高一英语必修三Unit 2 Healthy eating公开课教案.
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1 Unit 2 Healthy eating
Learning about language: Grammar
Ⅰ.Knowledge aims :
Teaching goals:
1. Get students to know more about modal verbs.
2. Let students learn the use of ought to、should、must、have to.
Abilities goals:
Enable students to use modal verbs correctly and properly according to the context.
Emotion goals:
1. Get students to become interested in grammar learning.
2. Develop students’ sense of group cooperation.
Ⅱ. Teaching importance：
1. The usage of each pair of the modal verbs.
2. The sameness and difference among these pairs of the modal verbs.
3. Correctly understand the change the modal verbs bring to the sentence, that is , their
functions.
Ⅲ.Teaching difficulties:
Enable students to learn how to use ought to correctly.
IV. Teaching methods:
1 Task-based teaching and learning
2 Explanation
V. Teaching Procedures:
Step 1 Leading-in
T: Look at some proverbs.
The first wealth is health .
An apple a day keeps the doctor away.
Early to bed and early to rise makes a man healthy , wealthy and wise.
Without health no pleasure can be tasted by man.
Good health is over wealth. Ask the students to discuss the following questions. If you’d like to give
advice or opinions, you can use the modal verbs.
what should/shouldn’t we do to keep healthy?
What ought we to do to keep healthy?
What kind of food must we eat to be strong?
Step 2 Grammar learning
1.What is called the modal verbs?
--Modal verbs help other verbs express a meaning or an idea. Words like should, can, have to,
must, and a few others are called modals.
2 2. What modal verbs have you learned?
can/ could
may/ might
will/ would
shall/ should
must/ have to
ought to / need
3. Thinking and discussing
a. Let students think over and discuss with a partner how each of these modal verbs is being used in
the situations.
Intention Duty Permission Possibility Guessing Ability
b. Use the function words below to explain the meaning of the modal verbs. If students have some
difficulty, give them a hand.
1).By lunchtime they would all be sold.
2). His restaurant ought to be full of people.
3). Nothing could have been better?
4).I will take all that fat off you in two weeks.
5).He could not believe his eyes.
6).He wondered if he should go to the library to find out.
7).He couldn’t have Yong Hui getting away with telling people lies.
8.Something terrible must have happened.
Step 3 Discussion and explaining
1. Discovering
Let Ss look at the pictures and fill in the blanks according to the Chinese.
You _ought to_______ go and see the doctor.
你应当去找医生看看病。
We know if we keep at it we __should____ succeed
我们知道如果我们坚持下去就应该会成功。
We _have to_____ put on warm clothes in winter.
冬天的时候，我们不得不穿上温暖的衣服。
All passengers _must____ wear seat belts.
所有乘客都必须系安全带。
2. Summing up the use of some modal verbs
Let students have a discussion about the difference between them. The students will learn the
usage of these modal verbs and try to make the students clear the functions of modal verbs.
1). the use of ought to /should
2). the use of must / have to/ need
Step 4 Grammar practice
1) Look at the pictures and fill in the blanks using the above modal verbs .
You look tired. You __should_____ go to bed now.
The floor is clean. You __needn’t__ sweep it.
The old restaurant _ must___ be very good. It’s always full of people.
3 2) Choose the correct answer
1."Must I drive to his house and pick up the
children?"
"No, ."
A. you shouldn't B. you might not
C. you needn't D. you mustn't
2. Put on more clothes. You be feeling cold
with only a shirt on.
A. can B. could C. must D. would
Suggested answers :C C
3) Translate according to the Chinese.
1. 我不得不接受你的建议。
2. 未经允许，你不能来这儿。
3. 你应当去照顾你妹妹。
4. 他们想必已到那儿了。
Suggested answers:
1.I have to accept your suggestion.
2.You mustn’t come here without permission.
3.You should take care of your sister.
4.They ought to be there by now.
Step 5 Consolidation
Choose suitable modal verbs from below to complete the following dialogues on Page 13.There may
be more than one possibility.
1. SAM: How can I grow thinner, Mum?
MUM: Well, you _______ eat food with plenty of fiber that helps you digest better. And you ______
stop drinking cola or eating sweet food.
SAM: Does it mean I _______ eat my favourite fried chicken any more?
MUM: Not exactly, if you love fried chicken, you _______ give it up. Just eat it less often. You
__________________________ worry too much: a little fried chicken ________ do you good!
2. Doctor: You are sick because you’ve eaten poisonous mushrooms. Where did you get them?
