lesson 13 lesson 13 刘青 unit 4 前门外国语学校 刘青 lesson 13
DESCRIPTION
Word puzzle 1. It is an oven and it uses neither the coal nor the gas to heat food. And it’s very clean and convenient. It can heat or cook many meals in a short time. microovenwaveTRANSCRIPT
lesson 13 Lesson 13
Lesson 13
刘青
Unit 4
前门外国语学校刘青
Lesson 13
Discussion1.What’s this?
2.What is it used for?
An oven
3. What does it use to cook meals?
It’s used for cooking.
It uses the coal.
Word puzzle1. It is an oven and it uses neither the coal nor
the gas to heat food. And it’s very clean and convenient. It can heat or cook many meals in a short time.
micro ovenwave
How to use the microwave oven ? First, he places__________ in the ove
n. Second, he programs________ for the correct time and then he switches on_______. In just a few minutes, the oven heats _______and then he takes _________ out of the oven and he can serve________.
the food
the foodthe food
the oven
the oventhe food
First, _______is placed in the oven. Second, ________is programmed for the correct time and then______ is switched on. In just a few minutes, ______is heated and then ______is taken out of the oven and _______is served.
How to use the microwave oven ?
the oven
the food
the food
the food the food
the oven
Words and expression:a) place 炉子b) coal 打开开关c) program 放置d) switch on 煤e) oven 服务f) microwave 设置g) serve 微波
Read and discuss:1. What do microwave ovens use to heat food?
2. Why do microwave ovens work quickly?
3. What kind of plates do we often use?
4. Why doesn’t the plate get hot after heating?
Microwave ovens use microwaves to heat food.
Because all the food is heated at the same time.
Because microwaves are absorbed by the foodbut they are not absorbed by things like plastic or glass.
We often use plastic or glass plates.
True or False:1. In a microwave oven, the microwave are
absorbed by the food. 2. When the microwave are absorbed, they are
turned into heat.3. Microwaves are absorbed by things like
glass and plastic.4. In a microwave oven, the outside of the food
is cooked first, then the inside.
T
T
F
F
Finish the diagram in 1.2The food is placed in the oven
The ovenis programmed
is heated
is switched on
The food is taken out
for the correct time
is served on the table
of the oven
in the oven
is placed
is programmed
The microwaves
are absorbed
by the food
are turned into
heat
The food
is heated
at the same time
The microwaves
are absorbed
by the food
are not absorbed
by things like plastic or glass
A B
C
be+ 动词的过去分词 (passive voice)__be used by sb__be used for doing sth.__be placed in/on places__be programmed for some time__be programmed at certain time__be switched on__be absorbed by sb./ sth__be taken out of some places__be turned into sth.
f. 被某人使用
c. 被放在某地
a. 被设定在某个时间
i. 开关被打开
e. 被某人 / 某物吸收 d. 被从某地拿出 b. 被变成某物
g. 被设定成多长时间 h. 被用做干某事
a
b
c
de
f
g
h
i
1. The clock________________12:00.
1.The gun ___________policemen.
2. The gun _____________ shooting.(use)
2. The clock _______________5 minutes.
(program)
is used by
is used for
is programmed at
is programmed for
(place)
（ absorb ）1. The books ______________on the shelf.
2. The sunshine _______________by the tree.
are placed
is absorbed
1. The milk ______________the fridge. (take out of)
2. The wind _________________ the power. ( turn into)
is taken out of
is turned into
Group work:
a machine for doing homework a machine for making breakfast
In groups, design, draw and describe a new invention, use the phrases in the textbook.
_______________________________________________
_______________________________________________
_______________________________________________
It is like … ， it’s used for doing
