人教版九年级全册英语 Unit8 It must belong to carla. SectionA Grammar focus 4a-4c 教案

Unit8 It must belong to Carla
Section A(Grammar Focus－4c)教学设计
一、教学目标：
1. 语言知识目标：
1) 学习掌握下列词汇：laboratory, coat, sleepy, pocket 及重点句式：
What did you see that night
I think it might be a bear or a wolf.
She was thinking of taking a shower.
2）进行一步复习巩固学习Section A 部分所学的生词和词组。
3）掌握情态动词的用法和物体所属的句型。
2. 情感态度价值观目标：
面对身边暂时不可解释的现象，根据已有证据进行合理推测。不信谣，不传谣。
二、教学重难点
1. 教学重点：
1) 复习巩固Section A 部分所学的生词和词组，达到熟练运用的目标。
2) 总结情态动词的用法。
2. 教学难点：
1) 学习运用情态动词的用法。
2) 掌握物体所属的句型。
三、教学过程
Ⅰ. Revision.
Review some main phrases we learned in the last class.
ⅡLead-in -- Look and guess.
There are four pictures in the PPT, ask students to guess who is she/he or whom it belongs to.
（设计意图：提供四张图片，通过学生们熟悉的人物引导学生关注，逐步揭开图片的真实容，让学生在猜测内容和人物的同时运用到情态动词，引出情态动词的用法。）
Ⅲ Fill in the blanks.
1. 这是谁的排球
_________ __________ is this
这一定是卡拉的。她热爱排球运动。
It _________ be ______. She loves volleyball.
2. 这是谁的发带？
_________ _________ is this
它可能是梅的发带。或者可能属于琳达。她们两人都是长头发。
It _____ be Mei’s hair band. Or it ______ belong to Linda. They___ have long hair.
3. 那晚你看见了什么？
______ did you see that night
我不确定，但肯定不可能是狗。它更大。我想也许是一头熊或一匹狼。
I'm ____ _____, but it ____ _____a dog.
It was bigger. I think it ____ _____ a bear or a wolf.
Ⅳ Try to Find
情态动词表推测，可能性：must> can/could> may/might
一、must
表示可能性最大的肯定推测，意思是“一定、准是”。只能用于肯定句。如果要表示“一定不”，应该用can't。如果询问可能性时，应该用can。
e.g. He must know the answers. 他肯定知道答案。
He can't know the answers. 他肯定不知道答案
Can he know the answer 他知道答案吗？
二、can/could
can表示推测“可能性”时，一般用于否定句或疑问句。can在疑问句中意思是“会，可能”。
could可用于表示客气、礼貌、委婉的请求语气。
e.g. He can’ t pick her schoolbag up.
他不可能拿了她的书包。
could 用于表示某事有可能发生或可能是事实。
3、may/might
may, might表示推测“可能性”时，意思是“可能”，“也许”。might不表示过去时态，语气更委婉，可能性更小。may, might表推测时，可用于否定句，但不用于疑问句。
e.g. He may/ might not be at home, but
I’m not sure.
他可能不在家，不过我也不确定。
（设计意图：详细讲述情态动词表可能的用法，通过大于号把它们的可能性大小进行相连，学生理解起来更直观更容易；并在讲解每个动词的同事配有相应的例句，帮助学生理解它的使用语境。）
Ⅴ Exercises
Choose the correct answer.
1. — Excuse me. Is this the right way to the Summer Palace
— Sorry, I am not sure. It ________ be.
A. might B. will C. must D. can
2. — Isn’t that Ann’s husband over there
— No, it ____ be him—I’m sure he doesn’t wear glasses.
A. can’t B. must not C. won’t D. may not
3. You ______ be tired—you’ve only been working for an hour.
A. must not B. won’t C. can’t D. may not
4. — Is John coming by train
—He should, but he ________ not. He likes driving his car.
A. must B. can C. need D. may
（设计意图：进一步巩固学生对情态动词表可能用法的理解，通过常考题型进行训练，感受这部分内容在考试中的体现方式。）
Ⅵ. Practice
Work on 4a. Choose the best way to complete each sentence using the words in brackets.
1. 让学生们理解句子意思。
1. A: Where’s Jean
B: I’m not sure. She ______ (is/ might be/ must be) in the laboratory.
2. A: Everyone is going to the pool after school.
B: Really It _______ (must be / can’t be /could be ) hot outdoors.
3. A: That’s the phone.
B: Hmm. I wonder who it _______ (must be / could be / should be).
4. A: I wonder if there are Jim’s glasses.
B: They _______ (can’t be / might be / could be) his. He doesn’t wear glasses.
5. A: I hear water running in the bathroom.
B: It _______ (could be / must be / can’t be) Carla. She was thinking of taking a shower.
（设计意图：学生独立完成练习，教师引导学生关注推断依据，同时注意了解学生个体学习情况，并可视学情进行进一步拓展，利用五个小题中的首句，引导学生运用情态动词进行各种合理推断，巩固、落实情态动词表推测的不同用法。）
2. 根据句意选择正确的情态动词。
3. Check the answers with the Ss.
Keys: might be, must be, could be, can’t be, must be
Work on plete these responses.
1. Tell Ss to understand the sentences.
1. A: Many people are wearing coats.
B: The weather must be ____.
2. A: Sally has been coughing a lot.
B: She might be _______.
3. A: This restaurant is always very crowded.
B: The food ________________.
4. A: Whenever I try to read this book,
I feel sleepy.
B: It can’t _____________________.
2. Let Ss write down possible answers as much as possible.
3. Let Ss check their answers with their partners.
4. Check the answers together.
Keys: cold, sick/ ill, must be delicious, be interesting/ attractive
Ⅶ Group Work
Look at this picture of a room. How much can you tell about the person who lives here Is it a boy or a girl What are his/ her hobbies Discuss your ideas with a partner.
A：It could be a girl's room because it's very tidy.
B：I guess so. But it might be a boy's room because the clothes look like boys' clothes.
A：It could/ might/ can't be... because...
B：I guess so/ I don’t think so. But it might/ could/ must be ... because ...
（设计意图：学生以小组为单位就房间主人的性别进行讨论，教师要求每个学生的每个推断后都有适当的推测依据，期间，教师可以在黑板上书写以下句子作为引导：It could be a girl’s room because…/ It could be a boy’s room because…根据依据学生分组编对话在全班展示，教师同时给其他学生设计一些任务，促进人人关注，人人参与。）
Ⅷ Summary
1 Make inferences with Modal Verbs.
2 The usage of “must”, “might”, “could” and “can’t”.
板书设计：
Unit8 It must belong to Carla
Section A(Grammar Focus－4c)
情态动词表推测 可能性: must> can/could > may/ might
否定：can not ( can’t) could not (couldn’t) may not / might not
It could be a girl’s room because…/ It could be a boy’s room because…