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dig
serious
breadfruit
reduce
turn off
recycle
cause
wise
v. 挖洞、沟等
adj. 认真的，严肃的
n.面包果
v.减少；降低
关上开关
v.回收利用，循环利用
v. 导致，造成
adj. 明智的
Read and speak out the Chinese immediately.
Words and expressions
What was the earth like before?
[pr?'tekt] 保护
Comic strip & Welcome to the unit
Living a green life is important!
What should we do to live a green life?
take shorter showers
We can take shorter showers to save water.
节约水
Presentation
We can save energy by turning off the lights
when we leave a room.
What should we do to live a green life?