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What can you see in the street?
What do you think of the street?
It’s dirty and messy.（肮脏的，乱七八糟的）
What makes the streets messy and dirty?
Rubbish makes the streets messy and dirty.
What makes the air dirty?
Where is the smoke from?
What makes the air dirty?
Where is the smoke from?
Let’s read
Who are in the passage? （ ）
A. Miss Li and her students.
B. Mr Green and his students.
2. What’s the title of this passage? （ ）
A. Our school is dirty.
B. Our city is dirty.
Watch and choose
A
B
What makes our city dirty?
自读课文第一部分,边读边将重点句划出来。
Read and find:
Ask and answer
1. Is the city clean?
2. What makes the air dirty?
3. What makes the streets messy and dirty?
4. Is the river dirty?
No, it isn’t.
Smoke from cars and factories makes the air dirty.
Rubbish makes the streets messy and dirty.