老师
Hello everyone, welcome to my class. Today we are going to learn Unit 2, topic one, pollution has caused too many problems, section A. Hopefully after today's lesson you will be able to first use the new words and expressions to describe the environment. Second, use the simple past tense and the present perfect tense properly to make comparison. Third, be aware of the importance of environmental Protection. Let's get started.
老师
Last year an unusual friend came to Zhangzhou for a visit. Do you know who he is? He's an Oriental stock or Dongfang Bai guan. In Chinese. Let's just call him Orion for short. As the national first class animal, this kind of bird is very rare. Every year he flies to the south for winter. Let's follow Orian's footprint to see what has happened around us.
老师
让我们追寻东方白冠的足迹，来看看我们的周围都发生了什么。
老师
Some years ago, when he flew over the sky of Zhang Zhou, he wouldn't stay because it was a mass. And we can also say several years ago, several. But now what has happene查看隐藏内容