高一英语必修三unit1语法教案

Grammar

Teaching Goals: 1. To check what has been learned yesterday.

2. To enable Ss to master some new words and expressions.

3. To get Ss to have knowledge of the grammar point: the model verb Teaching Procedures:

Step 1. Revision

1. Ask Some Ss to retell the reading text.

2. Ask Ss to answer the following question to see whether they did their homework or not.

How many festivals are mentioned in our text?

Step 2. Word study

Purpose: To consolidate the words and phrases in the text.

Finish Ex1

Purpose: To enable Ss to master some new words and expressions.

Ex2 Many people think that Christmas is a western __________, but in fact it is really a worldwide holiday. Christmas actually as a _______ festival celebrated by _________ around the world. Its ______ is around the 3rd or 4th century AD, when the _______ of remembering Jesus’ birth on December 25th first started. Today, of course, many people celebrate Christmas __________ it were just a holiday to ______________ family, rather than a holiday about a _______.

Suggested Answers:

celebration, religious, Christians, origin, custom, as though, have a fun with, belief

Step 3. Grammar point

1. Explain for Ss the grammar point: the modal verb

(1) can/could 可以表示能力、许诺、请求或某种可能性，could还可用于：

①提出委婉的请求，（注意在回答中不可用could）。例如：

—Could I have the television on? 我能看电视吗？

—Yes, you can. / No, you can't. 可以/不可以。

②在否定句、疑问句中表示推测或怀疑。例如：

He couldn't be a bad man. 他不大可能是坏人

(2) may/might 表示允许或请求；表示没有把握的推测；may 放在句首，表示祝愿。

might 表示推测时，不表示时态，只是可能性比may 小。

(3) will/would 克表示请求、许诺、同意、过去的习惯等。但需要注意：

①would like；would like to do = want to 想要，为固定搭配。例如：

Would you like to go with me? 想和我一块去吗？

②Will you…?Would you like…? 表示肯定含义的请求劝说时，疑问句中一般用some,

而不是any。例如：

Would you like some cake? 吃点蛋糕吧。

③否定结构中用will，一般不用would, won't you是一种委婉语气。

Won't you sit down? 你不坐下吗？

(4) shall/should可以表示推测、判断或建议。shall指现在，should指过去。

(5) must/can’t指推测或猜想must用在肯定句中表示较有把握的推测，意为“一定”，否定推测用can't。

2. Ask Ss to find at least four sentences which use modal verbs in the reading text and translate them into Chinese. See who can make the best translation.

Suggested Answers:

(1)… when they can dress up and go to their neighbors’ homes and ask for sweets. (line 9, part 2)

那时他们可以化装并去邻居家要糖果。

(2)Some people might win awards for their , …(line 4, part 4)

一些人可能会因他们的……而获奖。

(3)… and may give children lucky money in red paper. (line 3, part 5)

也可能给孩子们用红包包起来的压岁钱。

3. Ask Ss to finish Ex3 on P6 and check the answers in pairs.

Step 4. Homework

1.Ask Ss to review what has been learned in this period.

2.Ask Ss to finish the exercises of Using Words And Expressions and Using Structures on

P42～P43.

语法教学参考材料：情态动词的语法特征

1）情态动词不能单独做谓语，除ought 和have 外，后面只能接不带to 的不定式。

2）情态动词没有人称，数的变化，但有些情态动词，如can、will也有一般式和过去式的变化。

3）情态动词的“时态”形式并不是时间区别的主要标志，不少情况下，情态动词的现在式形式和过去式形式都可用来表示现在时间、过去时间和将来时间。

1) can 和could：1) can的主要用法是： A. 表示体力或脑力的能力：

eg. The girl can dance very well.

B. 表示说话的推测﹑事物的可能性等: eg. Can the news be true?

C. 在口语中, can可以表示请求或允许: eg. Can I sit here?

2) could的主要用法是：A. could 是can的过去式, 表示与过去有关的能力和推测: eg. We all knew that the young man couldn’t be a doctor.

B. could可以代替can表示请求, 但语气较can客气、委婉:

eg. Could you lend me your dictionary? Could I use your bike?

3) can和could接动词的完成形式，表示可能已经做某事。can用在否定和疑问句中, 表示不相信、怀疑等态度。eg. They can't have gone out because the light is still on.

may 和might ：may 常用来表示： A. 表示请求、允许;比can较为正式: eg. May I come in ? You may go now.

B. 表示说话人的猜测: “也许” “可能”: 通常只用于肯定句和否定句中。

eg. --I believe the man is from England. --But I may be wrong.

The guest may arrive this afternoon.

在肯定句中，may 的可能性比can 高，may 表示现实的可能性，can 表示理论上的可能性。如：The road may be blocked. 这条路可能不通了。

The road can be blocked. 这条路可能会是不通的。

在疑问句中，表示可能性用can。如：Where can he be? 他会在哪呢？

C. 表示祝愿;但语气较正式: eg. May you succeed! May you have a good journey!

might 的用法有: 多在间接引语中表示过去的可能和允许。如:

She said that he might take her bike. 她说他可以拿她的自行车去用。

除了在间接引语中以外，might 一般不表示过去的可能或者许可。如要表示过去的可能可以用could, 表示过去的许可可以用was( were) allowed to 或者had permission to 。

表示现在的可能，其可能性要比may 小。如：She might go home tomorrow.

表示现在的许可, 语气比may 较委婉, 一般用于疑问句(包括间接疑问句), 不可用于肯定句或者否定句。

如: Might I have a word with you? 我可以和你说句话吗？