老师：Hello everyone, welcome to my class. Today we are going to learn you need to top you one. Pollution has caused too many problems. Session B, 1, a, 2,3, b. By the end of this class, you will hopefully be able to 1st, understand and identify the new words and expressions. 2Nd, use the following expressions to talk about causes and harms of pollution. 3Rd, promote the awareness of environmental Protection.
老师：Now let's begin our class. One year ago, Kang Kang went to draw pictures near his house. What they can control. Now let's watch the video and find out the answer.
老师：From the video, we can see that in Kangkang's picture, there were some factories producing waste gas. Produce means to make, let's read after it.
学生：Produce.
老师：The environment there is really awful. Awful means something is really bad. Let's reduct it. Awful. So Kangkang couldn't bear the environment there. He decided to go home. After going home, he read a newspaper. What did concounter from the newspaper? Now let's see it together.
老师：So what did Kang Kang learn about? Yes, the harms of air pollution. Air pollution causes some breathing problems and even cancer, freezing problems. Who she wanted, phrase is a verb. Who she, for example, I open the window to breathe fresh air.
老师：我们来看一下它的同根词breath，这是一个名词，表示一次吸入的空气。 for example take a deep breath 深呼吸。要特别注意的是，动词 breeze 末尾多了一个不发音的e，两个单词的发音也不同。 breeze 的 e a 发 ETH 发呜，而 breast EA 发 TH 发嘶 now please read up to them。
学生：breathe。
老师：breath so air pollution is harmful to our health。
老师：harmful 由名词 harm 加形容词的后缀 for 而来，表示有害的。
老师：Be harmful too means be bad for or do harm to. So we can also say air pollution does harm to our health. Besides air pollution, there are still many kinds of pollution such as soil pollution, soil Tushang Tudi, soil pollution, and water pollution, noise pollution, air pollution, litter and light pollution. Now please follow and read the words and phrases paying attention to the cells and stress.
学生：Soil pollution, water pollution, noise pollution, air pollution.
学生：Litter, light pollution.
老师：How do those kinds of pollution do harm to us? Let's complete the sentences with the words and phrases in 3 a and find out. For example, people use chemicals too much in their fields and soil pollution causes unhealthy food.
老师：现在，请同学们按下暂停键，完成下列填空，now， lets check your answers quite easy， right i believe you have done well pay attention to this phrase make a mess off。把什么弄得一团糟？
老师：for example， my little brother always makes a mess of the room。
老师：我的弟弟总是把房间弄得一团糟。 now 来。
老师：Let's read the sentences aloud. Pay special attention to the pronunciation, liaison and pause. Well done. As we know, pollution is harmful to our health and environment. So what's the situation near Kangkang's house now? Does it
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