Step 1情景导入
T:Do you know “3r”?
Ss:No, we don\'t. Can you tell me?
T:Of course. “3r” means reduce, reuse and recycle.
S1:What does “reuse” mean?
T:It means that we use again the things that we have used.
S2:What about “reduce”?
T:It means that we try to use it less.
Ss:Oh, we see. Are reducing, reusing and recycling good for the environment?
T:You are right. You are clever. Do you know how green you are? Today you will know it after finishing Unit 2. Let\'s begin to study Unit 2.
