冀教版九年级英语全册教案

Unit 1 Stay Healthy.

Lesson 1 What’s wrong, Danny?

1. Analysis of the Students

The students of Grade 9 have mastered certain vocabularies，expressions and structures. They also have the abilities of self-teaching and working in groups. Most of them are willing to express their opinions in English.

2. Analysis of Teaching Content

Lesson 1 is the first lesson in Unit 1, Book 5.This unit focus on the subject staying healthy. Students cares about the subject because it is close to everyone. Lesson 1 mainly talks about the story that Danny’s stomach hurts and to see the doctor. It also tells us an old saying: Don’t eat too much, keep healthy.

【知识目标】

(1)Be able to use: stomach, regret doing, have a fever, pale, examination, pardon, take an X-ray.

(2)To understand: a. I don’t feel well.

b. Don’t worry. The doctor will see you soon.

c. It’s going to be OK, son.

【能力目标】

To develop the students’ abilities of listening, speaking, reading and writing.

【情感目标】

To encourage the students not to be afraid when they meet some trouble or something difficult.

【教学重点】

(1)To master the important words, phrases and sentences.2·1·c·n·j·y

(2)To master the usage of the phrases.

【教学难点】

To understand the whole lesson and make a new dialogue.

Tape recorder, Multimedia

Step 1. Warm-up

1. Sing the song.

2. Ask and questions:

T: If you don’t feel well, what should you do?

Students: see a doctor, take some medicine, drink some water, have a rest more.

Step 2. Presentation

1.Show the picture and guess: What’s wrong with Danny?

2.Listen to the text and tell the sentences true or false.

(1.) At three o'clock in the morning, Danny has got a pain in his stomach, so he wakes his parents up. ( )

(2.) Mr. Dinosaur think Danny ate so much donuts so his stomach hurts. (）

(3.) They go to the hospital by taxi. ( )

(4.) Though it's very late in the night, the hospital is still open. ( )

(5.) A doctor talked to Mr. Dinosaur and took them to a room.( )

(6.) Mrs. Dinosaur will stay with Danny.（）

3.Listen the text again and tick the correct answers.

(1)What’s wrong with the woman?

She has a high fever.

She has a cold.

(2) Did the medicine help her get well?

Yes, it did.

No, it didn’t.

(3) What advice did the man give to the woman?

She should go to see the doctor.

She should try other medicine.

4.Read the text and answer the questions.

(1) Why does Danny wake up his parents early in the morning?

(2) What does Danny regret doing?

(3) How do they get to the hospital?

(4) What does Dr. Ling ask Danny to do?

5. Show the language points:

wake up 醒来，把吵醒，叫醒

sit up 坐起来

have got a fever 发烧

arrive at 到达

talk with 同……说话

look up 查阅,在书中查到

point to 指向

turn to 转向

6. Explain the language points:

At 3:00 AM, Danny wakes up his parents. 凌晨3点，但你叫醒了他的父母。

I tried to wake up my wife by ringing the door-bell, but she was fast asleep. 我按了门铃想唤醒我的妻子，但是他睡得很香。

Please wake me up at 8 o’clock. 请在八点钟叫醒我。

Attention：

wake up是一个由动词和副词构成的词组。当其宾语是名词时，名词可以放在wake up中间，也可以在wake up的后面；但当宾语是代词时，代词必须放在wake up中间。

Please wake him up! 请把他叫醒！

Wake up the boy. (= Wake that boy up.) 叫醒那个男孩。

When they arrive at the hospital, Danny’s father talks with a nurse.

当他们到达医院的时候，但你的父亲同护士谈了话。

arrive at到达，经过努力达到

He arrived at my hometown yesterday.

他昨天到了我的家乡。

They arrived at a decision after much thought at last.

最后他们经过反复考虑后做出了决定。

Attention：

arrive in后一般接表示大地方的名词；arrive at后一般接表示小地方的名词。

reach, get to与arrive at/in的区别

三者都有“到达”之意。所不同的事，reach是及物动词，后面可直接接表示地点的名词。get 加上to，即get to才是“到达”的意思。arrive为不及物动词，要加上介词at/in才能接表示地点的名词。

--When did you reach /get to/arrive in Hangzhou? 你是什么时候到杭州的？

--I reached /got to /arrived in Hangzhou yesterday evening. 我是昨天晚上到的杭州。

When she reached /got to/arrived at the shop, she found the shop was closed. 当他到达商店时，他发现门关了。

Look it up in a dictionary. 在字典里查一下。

When you do not understand a word, you can look it up in this book. 当你不懂一个单词时，可以查这本书。

Can you look up a dictionary? 你会查词典吗？

Attention：

look up是由动词look和副词up构成的词组。如果他的宾语是一个名词，名词可以放在look up之间，也可以放在look up的后面；但如果他的宾语是一个代词，代词必须放在look up 之间。

Extension：

look up的其他用法:a.好转:Things are looking up! 情况正在好转！

b.寻访到，探访（某人）

On my way home, I looked up an old friend of mine. 在回家的路上，我去看望了一下我的老朋友。

Danny needs to stay in the hospital tonight.

今晚丹尼尔需要呆在医院里。

need用法:

表示“需要”，做实义动词用时，有人称和数的变化，后接名词、代词、带to的不定式、

动名词等。

He needs some help.

它需要一些帮助。

He needs to look after the old man.

它需要照顾这位老人。

The bike needs mending/to be mended.

这辆自行车需要修理一下。

What’s wrong, Danny? 你怎么了，丹尼？

医生出诊常用语：

What can I do for you?

哪儿不舒服？

Where does it hurt?

哪儿痛？

What’s the trouble?

怎么了？

What’s the matter /trouble with you?

你哪儿不舒服？

7.Fill in the blanks according to the dialogue.

At 3：00 am, Danny w_____ up his parents，his stomach h_____.Mr. Dianosaur f _____ Danny′s head .he has got a bad f_____. Danny′s father get d_____, then they get into their car .At the hospital, a n_____ takes Danny to a small room .then Dr. Ling feels Danny′s a_____. Danny is

w_____ in poor s_____. He wants to cry again. Dr. Ling says to Mr. Dianosaur that Danny n_____ to stay in hospital.

Step 3. Practice

1.Read the dialogue with your partner.

2.Make a new dialogue in groups.

Step 4. Consolidation

Role play: Suppose you are on your way home. You see an old woman lying on the road. You try to send her to the hospital to see a doctor. Make up a dialogue with your partner and act it out. Step 5. Extension

1. What does the doctor say?

What is wrong with you? / What is the matter?

Have you taken your temperature?

How are you feeling now?

Do you have a fever?

Did you have anything to eat? What did you eat?

Don’t worry, there’s nothing serious.

You will be all right soon.

Take this medicine three time a day.

Drink more water and had better rest in bed.

2. What does the patient say?

My stomach hurts.

I con not sleep well all night.

I have taken my temperature and the temperature is …

I don’t want to eat anything.

3. Retell the text according to the following pictures and key words:

wake up, never hurt this much before, sit up, feel Danny’s head,

take to the hospital, be open / closed, get dressed, get into the car,

arrive at, point to, turn to, hold Danny’s hand, stay with.

Step 6. Enhancement

T: Look at these pictures. Work in pairs. Please make up a dialogue. One person can be the doctor, and the other can be the patient. You can use the sentences we summed up.

Step 8. Homework

1. Retell the story with your parents and friends.

2. Finish the workbook.

略。

Unit 1 Stay Healthy.

Lesson 2 A visit to the Dentist

1. Analysis of the Students

The students of Grade 9 have mastered certain vocabularies，expressions and structures. They also have the abilities of self-teaching and working in groups. Most of them are willing to express their opinions in English.

2. Analysis of Teaching Content

Lesson 2 is the second lesson in Unit 1, Book 5.This unit focus on the subject staying healthy. Students cares about the subject because it is close to everyone. Lesson 2 mainly talks about Wang Mei’s visit to the dentist. It also tells us an old German saying: Fear makes the wolf bigger than he is. It can raise Ss’ interests easily.

【知识目标】

(1)Be able to use: toothache, German, have no choice but to do, refuse to do\sb.\sth

(2)To understand: dentist, rotten, fortunately, headset, aching, wolf, go to the dentist, have a toothache, right away.

【能力目标】

To develop the students’ abilities of listening, speaking, reading and writing.

【情感目标】

To encourage the students not to be afraid when they meet some trouble or something difficult.

【教学重点】

(1)To master the important words, phrases and sentences.

(2)To master the usage of refuse sb.\sth.\to do, have no choice but to…

【教学难点】

To understand the whole lesson and discuss how to take care of our teeth.

Tape recorder, Multimedia

Step 1. Warm-up

Free talk: T: Have you ever had a toothache?

What does a dentist do?

Step 2. Presentation

5.Show the new words.

6.Listen to the tape and fill in the blanks

(1) Wang Mei is really afraid of going to the_______.

(2) This morning, she woke up with a terrible__________.

(3) One of her ______was probably rotten.

(4)On the way home, Mum told her an old_______ saying.

Then pay attention to “dentist”. Practice the word with the picture.

3. Listen again and write true (T) or false (F)

(1)Wang Mei was scared to see the dentist. ( )

(2)Wang Mei showed great interest in everything at the dentist’s office. ( )

(3).Dr. Hu asked Wang Mei to watch TV while she worked. ( )

(4).Dr. Hu was kind and good at fixing teeth. ( )

(5).Wang Mei’s mum told her an old Russion story on the way home. ( ) 4. Self learning:

(1) Underline something that you don’t understand and discuss in groups.

(2) Match each paragraph with its main idea.

5. Language points:

I’m really afraid of going to the dentist.

be afraid of害怕……，后跟名词、代词或动名词，表示害怕会发生某事或某情况，相当于be scared of.

I’m afraid of going out at night.我害怕晚上外出。

【Extension】(1)be afraid to do sth. 表示“因害怕而不敢做某事”

He is afraid to go out alone at night.

他不敢晚上一个人出去。

(2)“I’m afraid+从句”表示“我恐怕……”，常用来表达不愿发生的事情。

I’m afraid I can’t go there with you.我恐怕不能和你一起去那儿。

I don’t know why , but I have had this fear since I was very young.

since为连词，意为“自从……以来”，与现在完成时连用，其后可跟句子，也可跟“时间段+ago”。

I have worked here since two years ago.

我在这儿工作两年了。

I had no choice but to go with her.

have no choice but to do sth.意为“除了做某事以外，别无选择”或“只好做某事”。

I have no choice but to give up.

我没有办法，只好放弃。

Fortunately, the dentist, Dr. Hu , was very kind.

fortunately为副词，意为“幸运地”，其同义词为luckily，反义词为unfortunately/unluckily，其形容词形式是fortunate。fortunately多用作插入语，比luckily更具强调性。

She saw right away that I was scared and told me not to worry.

right away意为“立刻，马上”，其同义短语有：at once , in a minute/moment。

scared为形容词，意为“对……感到恐惧的，害怕……的”。主语通常是人，指人对某事恐惧/害怕。be scared of…意为“对……感到害怕”。

Before I knew it, my aching tooth was fixed.

aching为形容词，意为“疼痛的”，它是由ache去-e加后缀- ing构成的形容词。

pain, ache

(1)pain既可指一般疼痛，又可指剧痛。疼痛范围可以是全身或局部,时间可长可短。

(2)ache指人体内部或外部的某一器官感觉上较持久的疼痛。常与head/tooth/stomach/back等表示身体部位的词连用，构成合成词。

was fixed是被动语态形式。当谓语动词与主语之间是动宾关系时，句子就用被动语态。被动语态中谓语动词为“be+过去分词”。fix的过去分词在词尾直接加上- ed。

My tooth did not hurt at all.

not…at all意为“一点儿也不，根本不”。

I don’t know about it at all.

对那件事我一点儿也不知道。

It can be used to address doctors such as dentists, surgeons, physicians and some professors.

be used to do sth.意为“被用来做某事”，属于被动语态结构。

Wood can be used to make paper.

木头可被用来造纸。

Step 3. Practice

3.Read the letter with your partner.

4.Find the words in this lesson that have the same meaning as the circled words.

(1) Jack invited her to the tea party, but she said no to his invitation.

(2) She’s had a pain in her tooth all day.

(3) I was late, but luckily the train was late, too.

(4)The students complete the activities on their computers and wear their headphones to talk to their teacher.

(5)These bananas will go bad in a week.

5.Fill in the blanks according to the fist letters.

(1) I went to see a d________ to fix my rotten tooth yesterday.

(2) She r________ to accept that there was a problem.

(3) I got a t________ and couldn’t sleep the whole night.

(4) F_________, he was soon offered another job.

(5) A w__________ is a large animal that lives and hunts in groups.

Step 4. Consolidation

Work in pairs and talk about your experiences at a doctor’s office.

Task tips:

1. Do you still remember one of your visits to a doctor?

2. Are you afraid of going to see a doctor?

3. How do you overcome fear when you face a difficult situation?

Step 5. Extension

Discuss: How should we take care of our teeth?

Teeth are very useful.

Brush your teeth twice a day.

Eat some soft food.

Eat less hot food, cold food or hard food.

Change your toothbrush（牙刷）often.

Don’t eat sweets before sleeping.

If you have a toothache, you should go to see a dentist,

Healthy teeth, healthy body!

Step 6. Homework

1. Composition: if you're a dentist, give us some advice on how to take care of our teeth, please.

2. Finish off the exercises in the activity book.

略。

Unit 1 Stay Healthy.

Lesson 3 Good Food, Good Health

1. Analysis of the Students

The students of Grade 9 have mastered certain vocabularies，expressions and structures. They also have the abilities of self-teaching and working in groups. Most of them are willing to express their opinions in English.

2. Analysis of Teaching Content

Lesson 3 is the third lesson in Unit 1, Book 5.This unit focus on the subject staying healthy. Students cares about the subject because it is close to everyone. Lesson 3 mainly talks about good food, and the balanced diet. It also tells us an old saying: A balanced diet will give you lots of energy.

【知识目标】

(1) Master the words and expressions: grain, corn, vitamin, mineral, fiber, protein, bean, Asian, soy, calcium, bone, yogurt, contain, balanced, diet.

(2) Master the following phrases.

be made from, be different from, be full of, stay strong, a balanced diet.

【能力目标】

Learn four food groups.

【情感目标】

Express the idea “good food ,good health”, If you want to be healthy, please eat a balanced diet.【教学重点】

The difference between “be made from...” and “be made of...”.

【教学难点】

The difference between “be popular with sb.” and “be popular among”.

Tape recorder, Multimedia

Step 1. Warm-up

Free talk: T: 1. Do you like eating vegetables or meat?

What kind of meat or vegetables do you like best?

What food would you choose if you are hungry? Why?

Do you think you have a balanced diet?

2.Show some picture of food, and ask Ss:

What food would you choose if you are hungry? Why?

Do you think you have a balanced diet?

Step 2. Presentation

7.Show the new words (with their pictures).

2. Listen to the tape and answer the questions:

(1)How many food groups are there?

(2) What are the food groups?

(3) What is calcium?

(4) What is a balanced diet?

3. Explain the food groups

a. Foods from grain

b. Fruit and vegetables

c. Protein food

d. Calcium foods

4. Language points

1）Here are the four food groups:

Here are…是一个倒装句型，意为“这些是……”

其中的be要根据be后的名词确定单复数，单数名词要用is;

复数名词要用are。

Here is a card for you.这儿有你一张卡片。

Here are the problems they can’t solve.

这些是他们不能解决的问题。

2）Breakfast cereal is also made of different grains.

早餐麦片也是由不同的谷物制成的。

be made of…意思是“由……制成”，通过成品可以看出原材料。These tables are all made of wood. 这些桌子都是木头做的。

类似的短语还有：

be made from… “由……制成”，通过成品不能看出原材料。

be made in…“在某地制造”。

be made by somebody “由某人制造”。

be made into… “把……制成”，指把原料制成成品。

3）Fruits and vegetables are also rich in vitamins , minerals and fibre. be rich in表示“在……方面很富有充裕”。

Vegetables are rich in vitamins.

蔬菜富含维生素。

4）They help you grow and stay healthy.

stay healthy , keep healthy , keep in good health都表示“保持健康”。stay healthy侧重某人一直处在一种健康的状态；keep healthy侧重在主观意愿上“保持健康”，特别是通过某种方式,如锻炼、运动、饮食等方面来保持健康。

5）Your body needs calcium to stay healthy.

to stay healthy在这里是动词不定式短语作目的状语。动词不定式短语作目的状语时，既可以放在句首，也可以放在句末，翻译时常译为“为了……”。

6）milk, cheese and yogurt contain calcium.

contain为及物动词，意为“包含，含有”，不用于进行时。可表示包含事物的全部或部分,强调“整体中含有……，某物体中含有……，容器中有……”，是指包含的内容。

7）A well-balanced diet includes foods from each food group.

本句也可以写成A well-balanced diet contains/has foods from each food group.

Step 3. Practice

6.Listen and follow

7.Read the text with your partner.

8.Read and choose the food words.

grain fruits and vegetables protein foods calcium foods

9.Match each word with its definition. Then complete the passage using the four words.

T: Let’s do a small exercise. Match the words with its definition.

corn a thick, white and creamy dairy food

yogurt a plant with yellow seeds that can be eaten

beans the food that you eat and drink regularly

diet a good source of protein

T: Who can put the four words into the right blanks.

It’s importan t for us to keep a balanced _____. To do this, we must eat many different kinds of foods. Bread, noodles, _____and rice are all grains. Grain foods give us vitamins,

minerals and fibre. Fish, meat and ______ are full of protein. Calcium, which can be found in cheese, milk and _______, is good for our bones and teeth.

Step 4. Consolidation

1.What do you often eat at every meal? Do a survey and compare your eating habits with those

of your classmates.

T: So much for the text. Now ask your partner “What do you often eat for breakfast, for lunch, and for supper?” Compare your eating habits with hers or his, See who should make a change.

Model: My friend Denny has bread and milk for breakfast. He always has donuts for lunch and supper. I’m much more different. I have bread, eggs, a banana and milk for breakfast. I have rice and vegetables for lunch and noodles or cereal and vegetables for supper. I think Danny should change his eating habits. He should eat more fruits and vegetables. He should eat more protein foods like meat, fish and eggs.

Step 5. Extension

1.Enjoy a video about food.

2.Get the sentence: Your “diet” is all the things that you eat. To have a balanced diet, you need to eat some food from each food group. A balanced diet will give you lots of energy.

Step 6. Homework

1.Write a composition: How to keep healthy. (About 80 words)

2. Finish the exercises in the activity book.

略。

Unit 1 Stay Healthy.

Lesson 4 Not Smoke, Please

1. Analysis of the Students

The students of Grade 9 have mastered certain vocabularies，expressions and structures. They also have the abilities of self-teaching and working in groups. Most of them are willing to express their opinions in English.

2. Analysis of Teaching Content

Lesson 4 is the forth lesson in Unit 1, Book 5.This unit focus on the subject staying healthy. Students cares about the subject because it is close to everyone. Lesson 4 mainly talks about smoking. It also tells us an old saying: Love our body.

【知识目标】

(1) Master the words: smoke, harmful, disease, lung, breathe, harm, cigarette, whenever, risk, somebody.

(2) Master the phrases:

Millions of, as a result of, second-hand smoke, take a risk, get into the habit of, stay away from. 【能力目标】

Improve reading ability and express harmful effects of smoking and how to stay away from cigarettes.

【情感目标】

Through the study of the lesson can make the students learn about smoking is harmful to our health and stay away from cigarettes.

【教学重点】

The usage of “plenty of”

【教学难点】

The usage of “be away from”.

Tape recorder, Multimedia

Step 1. Warm-up

Free talk: T: Why do people get ill?

What should we do to stay healthy?

Step 2. Presentation

8.Show the new words (with their pictures).

2. Listen and tell us true or false

(1) As a student, you should never smoke. ( )

(2) Every year, thousands of people around the world die as a result of smoking. ( )

(3) Once you get into the habit of smoking, it’s easy to give it up. ( )

3. Listen to the tape and answer the questions:

Danny has been away for _____________.He must _____.

Brain would like to make a poster about ____________.

A lot of people would ____________if they didn’t smoke.

https://www.360docs.net/doc/071645838.html,nguage points:

Once you get into the habit of smoking, it’s not easy to give it up.

一旦你养成吸烟的习惯，就不容易戒掉了。

get into the habit of doing…

意为“养成或形成……习惯”，介词of后加动名词作宾语。

His uncle has got into the habit of drinking wine.

他叔叔养成了喝酒的习惯。

He’s been away for three days now. 他离开学校三天了。

be away from +地点，从哪里离开，表示状态可以和时间段连用。

leave+地点，离开某地，结束性动词，不可以和时间段连用。

He left Beijng last Monday. 他上一周离开了北京。

He has been away from Beijing for a week. 他离开北京一周了。

leave for+地点，离开去某处

They left for Shanghai yesterday. 他们昨天离开去上海了。

He must be ill. 他一定是病了。

must 表示推测“一定”，常用于肯定。

School is more fun when Danny is here. 丹尼在的时候，学校生活更有趣。

fun是不可数名词，“快乐，娱乐，乐趣”.

Have fun! =Enjoy oneself! 尽情玩吧！

make fun of sb./sth. “嘲笑某人或某事，开某人的玩笑”

It is impolite to make fun of the disabled. 笑话残疾人是没有礼貌的。

I’m going to phone him after school. 放学后我将给他打电话。

phone vt. & vi. & n. 打电话；给……打电话

I phoned my parents. 我给父母打电话。

n. 电话；电话机

My father gave me a nice toy phone. 我爸爸给我一个漂亮的玩具电话。

提示：与“电话”有关的单词

call vt. 打电话给……

Please call me at nine. 请九点钟打电话给我。

ring vt. 打电话

She rang me at noon. 中午他打电话给我了。

On Wednesday, I rested and drank plenty of water. 在星期三，我休息了一周，并喝了许多水。1）rest v. 歇息，休息，使休息，歇歇脚，把靠在……，终止，停止

I rested for an hour before I went out. 在出去前我休息了一个小时。

You have to rest your feet now. 你现在必须歇歇脚了。

Let the argument rest there. 让争论就此为止吧。

n. 休息

The workers need a rest from work. 工人们需要停止工作休息一下。

2）plenty of很多的，足够的，既能修饰可数名词，又能修饰不可数名词。

The room contained plenty of students. 屋子里容纳很多学生。（复数名词）

There is plenty of furniture in the shop. 在商店里有很多家具。（不可数名词）同义词组a lot of, lots of

plenty of, a lot of, lots of等词组做主语时，谓语动词要根据主语是可数或不可数名词决定单

复数形式。如：

There’s lots of rice in the bag. 那只口袋里有许多大米。

I feel well today. 今天我感觉好多了。

well adj.& adv. 好

well, fine, good与nice

well做形容词时表示人的身体健康，作副词时表示事情做得好。

It’s not easy to learn English well. 学好英语不容易。

good是形容词，表示人品好，事物好。

He is a good teacher. 它是一位好老师。

fine是形容词，常用来表示身体好，天气晴朗。

--How are you? 你怎么样？

--I’m fine. 我很好。

It’s a fine day today. 今天是个好天气。

nice形容词，常指取悦于感官的事物，含有感情色彩的好。

Mary is a good girl. 玛丽是个好女孩。

A lot of people would live longer if they didn’t smoke.这是一个虚拟语气的句子，表示说话人的一种愿望、假设，与现在事实相反。

If I were you, I would help you. 如果我是你，我会帮助他。

There is too much smoke in the room. 昨晚我喝啤酒太多了。

too, much too与too much

too用在形容词或副词前，如：

He is too careless in doing anything. 他做任何十多太粗心了。

much too太，much too的中心词是too, much修饰too，用以加强语气。

Too much的中心词是much，too修饰much以加强语气。Too much修

饰不可数名词，意为more than enough与too many相对，后者修饰可

数名词。

It’s a good start. 这是一个好的开端。

start n.& v. 开始，发生，开端

We made an early start in the morning. 我们早上很早就出发了。

start v. 开始，开动，创办，开设，出发，动身

His work starts at half past eight, and finished at a quarter to five. 他的工作八点半开始，四点四十五结束。

The man can’t start the car. 这个人发动不起来这辆车。

He started a new shop last year. 去年他新开了一家商店。

We must start early. 我们得早点出发。

start与begin: 两者都可以作“开始”解。begin指“开始”某一行动或进程，与end相对；start而动作性较强，着重于“开始”或“着手”这一点，带有突然开始的意思，其反义词为stop。

Let’s help people stay healthy! 让我们帮助人们保持身体健康吧！

这是一个义动词开头的祈使句。Let’s是let us的缩写形式，表示建议。us意为“我们”，放在动词后作宾语。

Let’s go to school. 咱们上学去吧。

Let’s play basketball. 咱们打篮球去吧。

let后跟一个名词或宾格代词，再接一个动词原形，表示“让某人做某事”，let sb. do sth. let’s 与let us: let’s表示“让我们”，是let us的缩写形式，他表示说话人建议听话人和自己一起去做某事；let us表示说话人建议听话人允许我们做某件事。

Mr. Wang let us read the book. 王老师让我们读书。

Let’s go home now. 让我们现在就回家吧。

Step 3. Practice

1. Read and answer:

(1) What is the main idea of the text?

(2) Complete the information chart in groups.

2.Discuss: Why is smoking harmful?

(1) Smoking will cause some serious diseases, like lung

cancer, heart disease, etc.

(2)Smoking hurts not only yourself, but also other people,

because other people breathe too much cigarette smoke.

So smoking is not allowed in some public places.

3. Sum up the harm of smoking.

Step 4. Consolidation