外研版高中英语必修二 Part Ⅱ Using language——情态动词(2)
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(3)表示请求、允许(表请求时，口语中常用could代替can使语气更委婉，回答时用can)。 Can I go now？现在我可以走了吗？ —Could I come to see you tomorrow？——明天我可以来看你吗？ —Yes，you can.(否定答语可用No，I’m afraid not.)——是的，可以。 (4)表示惊异、怀疑、不相信的态度(主要用于否定句、疑问句或感叹句中)。 How can that be true？I can’t believe my eyes and ears. 怎么能是真的呢？我真不敢相信我的眼睛和耳朵。 How could you be so careless？你怎么会这么粗心？ (5)could have done表示“本来有可能做某事而事实上未做到”。 I could have come on time，but my car broke down on the way. 我本来可以按时到达，但是我的车在路上抛锚了。
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名师提醒 can和be able to都表示能力，意思上没多大区别。但can只有现在和过去时， 而be able to则有更多的形式。但当成功地完成某一具体动作时，通常不用could而用 was/were able to来表示。这时was/were able to 相当于managed to，表示经过一番努力， 终于能够完成某事。 Her mother can speak French. 他妈妈会讲法语。 The wounded man was still able to get to the village and was saved by the villagers in the end. 那个受伤的人仍然能够到达那个村庄，最后被村民们救了。
Unit 2 Let’s celebrate!
Part Ⅱ Using language——情态动词(2)
1
【思维导图】
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一、基本特征感悟
【感悟用法】
①—Something flying far away must be a hawk.——飞得很远的东西一定是鹰。 —No，it can’t be a hawk.——不，不可能是鹰。 ②A wise man might make a mistake sometimes.聪明人有时会犯错误。 ③Mary couldn’t have received my letter，otherwise she would have replied before now. 玛丽不可能收到我的信，否则她早就回信了。 ④May you continue in your efforts and achieve new and greater successes. 愿你们继续努力，取得新的更大的成就。 ⑤An Englishman who could not speak Italian was once traveling in Italy. 曾经，一位不会说意大利语的英国人在意大利旅行。
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【自我总结】 以 上 五 个 句 子 当 中 的 加 黑 部 分 都 是 ___情__态__动__词___ ， 其 后 所 接 的 动 词 是
___动__词__原__形___ 。 句 ① 中 must 表 示 现 在 情 况 的 _____肯__定_____ 推 测 ； can’t 表 示 ____否__定______推测；句②中might表示的可能性_____较__小_____；句③中表示对过去 情况的_____否__定_____推测；句④中may表示____祝__愿______；句⑤中could表示过去的 ___可__能__性_____。
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2.may和might的用法 (1)表示允许、请求，might比may的语气更委婉一些。 —May I watch TV now？——我现在可以看电视吗？ —Yes，you may.(Yes，please.)——是的，可以。 —No，you mustn’t.(No，you’d better not.)——不，你不能看。 (2)表示可能性时，might比may的可能性小，may表示的可能性比can小(主要用于陈述 句、肯定或否定句，疑问句用can代替)。 The story may not be true.这个故事可能不真。
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二、主要用法精讲 1.can/could的用法
(1)can/could“可能”，表示猜测，一般用于疑问句和否定句。 —Can the news be true？——这个消息可能是真的吗？ —It can’t be true.——它不可能是真的。 Someone is knocking at the door.Who could it be? 有人在敲门，他可能是谁呢？ (2)can可以表示理论上的可能性，指常有的行为或情形，意为“有时会……”。 Anybody can make mistakes.任何人有时都会犯错误。
4.Johnny，you ____m_u_s_tn_’_t_p_l_a_y_w_i_t_h_t_h_e_k_n_i_fe____，you ____m_a_y__h_u_rt_y_o_u_r_s_e_lf____. 约翰尼，你不能玩刀子，你会伤着自己的。
5.You ____m__ig_h_t__h_av_e__w_o_r_k_e_d_o_u_t____ this problem，though it was a little difficult. 你可能已经解决了这个问题，虽然它有点困难。
先生，我可以和经理谈谈吗？
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3.Man c_a_n__re_a_c_h_t_h_e_m__o_o_n or any other star in the universe now，but we _c_o_u_ld_n_’_t_g_e_t_th_e_r_e_ years ago. 人类现在可以到达月球或宇宙中的任何其他恒星，但多年前我们无法到达那里。
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表推测的情态动词用法小结 英语中有不少情态动词都可以表示推测，其语气有强有弱，表示的可能性有大有小， 情态动词表推测时，可能性由弱到强的排列顺序如下： might→may→could→can→should→would→must。
名师提醒 情态动词(may/might，can/could，must等)无人称和数的变化；不能单独使 用，必须与其后的动词原形构成谓语。
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名师提醒 can的特殊用法。 can but只好；can’t but不得不；can’t...too再……也不为过，越……越好 I can but wait.我只好等了。 I can’t but wait.我不得不等。 You can’t be too patient to the customers. 你对顾客再耐心也不过分。
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3.must的用法 ①表示“必须，应该，一定要”。强调主观看法，只有现在时形式，否定式是must not(mustn’t)。must开头的问句，其否定回答要用needn’t或don’t have to来表达。 We must do it now.我们现在必须做这件事。 —Must I hand in the paper today？——我必须今天交论文吗？ —Yes，you need/must.——是的，你必须(交)。 —No，you needn’t/don’t have to.——不，你不必(交)。 ②表示必然的结果。 All men must die.人皆有一死。 ③还可表示主语固执、偏要做他人不希望做的事。 Why must you always interrupt me？你为什么偏要打断我？
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(3)may/might have done表示“过去可能发生过某事”或“本来应该/可以做某事(实际 上没做)”。 You might have given him more help，but you were so busy. 你本来可以给他更多的帮助，但是，你太忙了。 (4)may/might as well最好还是……，不妨 You might as well do it now.你最好还是现在做吧。 (5)may/might well很可能 He may well be late for class.他很可能上课迟到。
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本节内容结束
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名师提醒 表示祝愿(不用might) May you succeed！祝你成功！ 即学即练 补全句子 1.______C_o_u_l_d_/C__an__y_o_u_t_e_ll_m__e____what’s happening over there?
你能告诉我那边发生了什么事吗？ 2._____M__a_y_I__h_a_v_e_a_w__o_rd_____ with the manager，sir?
(3)表示请求、允许(表请求时，口语中常用could代替can使语气更委婉，回答时用can)。 Can I go now？现在我可以走了吗？ —Could I come to see you tomorrow？——明天我可以来看你吗？ —Yes，you can.(否定答语可用No，I’m afraid not.)——是的，可以。 (4)表示惊异、怀疑、不相信的态度(主要用于否定句、疑问句或感叹句中)。 How can that be true？I can’t believe my eyes and ears. 怎么能是真的呢？我真不敢相信我的眼睛和耳朵。 How could you be so careless？你怎么会这么粗心？ (5)could have done表示“本来有可能做某事而事实上未做到”。 I could have come on time，but my car broke down on the way. 我本来可以按时到达，但是我的车在路上抛锚了。
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名师提醒 can和be able to都表示能力，意思上没多大区别。但can只有现在和过去时， 而be able to则有更多的形式。但当成功地完成某一具体动作时，通常不用could而用 was/were able to来表示。这时was/were able to 相当于managed to，表示经过一番努力， 终于能够完成某事。 Her mother can speak French. 他妈妈会讲法语。 The wounded man was still able to get to the village and was saved by the villagers in the end. 那个受伤的人仍然能够到达那个村庄，最后被村民们救了。
Unit 2 Let’s celebrate!
Part Ⅱ Using language——情态动词(2)
1
【思维导图】
2
一、基本特征感悟
【感悟用法】
①—Something flying far away must be a hawk.——飞得很远的东西一定是鹰。 —No，it can’t be a hawk.——不，不可能是鹰。 ②A wise man might make a mistake sometimes.聪明人有时会犯错误。 ③Mary couldn’t have received my letter，otherwise she would have replied before now. 玛丽不可能收到我的信，否则她早就回信了。 ④May you continue in your efforts and achieve new and greater successes. 愿你们继续努力，取得新的更大的成就。 ⑤An Englishman who could not speak Italian was once traveling in Italy. 曾经，一位不会说意大利语的英国人在意大利旅行。
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【自我总结】 以 上 五 个 句 子 当 中 的 加 黑 部 分 都 是 ___情__态__动__词___ ， 其 后 所 接 的 动 词 是
___动__词__原__形___ 。 句 ① 中 must 表 示 现 在 情 况 的 _____肯__定_____ 推 测 ； can’t 表 示 ____否__定______推测；句②中might表示的可能性_____较__小_____；句③中表示对过去 情况的_____否__定_____推测；句④中may表示____祝__愿______；句⑤中could表示过去的 ___可__能__性_____。
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2.may和might的用法 (1)表示允许、请求，might比may的语气更委婉一些。 —May I watch TV now？——我现在可以看电视吗？ —Yes，you may.(Yes，please.)——是的，可以。 —No，you mustn’t.(No，you’d better not.)——不，你不能看。 (2)表示可能性时，might比may的可能性小，may表示的可能性比can小(主要用于陈述 句、肯定或否定句，疑问句用can代替)。 The story may not be true.这个故事可能不真。
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二、主要用法精讲 1.can/could的用法
(1)can/could“可能”，表示猜测，一般用于疑问句和否定句。 —Can the news be true？——这个消息可能是真的吗？ —It can’t be true.——它不可能是真的。 Someone is knocking at the door.Who could it be? 有人在敲门，他可能是谁呢？ (2)can可以表示理论上的可能性，指常有的行为或情形，意为“有时会……”。 Anybody can make mistakes.任何人有时都会犯错误。
4.Johnny，you ____m_u_s_tn_’_t_p_l_a_y_w_i_t_h_t_h_e_k_n_i_fe____，you ____m_a_y__h_u_rt_y_o_u_r_s_e_lf____. 约翰尼，你不能玩刀子，你会伤着自己的。
5.You ____m__ig_h_t__h_av_e__w_o_r_k_e_d_o_u_t____ this problem，though it was a little difficult. 你可能已经解决了这个问题，虽然它有点困难。
先生，我可以和经理谈谈吗？
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3.Man c_a_n__re_a_c_h_t_h_e_m__o_o_n or any other star in the universe now，but we _c_o_u_ld_n_’_t_g_e_t_th_e_r_e_ years ago. 人类现在可以到达月球或宇宙中的任何其他恒星，但多年前我们无法到达那里。
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表推测的情态动词用法小结 英语中有不少情态动词都可以表示推测，其语气有强有弱，表示的可能性有大有小， 情态动词表推测时，可能性由弱到强的排列顺序如下： might→may→could→can→should→would→must。
名师提醒 情态动词(may/might，can/could，must等)无人称和数的变化；不能单独使 用，必须与其后的动词原形构成谓语。
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名师提醒 can的特殊用法。 can but只好；can’t but不得不；can’t...too再……也不为过，越……越好 I can but wait.我只好等了。 I can’t but wait.我不得不等。 You can’t be too patient to the customers. 你对顾客再耐心也不过分。
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3.must的用法 ①表示“必须，应该，一定要”。强调主观看法，只有现在时形式，否定式是must not(mustn’t)。must开头的问句，其否定回答要用needn’t或don’t have to来表达。 We must do it now.我们现在必须做这件事。 —Must I hand in the paper today？——我必须今天交论文吗？ —Yes，you need/must.——是的，你必须(交)。 —No，you needn’t/don’t have to.——不，你不必(交)。 ②表示必然的结果。 All men must die.人皆有一死。 ③还可表示主语固执、偏要做他人不希望做的事。 Why must you always interrupt me？你为什么偏要打断我？
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(3)may/might have done表示“过去可能发生过某事”或“本来应该/可以做某事(实际 上没做)”。 You might have given him more help，but you were so busy. 你本来可以给他更多的帮助，但是，你太忙了。 (4)may/might as well最好还是……，不妨 You might as well do it now.你最好还是现在做吧。 (5)may/might well很可能 He may well be late for class.他很可能上课迟到。
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本节内容结束
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名师提醒 表示祝愿(不用might) May you succeed！祝你成功！ 即学即练 补全句子 1.______C_o_u_l_d_/C__an__y_o_u_t_e_ll_m__e____what’s happening over there?
你能告诉我那边发生了什么事吗？ 2._____M__a_y_I__h_a_v_e_a_w__o_rd_____ with the manager，sir?
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外研版高中英语选择性必修第2册 Unit 2 Section B Using language
provide better conditions for their children. 我认为父母为了给孩子提供更好的条件而放弃工作是不合适的。
【词汇拓展】 be appropriate to/for 适用于;合乎 be appropriate to do sth. 做某事是合适的
be appropriate that sb.(should) do 某人做……是合适的
【词汇拓展】
figure out
查出,弄清楚
break out 爆发
make out 理解,弄清楚
let out 泄露,放出
come out 出版,出来,开花
find out 查出,查明try out
试用,试验
leave out 省略,删掉
give out散发,分发,用完
I don’t figure out what you’re trying to say. 我不明白你想说什么。
I have worked out your share of the expenses is $10. 我已计算出你应分摊的费用是10美元。 Mr.White keeps fit by working out for half an hour every morning. 怀特先生每天早晨锻炼半个小时以保持身体健康。
It is appropriate that...……是合适的 appropriately adv. 适当地;合适地
It will not be appropriate for me to discuss that now. 我现在讨论那件事是不合适的。 It is necessary and appropriate that we (should) enjoy nature and taste life. 我们都应该享受自然,品味生活,这是必要的,也是恰当的。
【词汇拓展】 be appropriate to/for 适用于;合乎 be appropriate to do sth. 做某事是合适的
be appropriate that sb.(should) do 某人做……是合适的
【词汇拓展】
figure out
查出,弄清楚
break out 爆发
make out 理解,弄清楚
let out 泄露,放出
come out 出版,出来,开花
find out 查出,查明try out
试用,试验
leave out 省略,删掉
give out散发,分发,用完
I don’t figure out what you’re trying to say. 我不明白你想说什么。
I have worked out your share of the expenses is $10. 我已计算出你应分摊的费用是10美元。 Mr.White keeps fit by working out for half an hour every morning. 怀特先生每天早晨锻炼半个小时以保持身体健康。
It is appropriate that...……是合适的 appropriately adv. 适当地;合适地
It will not be appropriate for me to discuss that now. 我现在讨论那件事是不合适的。 It is necessary and appropriate that we (should) enjoy nature and taste life. 我们都应该享受自然,品味生活,这是必要的,也是恰当的。
外研版必修二Unit 2 Let's celebrate!Using language 教学设计
B2U2 Using languageHello, everybody. I am very glad to have this lesson with you. Today, we are going to learn some modal verbs and the expressions to describe the Lantern Festival celebrations.Are you ready for the class? Now let’s begin!► Modals indicating possibility, and Lantern Festival celebrations.Step 1: Analysis of the material► 语法部分通过提供化妆舞会和“黑色星期五”两个语境的相关练习，引导同学们了解情态动词表示推测的基本用法，使同学们能够在真实语境中正确、恰当使用情态动词。
词汇部分以元宵节庆祝活动的思维导图的形式，归纳、总结了节日期间各种庆祝活动的相关表达，帮助同学们学会如何描述节日。
Step 2: Leading-in► First of all, let’s look at some jokes, and see whether you can get the laughing point.Joke 1: A: You should pay your taxes with a smile.B: I tried that but they wanted cash.► Joke 2:A: You mustn’t pull the cat’s tail.B: I’m only holding it. It’s the cat that is pulling.► Joke 3: A: Did you know that every four seconds a woman gives birth to a child?B: That’s terrible. We must find this woman and stop it.► Joke 4: A: Dad, I can help you save some money.B: Really! How can you do that?A: Do you remember saying you’d give me 10 pounds for passing my exams?B: Yes.A: Well, you don’t have to pay me now.Don’t you find the jokes funny?1► Have you noticed that they have something in common?Yes, the underlined words are all ► modal verbs, or say modals, 情态动词。
【新高考新课件】(外研版)选择性必修二 Unit 2Using language
Using language
过去完成时的被动语态
① 句式结构
肯定式：主语＋had been done. 否定式：主语＋had not been done. 一般疑问式：Had＋主语＋been done?
② 用法 ▶表示在过去某一时间或动作之前已经发生或完成的被动动作，常与by，before，when，until， by the time等引导的时间状语从句连用。 ·A new agreement had been signed by the time we got there. 等我们到那儿的时候，一项新协议已经签署。 ·The house had been picked up by the hurricane before they took measures. 在他们采取措施之前，房子已经被飓风卷走了。
The author, John Perry, said that procrastination was about 6 avoiding (avoid) the hardest and most important
tasks. So, 7 to make (make) sure you do your homework, put it second or third on your to-do list, not at the
Activity 1. Now look for more sentences with the past perfect passive in the reading passage, and summarise its use in your own words.
Sentences with the past perfect passive: 1 They had been promised money by family and friends for each day spent without using
2019新外研版高二英语选择性必修二Unit2语法课件 Using language
Answer: 1
Activity 8
Listen again and complete the newspaper report.
1 honesty 2 present to oversee the students 3 sign a letter of commitment 4 trusted 5 the relaxed atmosphere 6 greater self-control 7 honesty umbrella 8 honesty and other values 9 in one piece 10 another branch of the school
新标准《英语》高中选择性必修第二册
Unit 2 Improving yourself Using language
Past perfect passive
Activity 1
Activity 1
• 1 The students were persuaded before the detox started. • 2 They differ in voice. The passive voice is used in sentence (a), while the active
Activity 3
Jack started the habit of cleaning his room last week. This is what his room looked like yesterday morning. (The floor was clean. The sheet was laid flat on the bed. All the books and clothes were placed neatly and tidily. The pictures on the wall were straight.) But two weeks ago, Jack’s room had been an awful mess. His clothes had been thrown everywhere; the pictures had not been hung straight; and all the drawers had been opened. It had been a very disorderly sort of room, with books and papers lying around everywhere.
高中英语外研版必修二Unit2Let's celebrate! Using language
[归纳探究] decorate...with... 用……装饰…… be decorated with... 装饰着…… be decorated with banners and flowers 装饰着横幅和鲜花 be decorated in the traditional style 按照传统风格装饰
rain soon. ③There is a great deal of evidence ___i_n_di_c_at_in_g___ (indicate) that music
activities engage different parts of the brain.
2.request n. & v．请求，要求 ❶They made a request for more time.他们要求更多时间。 ❷He got there at the request of his manager.他应经理的要求到了那里。 ❸You are requested not to smoke in the library.请你不要在图书馆里 吸烟。
[即学即练] 单句语法填空 ①We're going to have a _c_o_m_p_e_ti_ti_o_n_ (compete) to see who can swim the
farthest. ②There is now fierce __co_m__pe_t_it_io_n_ (compete) between schools to attract
[单词积累] compete v．竞争，参加比赛 competitor n．比赛者 competitive adj.竞争的，比赛的 [一言助记]
In the Olympic Games, they competed in the 800metre race with
Unit2Usinglanguage课件-2020年秋高中英语外研版（2019）选择性必修二
• But on reflection, I can see how much of my time had been occupied with checking my phone.
Step 3: Knowledge learning
过去完成时的被动语态
过去完成时的被动语态 = 过去完成时+被动语态 (had been done) 表示在过去某一时间或某个动作之前已经完成的动作。
a 1. Do not litter.
b 2. Do not talk loudly in public.
e 3. Do not spit in public.
a
b
c
f 4. Do not walk on the grass.
c 5. Do not smoke. d 6. Do not take photos.
• Draw a timeline to help you decide what tense and form you should use.
重新开始
上交
had been met
故意地
推迟
doing
弄懂
had been cleaned
had been put
had been left
拖延
avoiding
had been done did
now
下面两种情况一般用过去完成时的被动语态： ① 强调动作的承受者：
e.g. The pen had been broken by the boy before it was found. ② 不知道谁是动作的执行者，或者没有必要指出谁是动作的
执行者： e.g. The task had been completed before noon yesterday.
Step 3: Knowledge learning
过去完成时的被动语态
过去完成时的被动语态 = 过去完成时+被动语态 (had been done) 表示在过去某一时间或某个动作之前已经完成的动作。
a 1. Do not litter.
b 2. Do not talk loudly in public.
e 3. Do not spit in public.
a
b
c
f 4. Do not walk on the grass.
c 5. Do not smoke. d 6. Do not take photos.
• Draw a timeline to help you decide what tense and form you should use.
重新开始
上交
had been met
故意地
推迟
doing
弄懂
had been cleaned
had been put
had been left
拖延
avoiding
had been done did
now
下面两种情况一般用过去完成时的被动语态： ① 强调动作的承受者：
e.g. The pen had been broken by the boy before it was found. ② 不知道谁是动作的执行者，或者没有必要指出谁是动作的
执行者： e.g. The task had been completed before noon yesterday.
(2020新教材)外研版英语必修第二册同步练习Unit 1 Period Ⅱ
Period ⅡUsing language——Grammar &VocabularyGrammar(情态动词一)课前自主预习[观察句子，总结规律]① ... I was_able_to hold a knife and fork—and chopsticks!②But there are still some dishes that Dad dare not try even after many years of marriage to my mother.③Mum and I just have_to find a way to get him into the kitchen!④... we'd_better not eat too much roast food as it may make us suffer from heat inside our bodies, ...⑤You needn't try it if you don't want to, Mum said, ...[我的发现]以上五个句子都使用了情态动词。
(1)①句中的be able to意为“________”。
(2)②句中的dare意为“________”。
(3)③句中的have to意为“________”。
(4)④句中的'd better为________的缩写，意为“________”。
(5)⑤句中的need意为“________”。
答案：(1)能够(2)胆敢，敢于(3)不得不(4)had better；最好(5)需要精讲课时语法一、be able to的用法be able to意为“能够，有能力”，不仅有时态、人称和数的变化，而且还可以与某些系动词或情态动词连用(通常不与can 连用)，甚至还可以有非谓语形式。
He hasn't_been_able_to get in touch with her.他一直未能和她联系上。
高中教育英语必修第二册外研版《3.2 Using language》教学课件
[归纳探究] involve doing sth. 包含做某事 involve sb./one's doing sth. 需要某人做某事 involve sb. in (doing) sth. 使某人参与(做)某事 be involved with 与……关系密切/专心于 be/become/get involved in 参与
[熟词生义] The job involves me travelling all over the country. 这份工作需要我在全国各地跑。(vt.需要)
[名师指津] involved的位置决定意思 involved作前置定语时，意为“复杂的”，作后置定语时，意为“涉及 的”。 His new story has the involved plot.(前置定语) 他新写的这本小说有复杂的情节。
We'll make our decision and contact the people involved．(后置定语) 我们将做出决定，然后与有关人员联系。
[即学即练] 单句语法填空 ①The test will involve _an_s_w_er_in_g __ (answer) questions about history. ②The job involves my _tr_av_e_lli_ng___ (travel) all over the country． ③Parents should involve themselves ____in____ their children's education.
__a_ga_in_st___ the disadvantages.
4.involve v．包含，需要；牵涉；(使)参加 ❶Painting the room involved moving out the piano. 粉刷房间需要把钢琴搬出去。 ❷I seem to have involved myself in something I don't understand. 我似乎卷入了一件我并不知情的事情当中。 ❸No matter what you like to do, there is a way to get involved in
新外研版(2019)选择性必修二unit2 using language
Some useful hints:
3. sign a letter of commitment Before taking the examination, students first need to sign a letter of commitment, promising to abide by the rules.
75. in turn
76. for instance = for example
77. to put it another way = in other words
Part3 Listening P19
Activity7 Listen to the interview and choose a topic for it.
__h_a_d_b_e_e_n__p_la_n_t_e_d___ (plant) in that village. 2．His village _h_a_d_b_e_e_n_f_l_o_o_d_ed__ (flood) in the
heavy rain, so he moved to his parents' house. 3．He found that his wallet _h_a_d_b_e_e_n__st_o_l_en_ (steal) on the bus. 4．It was the second time that Tom
4
Listening materials:
5
Listening materials:
6
b At the start of the detox, people had persuaded over 100 students to stop using social media for seven days
外研社高中英语必修第二册Unit 2 Using langrage 课件(1)
①What do the words in blue indicate: an order, a request, ability or possibility?
Activity 1 s from the reading passage and answer the questions.
③What happens if we change “must”and “might” in sentence (b) and (c) into “could”?
If we change"must" in sentence (b) into “could", it means the speaker is not sure about the statement, and it's only a possibility. If we change "might" in sentence (c) into "could", it means it's impossible for the children to receive their presents.
Activity 1 Revision
Look at the sentences from the reading passage and answer the questions.
a That is why Letter from Father Christmas could be the perfect book… b The children must have been very excited as they opened it. c … they might not receive their presents if they were not good.
Activity 1 s from the reading passage and answer the questions.
③What happens if we change “must”and “might” in sentence (b) and (c) into “could”?
If we change"must" in sentence (b) into “could", it means the speaker is not sure about the statement, and it's only a possibility. If we change "might" in sentence (c) into "could", it means it's impossible for the children to receive their presents.
Activity 1 Revision
Look at the sentences from the reading passage and answer the questions.
a That is why Letter from Father Christmas could be the perfect book… b The children must have been very excited as they opened it. c … they might not receive their presents if they were not good.