Grammar and usage(1): Modal verbs: general introduction优质课教案推荐

高一年级牛津英语模块4第二单元语法教案

M4U2 Grammar Modal Verbs (I) Teaching Aims:| At the end of this class, students will be able to: 1.

study the usage of “can/could/be able to” , and “may/might”.

2.

conclude the differences between them. 3.

finish the exercises related to them. Teaching Important Points: 1.To tell the difference between “can/could/be able to”

2.To tell the difference between “may/might/can/could”

Teaching Difficult Points: 1．To tell the difference between “may/might/can/could”

Teaching Procedure: Step 1 can/could/be able to 1. Read the sentences below and conclude the usages of “can/could/be able to” with your group.

I don't think he can solve the problem without your help. Rose could cook meals for herself two years ago. He is able to swim across the river. He will be able to swim across the river. He was able to swim across the river before the ship sank. 设计说明:通过例句感知让学生通过小组讨论的方式归纳总结，培养学生通过观察事物的概括能力。

2.Practice: He managed to get the radio repaired without any help. =He _____________ get/__________getting the radio repaired without any help. 设计说明：通过练习巩固所学知识，也培养了学生的转换能力。

Step 2 can与could表示推断用法

1.

Fill in the blanks ____it be true? It

_________

not be true. It __________be true. It________ be as hot as 38 degree in my home town in summer. 设计说明：先让学生自己填，给学生犯错的机会，教师指正，增加学生的印象。

2.

Conclusion 1)could可能性比can小，都表示推断，表示可能，否定为can’t或couldn’t，意为“不可能。”

2)can表示可能只能用在疑问句和否定句中，而could可以用在所有句子中

高一年级牛津英语模块4第二单元语法教案

3) can用于肯定句中表示理论上的可能性，意为“有时候会”。

4)对于过去的推测，要在情态动词后面加have done,即could have done;对于现在正在进行的推测后面加

be doing,即could be doing 设计说明：此部分在学生归纳的基础上，教师予以补充，让学生更加全面的了解其用法。

Step 3

can与could表示请求、许可的用法

1.can与could表示请求、许可的用法

could 比can更委婉.；

在以could、can 表示征询对方意见或表示请求时，回答应相应使用can.，此种用法与may/might用法相同。

设计说明：因为这种用法比较简单，所以教师直接呈现，节约了时间。

2.Practice 1. — Could I borrow your dictionary?

— Yes, of course you _______.

A. might

B. will

C. can

D. should 2.

— Might I watch TV after supper?

— Yes, you ________.

A. may

B. must

C. might

D. can 设计说明：学以致用，巩固学生所学知识。

Step 4拓展：can的固定用法

①

can not/can never...too...或cannot...enough “无论怎么……也不过分；越……越好；非常……”。

Translation:1)One cannot be too careful. 2) I cannot thank you enough. ②cannot help doing...情不自禁做

cannot help but do.../cannot but do..不得不做…

Translation:1)I cannot help admiring the picture whenever I look at it. 2)When a close friend dies，you cannot but feel sad. 设计说明：此部分是重要的考点，学生经常翻译错，所以采用翻译方法让学生掌握。

Step 5

may与might表示可能性

1. Read the sentences below and conclude the usages of “may” and “might” . It may rain tomorrow.

They may not be there today.

Rose might have returned home, but I’m not sure.

设计说明：此部分还是采用例句让学生感知，再通过几个问题让学生思考有针对性，培养学生独立思考的能力和归纳总结能力。

2.Conclusion: 1)might可能性比may小，may的可能性要比could小，所以要记住几个可能性动词的可能性大小

might

2)might/may 陈述句中（肯定句和否定句）

高一年级牛津英语模块4第二单元语法教案

can 疑问句和否定句

could 用在所有句子中

must只能用在陈述句中的肯定句，表示一定。

3) might/may not翻译为可能不

can/could not翻译为不可能

must not 翻译为禁止做

4)情态动词对于过去的推测在后面加have done, 即might/may have done; 对于正在进行的推测may/might be doing. 设计说明：此部分是本节课的重点也是高考的重要考点和易错点，所以在学生归纳的基础上教师归纳得更加详细，并给予一些时间让学生记忆。

Step 6 Practice

1.— When can I come for the photos? I need them tomorrow afternoon.

—They______be ready by 12:00.

A.

can

B. should

C. might

D. need 2.It is usually warm in my hometown in March, but it _____ be rather cold sometimes. A. must

B. can

C. should

D. would …（见PPT）

设计说明：本部分是最重要部分，所以通过练习方式检查学生掌握情况。

Step 7 may与might表示请求、许可的用法

1. might 比may更委婉.;在以might、may 表示征询对方意见或表示请求时，回答应相应使用may, 此种用法与could/can用法相同. 2. Review 1)--- Might I watch TV after supper?

---Yes, you ________.

A. may

B. must

C. might

D. could 2)(2010·四川卷)—________I take the book out?

—I’m afraid not.

A．Will

B．May

C．Must

D．Need 设计说明：此种用法在之前已经提到，所以通过练习方式进行回顾。

Step 8 may、might特殊用法

1、may/might as well do sth. “还是做某事的好；不妨去做某事”

Translation：

Since we’ve got nothing better to do，we might as well go for a walk. 2、表示祝愿

Translation：

May our friendship live long!

May you succeed! May you have a good time!

May you be happy! 设计说明：通过翻译方式让学生掌握其特殊用法。

高一年级牛津英语模块4第二单元语法教案

Step 9 Summary 1、can、could、be able to表示能力区别

2、can、could、might、may、must、should、will表示可能性大小的区别以及所使用的条件以及否定的翻译方法

3、can、may/might特殊用法

4、can/could、may/might表示许可的用法。

设计说明：本节课已学习内容较多，此部分让学生回顾本节课内容，让学生思路清晰，培养学生边学习边归纳边复习的能力。

Step 10 More Practice 1. --Will you stay for lunch?

--Sorry, _____. My brother is coming to see me. A. I mustn’t

B. I can’t

C. I needn’t

D. I won’t

……（见PPT）

设计说明：此部分是高考易错点的练习，巩固学生易错点。

Homework: 1、Review what we have learned. 2、Preview the usages of “shall”, “should”, “have to”, “must”, “need” , “dare”, “will” and “would”

设计说明：本节课学的内容比较多，学生遗忘速度较快，所以让学生课后记忆，下节课通过提问的方式让学生回顾所学知识，正好为下节课情态动词的第二部分做准备，预习其他其他情态动词用法也可以让学生辨别不同情态动词的用法。