资源简介

(共36张PPT)
Unit4
Do it yourself
Grammar
学习目标
1. 学会运用祈使句表达指令, 用should和had better来提出建议。
2. 能通过听录音获取相关信息。
3. 学会用英语交流DIY话题。
lead in
Instructions in Daily life
No smoking!
No fishing!
Don’t turn right!
Don’t park your car!
Read and think
Turn left! Don’t pick the flowers!
Turn right! Don’t smoke!
Let me help you. Don’t be late again!
Be quiet, please. Don’t park your car!
Please go upstairs! Please don’t eat!
Read the following sentences and tell their meanings.
When do we use these sentences
We use these sentences to give orders or instructions .
Read the sentences again to see what they have in common.
Open the window, Simon.
Don’t open the door.
Let’s make a million smiles.
Be quiet, boys.
Don’t be late again!
They are called imperatives.
GrammarA
祈使句的结构如下：
　　　 do sth
　　　Don’t do sth.
肯定：
否定：
祈使句表示请求、命令、建议等等。
谓语动词一律用原形。
句子中通常不用主语，句末用感叹号或者句号。
Draw the conclusion (得出结论)
祈使句结构
肯定结构
① Do型（以行为动词原形开头）
例如： Sit down! 坐下！ Stand up! 起立！
② Be型（以be开头）
例如：Be quiet! 安静！
Be careful！小心！
③ Let型（以let开头）
例如： Let me try. 让我试试看。
Let’s look at the map. 让我们看看地图。
2. 否定的祈使句
（1） Don't + 动词原形
Don't stand up. 别站起来。
Don't be careless. 别粗心。
Don't let them play with fire. 别让他们玩火。
（2） Let's ( let sb ) + not + 动词原形
Let's not say anything about it.
对于这件事，咱们什么也别说。
Let them not play with fire. 别让他们玩火。
否定结构
结构 例句
Don’t +动词原形 Don’t be late. 别迟到。
Let’s + not +动词原形 Let’s not say anything about it.
对于这件事，咱们什么也不要说。
Don’t let +第三人称宾格+动词原形 Don’t let them play with fire.
别让他们玩火。
● 表示请求、劝告的祈使句还常常在句前或句末加上please, 构成句式：Please …或 …, please. 以使语气更加缓和或客气。例如：
Please stand up. 或
Stand up, please. 请站起来。
Please have a rest. 或
Have a rest, please. 请休息一下。
祈使句的回答
祈使句通常表示将来要发生的动作，所
以回答时，一般用will或won’t。
— Don’t forget to do your homework.
— I won’t.
— Remember to turn off the lights.
— I will.
祈使句的反义疑问句
Let’s … , shall we
Let us. … , will you
肯定/否定祈使句，will you
Let’s go,
Let the boy go first,
Don’t smoke here,
shall we
will you
will you
How to make cards
Millie is teaching her classmates how to make cards to help them remember things better. Look at the pictures and help Millie complete the instruction.
cut
draw
write
give
keep
look
try
_____ out pieces of card with a pair of scissors.
_____ some words or a sentence on each card.
Cut
Write
cut
draw
write
give
keep
look
try
_____ a picture about the words or sentence on the other side of the card.
_____ at the picture and ___ to remember what is on the other side.
Draw
Look
try
第二章节
practice
44%
16%
23%
6%
(1)Why not fill our lives with________ Be happy and ________every day!A. happy; smile B. happily; smiling C. joy; smiling D. joy; smile(2)－Don't forget to bring your homework to school tomorrow.－________.A. OK! I will B. OK! I won't C. I'm afraid I will D. I'm afraid I won't (3)—____________your geography book here tomorrow. Don’t leave it at home again.—____________.A. Take; No, I don’t. B. Take; No, I won’t.C. Bring; No, I don’t. D. Bring; No, I won’t.(4)______the salad in the fridge for a while can make it _____better.A．Keeping; taste B．Keep; taste C．To keep; tastes D．Keeping; tastes(5) Don’t watch too much TV, _______ A. will you B. won’t you C. shall we D. do you
答案：DBDAA
(6)_______ out your love, and the world will become a better place to live in.A. Speak B. To speak C. Spoke D. Speaking(7)—Sometimes mistakes are also our friends.—I think so. We shouldn't say “_______”very often when children try doing something.A. Be patient B. Keep tryingC. Don't give up D. Don't make mistakes(8)—Mum, is this big cake for us —Sure, Mary,________it into pieces and let’s share it.A.to cut B. cutting C. cut D. cuts(9)If you want to become a “do-it-yourselfer”,________to DIY class.A.come B.coming C.to come D.came(10)I’m hungry. Let us go out for a big lunch, ________ A. won’t we B. don’t you C. shall we D. will you
答案：ADCAD
(11)—Kate, ________the phone. I’m making a birthday cake.—Coming, Mum.A. answers B. answer C. to answer D. answering (12)_________ late again, Bill! A. Don’t to be B. Don’t be C. Not be D. Be not (13)_________ cross the road until the traffic lights turn green. A. Not B. Won’t C. Doesn’t D. Don’t (14) Let’s do it at once, _________ A. shall we B. will you C. do we D. do you
答案：BBDA
GrammarB
should and had better
Using should and had better
Suzy doesn’t think her cousin knows much about DIY either. What did she advise him to do What do you think she said to him about this
You should know a little about DIY.
You should not put so many books on the shelf.
Your watch is broken. You had better buy a new one.
You had better not be late for school.
Using should and had better
We use ‘should’ and ‘had better’ when giving
advice and telling people what is the best or right
thing to do.
The tone of had better is stronger than should.
当我们给他人提建议时，可以用had better和should，表示“最好”或“应该”做某事， had better的语气比should强一些。
Your watch is broken. You had better buy a new one.
你的手表坏了，你最好买个新的。
You should exercise more.
你应该多锻炼。
had better do sth
had better not do sth
It is pretty cold. You'd better put on my coat.
She'd better not play with the dog.
should do sth
should not do sth
You should be quietly in class.
You should not be late for school.
DIY advice
Read the advice and make sentences with should (not) or had better (not).
begin your work without reading them
You shouldn’t begin your work without reading them.
You had better not begin your work without reading them.
should (not)
had better (not)
1. There are many useful books about DIY.
You should / had better buy some to learn more about it.
2. DIY is not easy.
You shouldn’t / had better not begin your work without reading them.
3. Instructions are important.
You shouldn’t / had better not begin your work without reading them.
4. Scissors can be dangerous.
You should / had better be careful when you use them.
5. Sometimes it’ll take time to do a DIY job.
You should/ had better be patient.
1. Jim, _____ me a hand.
A. gives B. is giving C. will give D. give
2. ____ careful, Jenny! There is a tree in front of you.
A. Am B. / C. Be D. Was
3. Let's ____ our time.
A. not waste B. no wasting C. not to waste D. no waste
4. —____ higher, and you will see the house.
—OK.
A. If you stand B. To stand
C. When you stand D. Stand
9. _____ forget to write to me when you ____ get there next Tuesday.
A. Don't; will B. Please; will
C. Please; / D. Don't; /
10. _____ let anyone open the door.
A. Don't B. Will C. Not D. No
11. ____ 6 and 4, and you will get ten.
A. Added B. Adding C. To add D.Add
12. .____ late again, or I’ll report it to your father.
A. Don’t be B. You aren’t
C. Can’t be D. Aren’t
13. -- Can I leave this door open at night
---You _______ better not .
A. should B. would C. could D. had
14.You _____ smoke while you are walking around in the woods here.
A. should B. shouldn't C. shouldn’t to D. should to
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