Module 4 Unit 12 Fire-第1课时课件(30张ppt)

Module 4 The natural world
Unit 12 Fire
Period 1
1. 词汇：fire; hurt; must; careful; smoke; hate
2. 句型：(1) We must be careful with fire.
(2) We mustn't play with maches.
3.情感目标：能够认识到火的危险
课时学习目标
课堂导入
What mustn't we do at home?
We mustn't play with matches.
Fire safety
课堂导入
What mustn't we do in the forest?
We mustn't smoke in the forst.
Fire safety
课堂导入
What we mustn't do ...?
We mustn't ...
课堂练习
What we mustn't do at school？
We mustn't eat at school.
课堂练习
What we mustn't do ...？
We mustn't ...
Look and learn
Don't smoke!
Don't play with matches!
Don’t smoke. 不要吸烟。
此句是以动词原形开头的祈使句的否定形式，其句型结构为“Don't+动词原形（+ 其他）.”，意为“不要 / 不允许……”。以动词原形开头 的祈使句的否定一般是在动词原形前加 don't，也可用否定副词 never 构成，以加强否定含义。
例
Don't make any noise. 不要制造噪音。
知识讲解
Listen and say
Fire can burn down a lot of trees. It can hurt people too. We must be careful with fire.
Listen and say
Children, what do you know about fire safety? What mustn't we do in the forest or at home?
We mustn't smoke in the forest.
We mustn't play near fires at home.
We mustn't play with matches at home.
Very good. Safety first.
例句 We must be careful with fire.
我们必须小心用火。
单元新词
careful
小心的
例句 Don't play with fire.
不要玩火。
单元新词
fire
火；火灾
例句 I know some tips about fire safety.
我知道用火安全的小技巧。
单元新词
safety
安全
例句 The fire is burning.
这里着火了。
单元新词
burn
燃烧；烧
例句 Take care. Don't hurt yourself.
小心点。别伤到你自己。
单元新词
hurt
（使）受伤
例句 No smoking here.
这里严禁吸烟。
单元新词
smoke
吸烟
例句 You mustn't swim here.
你必须不能在这里游泳。
单元新词
must
必须
例句 Don't play with matches.
不要玩火柴。
单元新词
match
火柴
We must be careful with fire. 我们必须小心火。
We mustn’t play with matches. 我们不能玩火柴.
（1）must 是情态动词，意为“必须”，后跟动词原形。问句是直接将 must 提到句首，其肯定回答为“Yes, you must.”；否定回答为“No,you needn't.”或“No, you don't have to.”。
例：
You must listen to the teacher carefully.
你必须认真听老师讲课。
知识讲解
We must be careful with fire. 我们必须小心火。
We mustn’t play with matches. 我们不能玩火柴.
（2）mustn't=must not，是 must 的否定形式，表示“禁止，不许”。
（3）fire 在此处意为“火”，是不可数名词。fire 还可以表示具体意 义上的“火灾”，此时是可数名词。
例：
It's dangerous to play with fire. 玩火很危险。
There were three fires in this city last month.
上个月，这个城市发生了三起火灾。
知识讲解
What mustn’t we do in the forest or at home?
我们在森林里或家里绝对不能做什么？
句型“What must/mustn't we do（+ 地点状语）？”用于询问（在某地）什么事情我们必须做或不能做。
例
What must we do at school？
我们在学校必须做什么？
知识讲解
Listen and say
Look, ask and answer.
In the forest
At home
Listen and say
Look, ask and answer.
·smoke
·play with matches
·play near fires
What mustn't we do ... ?
We mustn't ...
课堂回顾
Don't smoke!
Don't play with matches!
课堂回顾
Fire can burn down a lot of trees. It can hurt people too. We must be careful with fire.
课堂回顾
Children, what do you know about fire safety? What mustn't we do in the forest or at home?
We mustn't smoke in the forest.
We mustn't play near fires at home.
We mustn't play with matches at home.
Very good. Safety first.
随堂练习
单项选择。
1.We mustn't play ______ matches ______ home.
A. with; in B. with; at C. and; at
2. When you see a fire, you ____ go outside quickly. You ___use the lift.
A. must; mustn't B. must; must C. mustn't; mustn't
3. I like the meat. It ______.
A. taste good B. tastes good C. tastes bad
随堂练习
单项选择。
4. ______ smoke in the forest.
A. don't B. Do C. Don't
5. Fire can burn ______ a lot of trees.
A. up B. down C. with
6.We must be careful ______ fire.
A. with B. to C. under
课后作业
1. 抄写新单词两遍。
2. 熟读课文。