Unit 6 Electricity Period 3 Grammar课件+教案+导学案

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名称 Unit 6 Electricity Period 3 Grammar课件+教案+导学案
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更新时间 2022-03-22 16:50:17

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中小学教育资源及组卷应用平台
Module 3 Unit 6 Electricity -Grammar导学案
学生姓名 班级 序号
课题内容 Grammar A, B, C
学习目标与核心素养 Knowledge objectives: 了解情态动词can, may, must的常见用法Skill objectives: 学会使用情态动词can, may, must来谈论电以及使用安全。3.Emotional objectives: 通过讨论情态动词can, may, must的常见用法,加强自主合作探究以及团队合作意识。
学习重点 讨论情态动词can, may, must的常见用法
学习难点 使用情态动词can, may, must来谈论电以及使用安全。
翻阅语法书或上网搜索完成下面表格;并进行记忆
课前查阅
定义:
是一种本身有一定词义,表示说话人的 ________、_______或________的________。
情态动词否定式在其后加“________”。
特点:1. 无________________
2. 后面须接________一起作谓语
3. 否定式在其后加“________”
(一)can
表示_________(体力、知识、技能)。eg.____________________________________.
2)表示_____________,此时可与_____________互换。在疑问句中还可用could, might代替,不是过去式,只是_____________,不能用于肯定句和答语中。
eg.____________________________________.
3) can表示__________________(不用于疑问句)。
eg.____________________________________.
(二)may
1. 表示______________。
eg.____________________________________.
否定回答时可用___________或___________表示“___________”。
用May I...?征徇对方许可时比较正式和客气,而用Can I...?在口语中更常见。
2.may表示_______________(不用于疑问句)。
__________ 是may的过去式,不表示过去的时间,只表示可能性比may小。
eg.____________________________________.
(三)must
1.表示_______________________。
eg.____________________________________.
2. must与have to 的区别
must是说话人的______________,而have to则强调______________。must只有一般现在时,have to ______________。
eg.____________________________________.
____________________________________.
在回答must引出的一般疑问句时,如果是否定回答,不能用mustn't(禁止,不准),而用_____________________(不必)。
eg.____________________________________
____________________________________
3.must表示________________(只用于肯定的陈述句)。
eg.____________________________________.
探究点一:情态动词can的用法
1)表示能力(体力、知识、技能)。
Eg.
We can use electricity to do many things.
We cannot/can't see electricity.
Can you think of an example
Yes, I can./No, I cannot/can't.
Fill in the blanks based on the pictures.
The children ________ their parents with housework.
_____ you _____ a picture with the computer
I ______________ like Gu Ailing or Su Yiming, but I want to learn.
2)表示_____________。
—— Can I play computer games
—— Yes, you can. / No, you can't.
3) can表示__________________(不用于疑问句)。
A broken wire can cause a fire.
探究点二:情态动词may的用法
1) 表示______________。
eg. ①—— May I look at your new computer
   —— No, you mustn't.
  ②—— May I make a cake with the cooker
   —— Yes, you can. (No, you can't / mustn't. )
may表示_______________(不用于疑问句)。
might是may的过去式,不表示过去的时间,只表示可能性比may小。
eg. He may/might be very busy now.
Your mother may/might not know the truth.
探究点三:情态动词must的用法
1) 表示_______________________。
You must keep the wire from the children.
2) must与have to 的区别
eg. The power is off now. We must find out what's wrong.
I had to turn down the TV when my parents were reading.
must是说话人的_________,而have to则强调_________。must只有一般现在时,have to 有更多的时态形式。
—— Must we turn off the fridge when we leave home
—— Yes, you must.
—— No, you don't have to / you needn't. 
在回答must引出的一般疑问句时,如果是否定回答,不能用mustn't(禁止,不准),而用_____________________(不必)。
must表示________________(只用于肯定的陈述句)。
eg. You're good friends, so you must know each other's hobby.
一、单选题
1.Look, little Jim is swimming so fast. I__________ believe my eyes.
A.shouldn't B.can't
C.mustn't D.needn't
2.—The work is too hard for me. I __________finish it on time.
—__________! I can help you.
A.can't; Don't worry B.mustn't; Don't worry
C.can't; All the way D.mustn't; All the way
3.—I hear you've got a new phone. ___________ I have a look
—Yes, certainly.
May B.Do
C.Shall D.Should
4.—May I smoke here, please
—I am afraid you ___. This is a non-smoking area.
can B.can't
C.may D.may not
5.We can eat in the cafe. But we ___ eat in the classroom.
A.can B.didn't C.can't D.aren't
6.You ___ cross the road when the traffic lights are red.
A.can B.must C.mustn't D.needn't
7.___ you bring the book to school
A.Are B.Is C.Can D.Please
8.You ___ stop when the traffic light turns red.
A.can B.had better C.need D.must
9.Many students come from poor families and they ___ afford school lunches, so the government is trying to help them.
A.needn't B.shouldn't
C.can't D.mustn't
10.I must _____ off the TV when we don't watch it.
A.turned B.turns C.turning D.turn
11.Everyone ___ pick the flowers in the park. It's a rule.
A.may not B.mustn't C.needn't D.can
12.Annie is good at singing. She ___ sing many English songs.
A.may B.can C.need D.must
13.—May I borrow your books
—Yes, you .
A.can B.should C.must
14.Helen _____ go on the trip with us, but she isn't quite sure yet.
A.shall B.must C.may D.can
15.—Must I get there at 6:30 in the morning
—No, you ____.
A.mustn't B.needn't C.can't D.don't
16.—I saw John in the park this morning.
—It__________ be him. He has gone to Hong Kong.
A.can't B.can C.mustn't D.must
17.—Must we hand in our homework today, Miss Chen
—__________. You may hand it in tomorrow morning.
A.Yes, you must B.Yes, you need
C.No, you needn't D.No, you mustn't
18.—Who will give us the speech on public manners
—Mr Brown , but I'm not sure.
A.can B.need C.might
19.—Must I stay here with you, Mum
—No, you__________. You may go home now, but you__________ go to the net-bar.
A.must; need B.need; must
C.needn't; mustn't D.mustn't; needn't
二、选词填空
1.We    wash our hands before
meals. It is good for our health. (must (not)/ may(not) /can(not))
2.Excuse me,    you tell me the
way to the nearest park (must (not)/ may(not) /can(not))
3.I    speak Chinese very well,
but I    speak Japanese at all. (must (not)/ may(not) /can(not))
4.We    take photos here. There
is a sign saying "No photos". (must (not)/ may(not) /can(not))
5.—Doctor,    I take much
medicine
—No, you needn't. (must (not)/ may(not)
/can(not))
6.—May I turn on the TV
—No, you   . My dad is sleeping.
(must (not)/ may(not) /can(not))
7.You    talk to your
grandparents like that. It's impolite. (must (not)/ may(not) /can(not))
三、句型转换
1.Tommy can swim. (改为否定句)
Tommy    swim.
2.Amy must finish her homework before 4:00 today. (改为否定句)
Amy      her homework before 4:00
today.
3.My foreign friend can speak Chinese. (改为一般疑问句)
       foreign friend     Chinese
四、翻译
1.我可以让那个年轻的男子进来吗?
    the young man come in
2.她必须为她的自行车找个适当的地方.
She     a right place     her bike.
3.“我可以打开电视吗?”“可以/不可以。”
—   I have the television on
—Yes, you   . /No, you   .
4.“我可以借用你的尺子吗?”“当然可以。但是你必须明天还给我。”
—   I borrow your ruler
—Of course. But you    return it
to me tomorrow.
参考答案
预习案
课前查阅
情绪;态度;语气;动词;not;人称和数的变化;动词原形;not
(一)
1)能力I can read this sentence in English.
2)请求和允许;may;语气更委婉;Can I borrow your ruler
3)推测、可能性;The road can be dangerous on rainy days.
(二)
1. 请求和允许;May I have a look at your driving licence
can't; mustn't,不可以,禁止
2.推测、可能性;might;I may go to the picnic, but I'm not sure.
(三)
1.必须、必要;We must keep quiet in the library.
2.主观看法;客观需要;有更多的时态形式
We must be there on time.(责任感的驱使)我们一.定准时到达。
I have to do my homework now.(不得不做)
needn't, don't have to
-Must I finish the report today
-No, you don.t have to/needn't.
推测、可能性
I saw Tom go in the direction of the library just now. He must be in
the library now.
探究案
探究点一:情态动词can的用法
can help; Can; draw; can't go skiing
请求和允许
推测、可能性
探究点二:情态动词may的用法
1)请求和允许
2)推测、可能性
探究点三:情态动词must的用法
1)必须、必要
2)主观看法;客观需要;needn't, don't have to
3)推测、可能性
训练案
一、单选题
1.【答案】B
【解析】句意:看,小吉姆游泳太快了。我不能相信我的眼睛。A shouldn't,不应该;B can't,不能;C mustn't,禁止;D needn't,不需要。根据句意可知用不能,故选B。
【点评】考查情态动词。注意常见情态动词的区别。
2.【答案】A
【解析】句意:——这工作对我来说太难了。我不能按时完成。——不要担心!我可以帮你。can't不能,表示能力;mustn't不能,表禁止; Don't worry 不要担心;All the way自始至终,一路上;根据The work is too hard for me. 可知工作太难,我不能完成,表示能力,第一个空用can't;根据I can help you. 我可以帮助你,可知是告诉对方不用担心,故答案为A。
【点评】考查情景交际。注意识记常用的日常用语。
3.【答案】A
【解析】句意:——我听说你有一部新手机,可以给我看看吗?——是的,当然。A可以,B做,C将,D应该, 根据Yes, certainly,可知此处表示客气的提问,故是may,故选A。
【点评】考查情态动词,注意识记may,shall和should的不同用法。
4.【答案】B
【解析】句意:——我可以在这里吸烟吗?——恐怕不能,这是无烟区。A能,B不能,C可以,D不可以,根据 I am afraid,可知是否定回答,may引导的一般疑问句,否定回答用情态动词can't,故选B。
【点评】考查情态动词,注意识记may引导的一般疑问句,否定回答用情态动词can't的用法。
5.【答案】C
【解析】句意:我们可以在咖啡馆吃饭。但是我们不能在教室里吃饭。can能,可以,助动词didn't后接动词原形,用于一般过去时,排除答案B,can't不能,aren't=are not,后面不能接动词原形,排除答案D,根据前面We can eat in the cafe. 我们可以在咖啡馆吃饭。句子中but但是,表示转折关系,由此可知,后面表示否定意义,“我们不能在教室里吃饭。”,故选C。
【点评】考查情态动词。注意理解句意,选择合适的情态动词。
6.【答案】C
【解析】句意:交通灯是红色时,你千万不要横过马路。can可以,能够,must必须,mustn't千万不要,表示禁止,不许可,needn't不必,情态动词后接动词原形,结合句意,交通灯是红色时,你千万不要横过马路。故选C。
【点评】考查情态动词。注意掌握情态动词can,must,mustn't,needn't的词义和用法。
7.【答案】C
【解析】句意:你能把书带到学校来吗?句子中bring带来,行为动词,不能直接和be动词连用,排除答案A和B;Please请,用于句首时,后面陈述句,排除答案D,结合句意,“你能把书带到学校来吗?”,故选C。
【点评】考查情态动词。注意识记are,is,can,please词义及用法。
8.【答案】D
【解析】句意:交通灯变红灯时你必须停车。can可以,能够,had better最好,后接动词原形,need需要,need to do sth.,需要做某事,排除答案C,must必须,表示义务、命令或必要,结合句意,故选D。
【点评】考查情态动词辨析。注意识记can,had better,need和must词义及掌握情态动词must表示必要、必须。
9.【答案】C
【解析】句意:许多学生来自贫困家庭,他们负担不起学校的午餐,所以政府正在努力帮助他们。needn't不必要,shouldn't不应该,can't不能,mustn't千万不要,表示禁止,不许可。这里指“他们负担不起学校的午餐”,afford负担,买得起,常用情态动词can连用,“负担不起”,can't afford,故选C。
【点评】考查情态动词辨析。注意识记needn't;shouldn't;can't;mustn't的不同用法。
10.【答案】D
【解析】句意:当我们不看电视的时候,我必须关掉它。情态动词must必须,后接动词原形,turned过去式,turns动词第三人称单数形式,turning现在分词形式,turn动词原形,故选D。
【点评】考查动词原形,注意掌握情态动词must,后接动词原形。
11.【答案】B
【解析】句意:所有人一定不能在公园里摘花。这是规定。A.可能不,B.一定不能,C.不需要,D.可以。根据 pick the flowers in the park.在公园里摘花 ,可知是一定不能,应用情态动词must的否定形式mustn't。表“一定不能”。故选B。
【点评】考查情态动词。注意掌握情态动词must的否定形式的用法。
12.【答案】B
【解析】句意:安妮擅长唱歌,她会唱很多英语歌。A.可以,也许,B.可以,C.需要,D.必须。根据 Annie is good at singing.安妮擅长唱歌 ,可知她会唱很多英语歌,应用情态动词can,表能力“可以/会”。故选B。
【点评】考查情态动词。注意掌握情态动词can的意思及用法。
13.【答案】C
【解析】句意:——我可以坐在这里吗?——不好意思,不行。A.需要,B.必须,C.可以,D.做。根据答语 Sorry, you can't.不好意思,不行 ,可知是询问可不可以坐在这里,应用情态动词may。故选C。
【点评】考查情态动词。注意may常用于询问是否可以做某事。
14.【答案】A
【解析】句意:——我可以用你的电话吗?——当然。给。A.可以,B.必须,C.需要,D.应该。根据 use your telephone用你的电话,可知是询问和请求,应用情态动词may。故选A。
【点评】考查情态动词。注意May常用于表询问和请求,语气比较委婉。
13.【答案】A
【解析】句意:——我可以借你的书吗?——是的,可以。由may所构成的一般疑问句,肯定回答用may或者can,故答案是A。
【点评】考查含有情态动词构成的一般疑问句的肯定回答,注意,要根据问答一致的原则确定答案。
14.【答案】C
【解析】句意:海伦可能和我们一起去旅行,但她还不太确定。shall,和we连用,表示将来)将要,将会;在疑问句中同I和we连用,表示提出或征求意见;(表示决心、命令或指示)必须,一定,应该。must(表示必要或很重要)必须;(表示很可能或符合逻辑)一定;(提出建议)应该;may(有可能但不肯定)也许,可能;(转折前所述情况属实)也许;(征求同意或表示允许)可以;canl,(表示有能力做或能够发生)能,会;(表示知道如何做)懂得;与动词feel,hear,see,smell,taste 连用;这里指“海伦可能和我们一起去旅行,但她还不太确定。”,故选C。
【点评】考查情态动词辨析。注意识记shall;must;may;can四个情态动词的词义及用法。
15.【答案】B
【解析】句意:——我必须在早上六点半到那里吗?——不,你不需要。A.一定不要,B.不需要,C.不行,D.不。根据 Must I get there at 6:30 in the morning 我必须在早上六点半到那里吗 ?和答语No不,可知是不需要,应用情态动词needn't。故选B。
【点评】考查情态动词的否定形式。注意用must询问,进行否定回答时应用情态动词needn't,表“不需要”。
16.【答案】A
【解析】句意:——今天早上我在公园里看到了约翰。——不可能是他。他去香港了。A can't,不可能,表否定的猜测;B can,可能,表肯定的猜测;C mustn't,禁止;D must,一定,表肯定的猜测。根据He has gone to Hong Kong. 可知不可能是约翰,故选A。
【点评】考查情态动词。注意can't表否定的猜测.
17.【答案】C
【解析】句意:—— 陈小姐,我们今天必须交作业吗?——不,你们不需要。你们可以在明天早上将其交上。以must提问的一般疑问句,肯定回答用must,否定回答用needn't或don't/doesn't have to,根据You may hand it in tomorrow morning. 可知是否定回答,故选C。
【点评】考查情态动词。注意以must提问的一般疑问句的肯定回答和否定回答。
18.【答案】C
【解析】句意:——谁来给我们做公共礼仪的演讲?——可能是布朗先生,但是我不确定。根据
but I'm not sure 可知,前面的句子时表示不太肯定的推测。can表示可定推测,可能性要大,might表示推测,可能性要小。need不能表示推测。故答案是C。
【点评】考查情态动词词义辨析,先根据语境确定空缺处的意思,最终确定答案。
19.【答案】C
【解析】句意:—— 妈妈,我必须和你在一起吗?——不,你不需要。你现在可以回家,但是你不能去网吧 。以must提问的一般疑问句,肯定回答用must,否定回答用needn't或don't/doesn't have to,因此第一个空填needn't;根据the net-bar可知父母禁止孩子去,因此用mustn't,禁止, 故选C。
【点评】考查情态动词。注意以must提问的一般疑问句,肯定回答用must,否定回答用needn't或don't/doesn't have to。
二、选词填空
1.【答案】must
【解析】句意:我们必须饭前洗手。这对我们的健康有益。must (not),必须(禁止);may(not),可以(不可以);can(not),能,会(不能,不会)。根据It is good for our health.可知饭前洗手是必须的,故答案为must 。
【点评】考查情态动词。注意识记must的用法 。
2.【答案】can
【解析】句意:打扰一下,你能告诉我去最近的公园的路吗?must (not),必须(禁止);may(not),可以(不可以);can(not),能,会(不能,不会),can还表示许可、请求 。根据...tell me the way to the nearest park可知是表示请求的,故答案为can 。
【点评】考查情态动词。注意can可以表示能,会,还表示许可、请求 。
3.【答案】can;can't
【解析】句意:我会说汉语说得很好,但是我根本不会说日语。must (not),必须(禁止);may(not),可以(不可以);can(not),能,会(不能,不会)。固定搭配not...at all,根本不,因此第二个空用否定;根据speak Chinese和speak Japanese可知这是一种能力,用can,因此第二个空用can't;根据but可知第一个空用肯定的can,故答案为can;can't 。
【点评】考查情态动词。注意can可以表示一种能力。
4.【答案】mustn't
【解析】句意:我们这里禁止拍照片。标语上面写着“禁止拍照”。must (not),必须(禁止);may(not),可以(不可以);can(not),能,会(不能,不会)。根据There is a sign saying "No photos". 可知禁止拍照 ,故答案为mustn't 。
【点评】考查情态动词。注意mustn't表示禁止。
5.【答案】must
【解析】句意:——医生,我必须吃很多药吗?——不,你不需要。 以must提问的一般疑问句,意为“……必须……吗”,肯定回答用must,否定回答用needn't或don't/doesn't have to。根据答语No, you needn't. 可知用must,故答案为must 。
【点评】考查情态动词。注意以must提问的一般疑问句,肯定回答用must,否定回答用needn't或don't/doesn't have to。
6.【答案】may not
【解析】句意:——我可以打开电视吗?——不,你不可以。我爸爸在睡觉。以may提问的一般疑问句,意为“……可以……吗”,肯定回答用may,否定回答用may not 。根据May I turn on the TV 和No可知用may not,故答案为may not 。
【点评】考查情态动词。注意以may提问的一般疑问句,意为“……可以……吗”,肯定回答用may,否定回答用may not 。
7.【答案】mustn't
【解析】句意:你禁止这样跟你的祖父母说话。这是不礼貌的。must (not),必须(禁止);may(not),可以(不可以);can(not),能,会(不能,不会)。根据It's impolite.可知禁止这样说话,故答案为mustn't 。
【点评】考查情态动词。注意识记mustn't的用法 。
三、句型转换
1.【答案】can't
【解析】句意:汤米会游泳。含有情态动词的肯定句变否定句在情态动词后加not,can not=can't。故答案为:can't。
【点评】此题考查肯定句变否定句。注意变否定句时在情态动词后加not,情态动词和not的缩写。
2.【答案】needn't;finish
【解析】句意:艾米必须在今天4:00点前完成作业。含有情态动词must的肯定句变否定句,must是必须的意思时,将must改为needn't,故答案为:needn't finish。
【点评】此题考查肯定句变否定句。注意情态动词的变化。
3.【答案】Can;your;speak
【解析】句意:我的外国朋友会说汉语。含有情态动词的一般疑问句把情态动词提前到主语前,一二人称相互转化,其他部分按照原先顺序照抄。can是情态动词,所以把can放句首,第一人称my需要改为第二人称your,故填Can,your,speak。
【点评】考查肯定句变一般疑问句,注意一般疑问句的结构及变化规则。
四、翻译
1.【答案】May I let
【解析】根据中英文对照可知此句缺少成分“我可以让……吗?”,我I,可以may,情态动词,后接动词原形,让某人进来let e in,故填May I let。
【点评】考查汉译英,注意识记let e in的词义和用法。
2.【答案】must find;for
【解析】根据中英文对照可知此句缺少成分“必须”,“为……找到”,必须must,情态动词,后接动词原形,找到find,固定搭配,find sth. for sb.为某人找某物,这里指“ 为她的自行车找个适当的地方 ”,故填must find;for。
【点评】考查汉译英,注意根据汉语提示匹配相应的英语以及根据语境确定其正确形式。
3.【答案】Can;can;can't
【解析】根据中英文对照可知,此处缺少成分“ 可以 ”和“ 不可以 ”,“ 可以 ”用情态动词can,句首,大写,以can开头的疑问句的肯定回答用can(可以),否定回答用can't(不可以),故填Can; can;can't 。
【点评】考查汉译英。注意以can开头的疑问句的肯定回答用can,否定回答用can't。
4.【答案】May/Can/Could;must
【解析】根据中英文对照可知,此处缺少成分“ 可以 ”和“ 必须 ”,“ 可以 ”用表示允许的情态动词may/can/could,句首,大写,“ 必须 ”用情态动词must,故填May/Can/Could;must 。
【点评】考查汉译英。注意表示允许的情态动词用may/can/could。
一、预习案
二、探究案
三、训练案
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Module 3 Unit 6 Electricity -Grammar教学设计
课题 Electricity 单元 Unit 6 学科 英语 年级 七年级
学习目标与核心素养 Knowledge objectives: 了解情态动词can, may, must的常见用法Skill objectives: 学会使用情态动词can, may, must来谈论电以及使用安全。3.Emotional objectives: 通过讨论情态动词can, may, must的常见用法,加强自主合作探究以及团队合作意识。
重点 讨论情态动词can, may, must的常见用法
难点 使用情态动词can, may, must来谈论电以及使用安全。
教学过程
教学环节 教师活动 学生活动 设计意图
导入新课 ①播放课件,让学生大声朗读以下句子,注意标红部分的文字。We can use electricity to do many things.The little girls can't cook with the cooker.May I use your new computer We must close the door of the fridge after using it.We mustn't touch the wires with wet hands.T:句中标红部分都放在在动词前,和动词一起构成谓语。②教师提问标红部分是什么?什么是情态动词?否定式是什么?③Read the sentences and underline the modal words.1. —— Can you get me a packet of electricity —— Yes, I can.2. She can't buy electricity in packets like sweets!3. You mustn't say that, Benny!4. —— Can you remember —— Yes, I can.5. We must leave the fridge on all the time. 大声读句子,观察并结合预习内容,说出自己的发现学生回答问题划出情态动词 联系实际,通过观察提高学生的发现、总结的能力,引出新知。通过简答的问题让学生大脑中初步构建出本节课的学习重点让学生识别出情态动词,在语境中感知意思
讲授新课 Step 1 学习Grammar A can and cannot1 让全班朗读教材第77 页例句框中的例句,加深对该语法点的了解2. Fill in the blanks based on the pictures.The children ________ their parents with housework._____ you _____ a picture with the computer I ______________ like Gu Ailing or Su Yiming, but I want to learn.Read and chooseFinish the exercise on P77Hi and Lo are talking about themselves. What are they saying Read their conversation and then complete the statements below with can or cannot.通过例句学习can在本单元以外的其他用法Step 2 学习Grammar B may and may notRead and sum朗读例句,引导学生发现规律尝试总结规律,完成导学案中探究点二部分的填写3.Read and choose4.Finish the exercise on P785. 5.通过例句学习may在本单元以外的其他用法Step 3 学习Grammar C must and must not1 让学生朗读教材第79页例句框中的例句,加深对该语法点的了解2. must的基本用法1)通过例句进一步感知用法2)通过例句感知①must与have to 的区别②在回答must引出的一般疑问句时,否定回答3.通过例句学习must在本单元以外的其他用法4.Read and choose5.Finish the exercise on P79Step 4 语法小结让学生观察PPT上的例句,总结规律1. 有无人称和数的变化2. 后面须接动词形式Step 5 Pairwork1 让全班朗读PPT上的对话,加深对该语法点的了解引导学生选择对应话题,利用情态动词,创编对话让学生分组展示Step 6 Groupwork1 明确活动要求,以小组为单位,一人利用情态动词发出指令,其他同学快速做出反应总结活动情况Step 7. Summary引导学生根据预习任务和本课学习做出总结定义:表示说话人的情绪、态度或语气的动词。特点:1. 无人称和数的变化 2. 后面须接动词原形一起作谓语 3. 否定式在其后加“not”can: 能may: 可以,可能must: 必须、必要Step 8 Exercises单项选择选词填空翻译句子Step 9 Groupwork引导学生利用情态动词讨论并描述用电规则Step 10 Homework1. 用你喜欢的方式总结本课情态动词的用法。 2. 完善“家庭/学校用电规则”。 阅读例句,发现规律句子填空并完成导学案探究点一的填写完成练习完成书中练习阅读例句,发现规律,完成探究点一部分的填写阅读例句,发现规律,并完成 探究点二部分完成练习完成书中练习阅读例句,发现规律,并完成 探究点二部分学生阅读例句框中的例句,发现规律,并完成探究点三部分阅读例句并发现规律完成填空练习完成书中练习阅读例句,发现并总结规律完成Work out the rule朗读句子,感知情态动词根据例子,完成对话表演对话并展示小组互动回顾所学内容完成练习小组深度互动 培养学生的总结归纳能力和探究合作的能力进一步感知can的用法培养学生对知识的综合运用能力培养学生提取重要信息的能力培养学生的总结归纳能力,提升知识运用能力培养学生的总结归纳能力和探究合作的能力及时巩固,感知may的功能培养学生的总结归纳能力进一步锻炼学生对语法知识的总结归纳能力和探究合作的能力培养对语法知识的总结归纳能力及时巩固,培养学生对语法知识的综合运用能力进一步锻炼学生对语法知识的总结归纳能力培养学生对语法知识的综合运用能力和探究合作的能力培养学生对语法知识的综合运用能力培养及时总结的好习惯培养学生对语法知识的综合运用能力和语言输出能力培养学生对语法知识的综合运用能力,为作业做准备培养学生对语法知识的综合运用能力和语言输出能力
板书 can 能力;请求和允许;推测和可能性may请求和允许;推测和可能性must必须、需要;主观(have to客观);推测、可能性Must ... No, ...don’t have to / needn’t.
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Unit 6 Electricity
Period 3-Grammar
深圳牛津版 七年级下
We can use electricity to do many things.
Lead in
Read and pay attention to the words in red.
The little girls cannot/can’t cook with the cooker.
Lead in
Read and pay attention to the words in red.
May I use your new computer
Lead in
Read and pay attention to the words in red.
We must close the door of the fridge after using it.
Lead in
Read and pay attention to the words in red.
Lead in
We mustn’t touch the wires with wet hands.
Read and pay attention to the words in red.
We can use electricity to do many things.
The little girls can’t cook with the cooker.
May I use your new computer
We must close the door of the fridge after using it.
We mustn’t touch the wires with wet hands.
Modal verbs (情态动词)
The words in red are _________________________.
Lead in
While-Learning
Modal verbs
(情态动词)
定义:
是一种本身有一定词义,表示说话人的情绪、态度或语气的动词。
情态动词否定式在其后加“not”。
1. —— Can you get me a packet of electricity
—— Yes, I can.
2. She can't buy electricity in packets like sweets!
3. You mustn't say that, Benny!
4. —— Can you remember
—— Yes, I can.
5. We must leave the fridge on all the time.
While-Learning
Read the sentences and underline the modal words.
While-Learning
What does “can” mean
We use the modal verbs can and cannot (can't) to say we are able or unable to do something.
We can use electricity to do many things.
We cannot/can't see electricity.
Can you think of an example
Yes, I can./No, I cannot/can't.
While-Learning
1. can
1) 表示能力(体力、知识、技能)。
Fill in the blanks based on the pictures.
eg.
The children ________ their parents with housework.
_____ you _____ a picture with the computer
I ______________ like Gu Ailing or Su Yiming, but I want to learn.
can help
Can
draw
can’t go skiing
While-Learning
Read and choose
1. My classmate is jumping so far! I ______ believe my eyes.
A. shouldn't B. needn't
C. mustn't D. can't
2. The cables ______ carry the electrictiy from the power station.
A. can B. can't
C. must D. mustn't
While-Learning
Hi and Lo are talking about themselves. What are they saying Read their conversation and then complete the statements below with can or cannot.
I can fly, dance, play chess and speak ten languages. I can't paint or drive a car.
I can swim, dance, play football
and speak two languages. I can't cook, play the guitar or ride a bicycle.
While-Learning
1. Hi ______ play football.
2. Lo ______ paint.
3. Hi ______ speak as many languages as Lo.
4. Both Hi and Lo ______ dance.
5. Lo ______ drive a car, but he ______ play chess.
6. Hi ______ swim, but he ______ play the guitar.
can
can
can
can
cannot
cannot
cannot
cannot
While-Learning
2) 表示______________。
eg. —— Can I play computer games
   —— Yes, you can. / No, you can’t.
 此时可与may互换。在疑问句中还可用could, might代替,不是过去式,只是语气更委婉,不能用于肯定句和答语中。
eg. —— Could I turn off the TV
   —— Yes, you can. ( No, I’m afraid not. )
请求和允许
While-Learning
Read and guess
3) can表示__________________(不用于疑问句)。
A broken wire can cause a fire.
推测、可能性
While-Learning
Read and sum
2. may
1) 表示______________。
eg. ①—— May I look at your new computer
   —— No, you mustn’t.
  ②—— May I make a cake with the cooker
   —— Yes, you can. (No, you can’t / mustn’t. )
否定回答时可用can’t或mustn’t,表示“不可以,禁止”。
用May I...?征徇对方许可时比较正式和客气,而用Can I...?在口语中更常见。
请求和允许
While-Learning
What does “may” mean
We use may and may not to ask for and give permission. In less formal situations, some people like to use can and cannot(can't) for the same purpose.
May/ Can I use your mobile phone
Yes, you may/ can.
No, you may not/ can't.
You may/ can turn on the TV.
You may not/ cannot play in the kitchen.
2.—___ I use your telephone
—Sure. Here you are.
A.May B.Must C.Need D.Should
1. —___ I sit here
—Sorry, you can't.
A.Need B.Must C.May D.Do
While-Learning
Read and choose
While-Learning
Daisy is not feeling well today. Benny is at home with her. Read their conversation below. Fill the blanks with may or can.
Benny: How are you feeling, Daisy
Daisy: Not very well.
Benny: ____ I get you a chair
Daisy: Yes, thanks.
Benny: I’m going out. ____ I borrow your bicycle, Daisy
Daisy: Yes, you may. Before you go to meet your friends,
can you come and see the doctor with me
May
May
While-Learning
Benny: Yes, I ____. ______ I carry your bag for you
Daisy: Yes, you may. That’s so kind of you, Benny.
I’m ready to go. ____ you open the door for me
Benny: Yes, I can.
Daisy: Thanks.
May
can
Can
2)may表示_______________(不用于疑问句)。
might是may的过去式,不表示过去的时间,只表示可能性比may小。
eg. He may/might be very busy now.
Your mother may/might not know the truth.
推测、可能性
While-Learning
What does “must” mean
We use must and must not/ mustn't to tell people what to do or what not to do.
You must not/ mustn't do that, Benny!
We must always be careful with electricity.
They must not/mustn't play near the heater.
While-Learning
While-Learning
3. must
1) 表示_______________________。
You must keep the wire from the children.
2) must与have to 的区别
eg. The power is off now. We must find out what’s wrong.
   I had to turn down the TV when my parents were reading.
must是说话人的_________,而have to则强调________。must只有一般现在时,have to 有更多的时态形式。
  
必须、必要
主观看法
客观需要
While-Learning
must
—— Must we turn off the fridge when we leave home
  —— Yes, you must.
—— No, you don’t have to / you needn’t. 
在回答must引出的一般疑问句时,如果是否定回答,不能用mustn’t(禁止,不准),而用_____________________(不必)。
 
3) must表示________________(只用于肯定的陈述句)。
eg. You’re good friends, so you must know each other’s hobby.
needn’t, don’t have to
推测、可能性
1. We ______ stop when the traffic lights turn red.
A. can B. may C. must
2. We ______ eat or speak loudly in the library.
A. must B. mustn't C. can D. needn't
3. My teacher _______ like tea. I see him drink tea many times.
A. must B. may C. can’t D. mustn’t
Read and choose
While-Learning
Let’s fill
Daisy saw a doctor. The doctor told her what to do and what do not do. Help her write down the doctor’s instructions.
I must drink more water.
______________________________
______________________________
I must go to bed early.
I must take the medicine on time.
4. I must not _____________________
5. ______________________________
6. ______________________________
eat cold food.
I must not go out alone.
I must not share cups with others.
drink more water go to bed early
eat cold food share cups with others
go out alone take the medicine on time
While-Learning
Work out the rule
After modal verbs such as can, may and must, we use (the base form/ the -ing form/ the -ed form) of a verb.

We can use electricity to do many things.
The little girls can’t cook with the cooker.
May I use your new computer
We must close the door of the fridge after using it.
We mustn’t touch the wires with wet hands.
情态动词特点:
1. 无人称和数的变化
2. 后面须接动词原形一起作谓语
We can use electricity to do many things.
The little girls can’t cook with the cooker.
We must close the door of the fridge after using it.
We mustn’t touch the wires with wet hands.
May I use your new computer
Summary
While-Learning
Pair work
Choose and talk with the modal verbs you’ve learnt.
If your computer doesn’t work, ...
If you don’t have enough battery, ...
If you can’t hear the sound of the TV, ...
S1: My computer doesn’t work. May I use yours
S2: Yes, you may/can, but you must return it to me before 6 pm. I must do my homework at 6:00.
Groupwork
Listen and do.
For example:
You must sit down!
You can’t touch your mouth!
You mustn’t play with your cellphone!
情态动词
定义:表示说话人的情绪、态度或语气的动词。
特点:1. 无人称和数的变化
2. 后面须接动词原形一起作谓语
3. 否定式在其后加“not”
can: 能
may: 可以,可能
must: 必须、必要
Summary
一、单项选择
1. Students in our school _____ know shouting is not allowed in the library.
A. shouldn't B. mustn't C. must
2. With the help of the new technology, you _______ e-mail your friends by mobile phone.
A. can B. must C. need
3. —I hear you've got a new washing machine. ___________ I have a look
—Yes, certainly.
A.May B.Do C.Shall D.Should
Exercises
Exercises
二、选词填空: can, can’t, may, may not, must, mustn’t
1. You needn’t return the book now. You ______ keep it until (直到) next week if you like.
2. ——_______ I put the battery here
——No, you may not.
can
May
3. I told her the news on the phone yesterday, so she _______ know it.
4. I’m afraid we _______ put so much food in the small fridge.
5. You _______ play with the knife. You _______ hurt yourself.
must
can't
mustn't
may
Exercises
三、翻译句子
1我们可以用电池来驱动这辆玩具车。
We can use some batteries to drive the toy car.
2我们无法看见电。
We cannot/can’t see electricity.
3你能看见冰箱旁边的电线吗?
Can you see the wire beside the fridge
4你不能把冰箱放在火附近。
You may not/cannot/mustn’t put the fridge near the fire.
Work out rules to use electricity at home/school.
Groupwork
Homework
1. 用你喜欢的方式总结本课情态动词的用法。
2. 完善“家庭/学校用电规则”。
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