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人教精通版（三年级起点）英语
精选课件
五年级下册
Unit 3 We should obey the rules.
Lesson 17
精通版·五年级下册
You should, we should obey the rules.
Class rules, Home rules, Public rules.
They all the rules for you and me. Do something, you should, you must do something. Don’t do something, shouldn’t, mustn’t,
that all the things you can’t do!
Let’s chant
S-H-O-U-L-D
Let’s review
What rules do good students often obey at school and at home
home rules
class rules
Ask and answer questions actively.
Be quiet.
Don’t make noise.
Don’t eat in class.
Listen to the teacher carefully.
Don’t be late for class/school.
...
class rules
1. get up late.
2. go home late.
3. read in bed.
1. help to do housework. 2. keep your room clean. 3. go to bed early.
home rules
You should
You shouldn’t
Brainstorm
Besides class rules and home rules, what other types of rules can you think of
Rules
School Rules
Class Rules
Home Rules
Public Rules
...
Free talk
When we are in public places such as parks, museums and hospitals, what public rules should we obey
Today, our friends come to the street to have a social
research. They see some bad things on the street. Look,
what bad things can you see
Look and answer
Look and predict
What do our friends say to them Can you guess
What public rules should we obey in these cases
Watch and check
Look out! You mustn’t cross the street now. You must wait for the green light.
Just talk
cross the street 过马路
wait for the green light
等待绿灯
You mustn’t spit on the ground.
You mustn’t litter.
spit on the ground 随地吐痰
litter 乱丢杂物
You mustn’t pick the flowers.
You must keep off the grass.
keep off the grass
不要进入草地
pick the flowers摘花
You must take good care of young children.
take good care of young children
照顾好儿童
Listen and order the pictures.
( )
( )
( )
( )
1
2
3
4
1. You (must / mustn’t) cross the street now.
2. You (must / mustn’t) wait for the green light.
3. You (must / mustn’t) spit on the ground.
4. You (must / mustn’t) litter. 5. You (must / mustn’t) keep off the grass.
6. You (must / mustn’t) pick the flowers.
7. You (must / mustn’t) take good care of young children.
Listen and circle must or mustn’t.
1. You mustn’t ________________ now.
You must _________ the green light.
Look and fill in the blanks.
2. You mustn’t _________ on the ground.
You mustn’t _________.
cross the street
wait for
spit
litter
3. You must _________ the grass.
You mustn’t _________ the flowers.
4. You must _________________ young children.
keep off
pick
take good care of
Read and fill in the table.
Rules in public places
You must
You mustn’t
wait for the green light
keep off the grass
take good care of young children
cross the street now
spit on the ground
litter
pick the flowers
Read after the recording
Look out! You mustn’t cross the street now. You must wait for the green light.
You mustn’t spit on the ground.
You mustn’t litter.
You mustn’t pick the flowers.
You must keep off the grass.
You must take good care of young children.
Role-play
Look out! You mustn’t ______. You must ______.
You mustn’t ______.
...
...
Let’s write
在不同的公共场合我们要遵守不同的规则。请根据Just talk的内容，以小组为单位，从park, museum,
hospital这三个公共场所中任选其一制定公共规则。
学生四人一组，选择一个公共场所。
学生以小组为单位为该场所制定公共规则。
You must...
You mustn’t...
Step 1
Step 2
句型
Language points
1. Look out! 当心！
look out意为“当心，小心”，用于提醒别人注意某事物。其用法相当于 “Be careful!”。
例句: 当心！你现在不能过马路。
Look out! You mustn’t cross the street now.
2. You must wait for the green light. 你必须等待绿灯。
must是情态动词，意为“必须；一定”，语气强烈，后面跟动词原形，没有人称和数的变化。
其否定形式为must not，缩略形式为mustn’t。
其句型结构为：主语+must (not)+动词原形+其他.
Summary
You must wait for the green light.
You must take good care of young children.
You must keep off the grass.
You mustn’t cross the street now.
You mustn’t spit on the ground.
You mustn’t litter.
You mustn’t pick the flowers.
Public Rules
Exercise
一、根据实际情况，选择相应的单词。
( ) 1. You _____ cross the street when the light is red. ( ) 2. You _____ take good care of young children. ( ) 3. You _____ pick the flowers. ( ) 4. You _____ spit on the ground. ( ) 5. You _____ keep off the grass.
A. must B. mustn’t
B
A
B
B
A
1. A. light B. floor C. cross
2. A. children B. young C. old
3. A. should B. must C. wait
4. A. on B. litter C. at
5. A. green B. red C. light
二、选出下列每组单词中不同类的一项。
1. Review the text of Just talk on Page 32.
2. Talk about some public rules with your partners.
Homework

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