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三、教学过程
Step1 Warm up
Free talk
Enjoy a song.
Q: What makes the park dirty in the song?
T: What is dirty in the city?
S: The air, the street, the river.
T: What makes dirty in our city?
S1: Smoke makes the air dirty.
S2: Rubbish makes the streets dirty.
S3: Rubbish makes the rivers dirty.
Step 2 Grammar time
Grammar One
Show the sentences. Students read and find the rules.
Practice
Show the map of Nanjing. There are some problems in our city.
dirty, messy, smelly, crowded, noisy
A: What makes the…?
B: …makes…
Let’s talk
In winter, there is always bad weather. (Show the pictures)
What makes the weather like this?
Smoke+ fog ( smog
Read and answer: What makes the smog heavy?
Coal makes the smog heavy.
Smoke from cars makes the smog heavy.
Q: What can we do on these days?
(阅读以上建议，选取一条，推荐给你的同学。你可以提出更好的建议。)
We can drink some tea.
We can close the window.