资源简介

(共22张PPT)
外研版九年级上册
A fine balance
Understanding ideas (2)
Unit 5
Learning objectives
1.归纳并掌握that、which引导定语从句的位置、成分功能及省略规则；
2.运用 that、which 完成句子连接和语篇填空，并在语境中正确使用定语从句；
3.结合漫画，描述人类活动对自然的影响，增强人与自然和谐共生的意识。
通过本节课的学习，学生能够：
重点
重点
She was a kind person __________________________.
She was a brave soldier _________________________.
She was a hero ________________________________.
Do you remember Zhao Yiman from the previous unit
who never gave in
Let’s review
who always thought of others
who will live forever in our hearts
who
refers to __________________.
introduces ______________________ to give more information about the person
acts as _______________ in these sentences.
people
an attributive clause
the subject
A clause introduced by who gives more information about a person. How can we give more information about things
Observe and find
What do “that” and “which” refer to
Streets, beaches and parks that are usually full of people remain empty.
The natural wonders which have been hidden by pollution for years appear again.
Compare with what we learned Antecedent Relative pronoun
People
Things
which / that
The writer that I like best is Mark Twain.
who / that
Observe and summarise
Observe the two clauses and summarise the grammar rules.
The natural wonders which have been hidden by pollution for years appear again.
Streets, beaches and parks that are usually full of people remain empty.
1. What comes after that / which
Verbs.
2. What is the function of that / which in each clause
They are the subjects of the clauses.
3. Can we leave them out
No.
Rule 1: When that / which acts as the subject, it cannot be left out.
Read and find
Now find more sentences with these structures in the reading passage.
Forests take back the space that humans now live in.
Perhaps we should remember the wise words which Montaigneonce wrote - let us permit nature to have her way.
A Forests take back the space that humans now live in.
B Perhaps we should remember the wise words which Montaigneonce wrote...
A B
Subject
Verb
that / which
Montaigne
humans
wrote
live
object of in
object of wrote
What do “that” and “which” refer to
Observe and summarise
Rule 2: When that / which acts as the object, it can usually be left out.
Forests take back the space that humans now live in.
Perhaps we should remember the wise words which Montaigne once wrote...
Can we leave out that / which
Forests take back the space humans now live in.
Perhaps we should remember the wise words Montaigne once wrote...
Observe and summarise
Let’s summarise
Fill in the blanks and summarise the rules.
who that
which that
cannot be left out
can usually be left out
Connect the sentences with that or which.
Air pollution is a problem that/which affects everyone.
Some organisations that / which harm the environment should be punished.
1 Air pollution is a problem. Air pollution affects everyone.
2 Some organisations harm the environment. These organisations should be punished.
Read and connect
Can we leave out “that / which” in these sentences
No. They are the subjects of the attributive clauses.
Save the oceans
The oceans are in trouble.
Sea animals 1 __________ can’t live with higher temperatures are suffering from global warming. Pollution from land is also hurting the oceans. About 80% of ocean pollution comes from land! And overfishing is making many animals 2 __________ live in the sea disappear.
For people 3 __________ are worried about the oceans, there are a lot of things
4 __________ we can do. First, we should use green energy. Second, we should stop throwing rubbish into the oceans. Finally, we should stop overfishing.
There is no time to waste. We must act NOW, or we will only see sea animals in museums.
that/which
that/which
that/which
/省略
who/that
Complete the webpage using that, which or who.
Read and complete
1. According to the text, what problems are the oceans facing
The oceans are facing global warming, pollution from land and overfishing.
2. What does the writer suggest doing
The writer suggests using green energy, stopping throwing rubbish into the oceans and stopping overfishing.
3. Can you think of any other ways to save the oceans
refuse
plastic
clean up
reusable
made from
Read and answer
From the webpage “Save the oceans”, how do humans influence
nature
Look at the cartoons. What human actions and effects can you see
Global warming
Deforestation
Water shortage
Factories that let out greenhouse gases are heating up the earth.
use too much water
waste
look worried
tap
cut down trees
destroy forests
home to animals
battery
run low...
Look and answer
A: What does the first cartoon mean
B: Look, factories that let out greenhouse gases are heating up the earth. Because of that, animals like penguins and polar bears are losing their homes.
A: That’s terrible. We should take action. For example, we should use more green energy.
B: I agree. We need to think more about nature.
Listen and find out how the speakers discuss the cartoons.
Listen and learn
describe the human activity
explain its effect
give suggestions
Work in pairs. Choose one of the cartoons and discuss its meaning. Use the words and expressions from the reading passage and the Useful expressions to help you.
Useful sentence patterns
The rapid development of human society has made us...
What would happen to... if..
... are suffering from...
We need to think more about...
It is no surprise that...
What a(n)... thing to think about!
Let’s talk
Useful phrases
- let out greenhouse gases
- heat up the earth
- waste water
- cut down trees
- pollute the environment
- lose their homes
- use green energy
- save water
- plant more trees
- protect wild animals
Let’s share
Share your conversation with the class.
Let’s check
Criteria（评价标准） Stars（1-5）
1. Describes human activities clearly. ★★★★★
2. Explains their effects on nature. ★★★★★
3. Gives reasonable suggestions. ★★★★★
4. Uses key words and useful expressions. ★★★★★
5. Uses attributive clauses with that / which correctly. ★★★★★
Check your classmates’ performance and rate their presentation.
一、用that/which/who填空完成句子。
1. The river _________ runs through our city is badly polluted.
2. The girl ________ is giving out leaflets is my classmate.
3. The natural wonders _________ have been hidden by pollution appear again.
4. Sea animals _________ live in warm water are in great danger.
5. The plastic bags __________ people throw into the sea harm sea animals.
which/that
who/that
which/that
which/that
which / that
（可省略）
Exercises
二、用that/which/who把每组两个句子合并为一句。
1. The sea animals are in danger. People often catch them for food.
→
2. Plastic bags are not easy to break down. They pollute the sea.
→
3. The city park is near our school. It was cleaned up last Sunday.
→
4. The volunteer helped us clean the beach. We met her yesterday.
→
The sea animals (which / that) people often catch for food are in danger.
Plastic bags that/which are not easy to break down pollute the sea.
The city park that/which is near our school was cleaned up last Sunday.
The volunteer (who / that) we met yesterday helped us clean the beach.
Exercises
1
Relative pronouns
Summary
Can they be left out
2
What have we learned today
People → who / that
Things → which / that
Subject → No
Object → Yes, usually
Write 4 sentences about protecting nature, using who, which or that.
Homework
Unit 5
外研版九年级上册
Thank you!

展开更多......

收起↑