资源简介

(共16张PPT)
（外研版）七年级
上
Understanding ideas
The power of plants
Unit 5
After this class, we will be able to:
1. describe plants using the vocabulary and expressions in this part.
2. read a passage to learn how plants work.
3. understand the importance of plants in the natural world.
Learning objectives
1. What’s the video mainly about
2. What parts do plants have
The parts of plants.
Root(根)and shoot(枝) (stem(茎), leaves, flowers and fruits.)
Warming-up
sugar
sunlight
water
What can you see in the picture
A plant.
Do you know the names of its parts
leaf
stem
root
Pre-reading
/stem/
/ru t/
sugar
sunlight
water
sunlight
sugar
water
Look at the picture and try to match the words to it.
1
Pre-reading
sunlight
sugar
water
Now, let's read to check your answers.
Pre-reading
What’s the picture about
The picture is about photosynthesis.
(光合作用)
It happens within a plant.
/ f t s nθ s s/
Where can we read this passage
A. In a newspaper.
B. In a diary.
C. In a science magazine.
While-reading
Task 1 Read and choose.
While-reading
Task 2 Read and match.
A
The products are sugar and oxygen.
C
The process of the work in the Leaf.
D
Plants are important.
B
The day gets dark. Workers will take a rest.
E
Worker No.55 is going to start work.
E
C
A
B
D
Task 3 Read para. 1 and answer.
1. When do workers start work in the plant
At a quarter past seven.
2. Are there any real workers in the plant
No, there aren’t.
3. Why does the writer use “workers” in the passage
To make the passage more vivid(生动的) and easier for the readers to understand.
拟人(personification)是一种常见的写作手法，是将人类的特征、情感或行为等赋予非人类(如动物、物体、概念、自然现象等)。拟人能够使文章更加生动形象、主题突出，从而能引起读者更强的共鸣和更深的思考。
While-reading
Read para2-3 and complete.
leaf
rise up
Water
sugar
breathe
Photosynthesis
光合作用
While-reading
Task 4 Read para. 4 and answer.
When will the workers take a rest
They will take a rest at night.
At night, they only perform respiration(呼吸作用).
While-reading
/ resp re n/
Task 5 Read para. 5 and answer.
What does the writer think of plants
They give _________ food and oxygen to people. They are ___________ to animals and people.
more than
important
While-reading
√
Post-reading
Choose another suitable title and give your reasons.
3
/ su t bl/ 合适的
Tip: Pay attetion to the picture and key words.
Post-reading
Do they have the same meaning
What does “plant” mean in the title
The word “plant” has two meanings. The left one is about the place the workers work in. The right one is about the living thing.
Think and share.
In what other ways do plants help the world
Think and share.
Plants clean the air and help stop floods. They provide homes for animals and reduce the effect of climate change.
Post-reading
Write a short paragraph about how plants work and how they help people and animals.
Homework

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