
写 4-5 句话,介绍你的环保行动及坚持的时间,要求用上 for 和 since。
____________________________________________________________
____________________________________________________________
____________________________________________________________
____________________________________________________________
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Unit 2 Greener Planet, Better Home
Grammar in Use导学案
Part 1 基础自测:语法初探
1. 英汉互译
汉译英
答案
英译汉
答案
1. 再使用;重复利用
reuse
5. recycle
回收利用;循环利用
2. 重新考虑
rethink
6. renew
重新开始;更新
3. 重建;改建
rebuild
7. prefix
前缀
4. 重访;再参观
revisit
8. present perfect tense
现在完成时
2. 选词填空(for /since)
1.since
2.for
3.since
Part 2 话题激活・思维预热
参考示例(合理即可)
1.示例:我坚持垃圾分类已经半年了;我从去年开始随手关灯节约用电。
2.示例:重复利用塑料袋、回收废纸、重新利用淘米水浇花等。
模块一 语法点一:The prefix re-
【导学任务 1 观察感知・发现规律】
答案:
1.re-;再、重新、又
2.重复使用;再利用
3.回收利用;循环利用
4.重新开始;更新
【导学任务 2 词形变换・基础操练】
1.revisit
2.retake
3.rebuilt
4.rewrite
【导学任务 3 语篇填空・迁移运用】
1.rethink
2.reuse
3.reduce
4.recreate
模块二 语法点二:Present perfect tense (II)
【导学任务 1 对话感知・初识用法】
答案:
1.过去某个时间点
2.多长时间(时长)
【导学任务 2 表格梳理・归纳规则】
搭配
用法(答案)
示例(答案)
for
a period of time(时间段)
For two weeks
since
a point in time (in the past)(过去时间点)
Since two weeks ago
规则运用・补全句子答案:
1.for
2.Since
3.since
【导学任务 3 看图问答・情境运用】
参考示例
1.He has kept sorting waste since 3 years ago.
2.She has been in the tree planting activity for one year.
3.Yes, I have. I have been recycling for two years.
模块三 迁移创新・核心任务
分享参考示例(对应★★★等级)
I have done many things to protect the environment. I have kept sorting waste at home for six months. I have reused plastic bags since last year. I also help recycle old books. I think small actions can make a big difference.
________________________________________________________________________________
一、根据句意及首字母提示补全单词
1.recycle / reuse
2.rebuild
3.for
4.since
5.rethink
二、单项选择
1.B
【解析】前缀 re - 加在 use 前构成 reuse,表示 “再利用”,符合构词规律。
2.A
【解析】“15 年” 是时间段,用 for 搭配现在完成时表示动作持续的时长。
3.B
【解析】“他来我们学校” 是过去的时间点,用 since 引导时间状语。
4.A
【解析】现在完成时结构为 have/has + 过去分词,keep 的过去分词是 kept。
5.C
【解析】答语是持续的时长,问句用 How long 提问 “多久”。
三、选词填空
1.rethink
2.reuse
3.rebuilt
4.recycled
四、句型改写
1.since; ago
2.How long
3.We can reuse plastic bags.
五、书面表达小练笔
参考示例
I try to live a green life. I have kept saving water for three years. I have been in the school environmental club since last term. I often reuse paper and bottles. I will keep doing these things to protect our planet.
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