内容正文:
Unit 13 We’re trying to save the earth!
Section A (Grammar Focus-4c) 导学案
班级:
学生姓名:
科目:
授课教师:
学习目标
通过本节课学习,学生能够:
1. 学习理解:
能准确识别并理解现在进行时、used to 结构、被动语态、现在完成时和情态动词这五种语法结构的形式与含义,梳理它们在环保主题语境中的具体用法及语法功能。
2. 应用实践:
能正确运用这五种语法结构完成 4a、4b 练习,运用所学语法结合环保话题进行句子创作、对话表达,并用情态动词提出环保建议。
3. 迁移创新:
能迁移所学语法知识列举环保行为并与同伴讨论表达观点,结合生活实际撰写包含目标语法的环保短文,综合阐述环保重要性及个人做法。
学习
重难点
1. 教学重点
掌握环保主题下核心语法结构:现在进行时表持续行动、情态动词表建议、被动语态表客观现象的准确运用;积累并运用“environmental、reusable”等核心词汇及“take part in、save electricity”等短语;能围绕环保话题完成简单交流与观点表达,如在4c活动中列举并说明环保行动。
2. 教学难点
多种语法结构在环保语境中的综合运用,如现在完成时与情态动词的结合表达;情态动词“should/must/may”的语义区分与得体使用;在4c讨论中实现话题的深入拓展,而非简单罗列观点。
课前预习
一、核心结构回顾:
1. She ________ ________ ________(live)in a small town, but now she lives in a big city.(used to do sth)
2. English ________ ________(speak)in many countries.
3. Listen! Someone ________ ________(sing)in the next room.
4. He ________ ________(learn)English for five years.
5. We ________ ________(protect)the environment.
二、易错点自查:判断下列句子正误,若错误请改正并说明原因(聚焦易混淆点)
① He used to playing basketball after school. ( ) 改正:________ 原因:________
② The letter was wrote by her yesterday. ( ) 改正:________ 原因:________
③ They have gone to Beijing twice. ( ) 改正:________ 原因:________
三、用目标结构补全句子:
Factories ________ ________ ________(not allow)to put waste into rivers.
The students ________ ________(clean)the park now.
课堂探究
Grammar
(1) 目标结构1:used to do sth
规则总结:
肯定句 主语 + used to do sth The river used to be clean.
否定句 主语 + didn’t use to do sth The river didn’t use to be clean.
一般疑问句 Did + 主语 + use to do sth? Did the river use to be clean?
肯定回答 Yes, 主语 + did. Yes, it did.
否定回答 No, 主语 + didn’t. No, it didn’t.
易混点辨析:对比“used to do sth”“be used to doing sth”“be used to do sth”的差异,完成结论填空
“used to do sth”表示“过去常常做某事,现在没做了”(如PPT中“河流过去干净,现在不干净”);
“be used to doing sth”表示“习惯于做某事”(如PPT中“I am used to playing basketball after dinner”);
“be used to do sth”表示“被用于做某事”(如PPT中“This kind of knife is used to cut things”)。
即时练
1. You used _________ (go) to school by bike,didn't you?
2. 我习惯于晚饭后打篮球。I ____ ____ ____ _____basketball after dinner.
3. 这种小刀是用来切东西的。This kind of knife ____ ____ ____ ____ things.
4. He used to spend much time playing computer games.(改一般疑问句)____ ____ ____ ____ ____ much time playing computer games?
(2) 目标结构2:被动语态
规则总结:
一般现在时 am/is/are + done Some laws are developed to stop the pollution.
一般过去时 was/were + done These trees were cut down by the workers last night.
一般将来时 will be + done In the future, more and more work will be done by the robots.
含情态动词 情态动词 + be + done: I think teenagers should be allowed to choose their own clothes.
即时练
1. The Secondary School Entrance Exam _______ (hold) in June.(一般现在时)
2. A strange noise __________ (hear) by his mother last night.(一般过去时)
3. A wide road _____________ (build) between the two villages by those people next year.(一般将来时)
4. Actions should______________(take) to protect the earth.(情态动词)
(三)目标结构3:情态动词
规则总结:
情态动词后接动词原形(如“should take”“can’t play”);
情态动词没有人称和数的变化(如“he should”“they can”,无需加“s”);
常用情态动词有can/could, may/might, must/have to, should/ought to, would, need等。
即时练
1. —Could you play the piano at the age of five?
—No, I ______. I started at six.
A. can’t B. shouldn’t C. needn’t D. couldn’t
2. —Must I return this book before Friday, Sir?
—No, you ________, dear. You can keep it for two weeks.
A. can’t B. shouldn’t C. mustn’t D. needn’t
3. —How long can I keep these books?
—According to the library rules, you ________ return them within 7 days.
A. must B. might C. could D.will
4. —You ________ take photos here! Look at the sign. It says “No photos”.
—Sorry, I won’t.
A. must B. need C. mustn’t D. needn’t
(四)目标结构4:现在进行时
结构与含义:结合PPT例句“People are throwing rubbish to the river. Factories are putting waste into the river.”及“现在进行时”板块讲解,完成总结
核心结构:主语 + be (am/is/are) + 动词现在分词(如“are throwing”“is putting”);
主要含义:①表示正在发生或进行的动作(如“Look! They are cleaning the park.”);②表示当前一段时间内的活动或现阶段正在进行的动作(如“People are trying to save the earth.”);
标志性词:now, right now, Look!, Listen!(匹配PPT列举内容)。
即时练1:写出下面动词的现在分词。
make _______ stop _______
begin _______ watch _______
buy ________ save _______
put ________ listen _______
drive _______ see _______
即时练2
1. Look! Some old people ________ in the park.
A. sings B. sing C. are singing
2. —Don’t make noise! The children ________online.
—Sorry, I won’t.
A. studies B. are studying
C. studied D. were studying
3. —Peter, what are you doing?
—Oh, I ________ a report about national heroes.
A. will write B. am writing
C. wrote D. have written
(五)目标结构5:现在完成时
核心结构:主语 + have/has + 动词过去分词(如“has taken”“has kept”);
时间标志:for+一段时间、since+过去时间点/从句(一般过去时)(匹配PPT标注内容)。
即时练1:写出下面动词的过去分词。
clean _______ live _______
study _______ plan _______
put ________ begin _______
teach________ get _______
drive _______ see _______
即时练2
1. In the past few years, great changes__________ (take) place in Lianyungang.
2. I ___________ (not read) the book Little Women yet, but I'll let you read it first.
3. He ____________(not come) yet. What do you think has happened to him?
4. They __________________ (marry) for fifty years.
5. Linda_____________(live) here since she was five years old.
6. I _______ to the West Lake four times, but I will go there again this summer.
A.have gone B.have been C.had gone
7. —Where is Mr. Brown?
—He ________ Australia. He ________ there last year.
A.has been to; has been B.has been to; has gone C.has gone to; went
8. I _______Shijiazhuang for three years.
A.have been to B.have been in C.have gone to
Practice
1. Work on 4a.
2. Work on 4b.
3. Work on 4c.
Exercises
1、 用所给词的适当形式填空。
1. The old man used _____ (be) a teacher.
2. We should _____ (clean) the room every day.
3. Look! Tom _____________ (sleep) in his room.
4. Lots of trees _______________(plant) on the hill every year.
5. He _________ (live) here for 20 years.
二、选择题
1. He promised to pick me up . However, he_____ yet.
A. didn’t arrive B. doesn’t arrive
C. isn’t arriving D. hasn’t arrived
2. Ba Jin, one of the greatest writers in China, ___ as “People’s Writer”.
A. is regarded B. has regarded
C. is regarding D. regards
3. —Where is Tom?
—He ______ in his room.
A. is reading B. reads C. read D. was reading
4. Her son _______ coffee, but now he ________ milk.
A. used to drink ; is used to drinking
B. used to drinking ; drinks
C. is used to drinking ; used to drink
D. is used to drink ; is drinking
课后作业
基础作业:默写本节课10个核心词汇(environmental, project, electricity等)和5个核心短语(take part in, save electricity等),并任选3个短语各造1个环保相关句子。
进阶作业:基于课堂4c小组讨论的“环保行动清单”,补充2条新的环保建议(如“减少使用一次性筷子”“提醒家人随手关水龙头”),并用本节课语法结构描述每条建议的理由。
拓展作业:环保访谈记录:采访1位家人或朋友,询问其“过去与现在的环保习惯差异”“认为最重要的环保行动”,用英语记录3个关键问答,要求:访谈内容中体现used to(过去习惯)、现在完成时(已做的环保行动)。
【参考答案】
课前预习
一. 核心结构回顾
1. used to live
2. is spoken
3. is singing
4. has learned
5. should protect
二. 易错点自查
① (×) 改正:He used to play basketball after school. 原因:“used to”后接动词原形,表“过去常常做某事”
② (×) 改正:The letter was written by her yesterday. 原因:被动语态中“be”后接动词过去分词,“write”的过去分词是“written”
③ (×) 改正:They have been to Beijing twice. 原因:“have gone to”表示“去了某地未回”,“去过某地”应用“have been to”
三. 语境应用热身
1. aren't allowed
2. are cleaning
课堂探究
Grammar
(一)used to do sth
1. to go
2. am used to playing
3. are used to cut
4. Did he use to spend
(二)被动语态
1. is held
2. was heard
3. will be built
4. be taken
(三)情态动词
1. D
2. D
3. A
4. C
(四)现在进行时
即时练1(现在分词)
1. making
2. stopping
3. beginning
4. watching
5. buying
6. saving
7. putting
8. listening
9. driving
10. seeing
即时练2(选择题)
1. C
2. B
3. B
(五)现在完成时
即时练1(过去分词)
1. cleaned
2. lived
3. studied
4. planned
5. put
6. begun
7. taught
8. got
9. driven
10. seen
即时练2(填空题+选择题)
1. have taken
2. haven't read
3. hasn't come
4. have been married
5. has lived
6. B
7. C
8. B
Practice
Exercises
一、用所给词的适当形式填空
1. to be
2. clean
3. is sleeping
4. are planted
5. has lived
二、选择题
1. D
2. A
3. A
4. A
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