老师：Hello, boys and girls. I'm Tammy. Do you remember me? Yes, I'm your old friend. Nice to see you. Today we are going to learn Unit 4, seeing the doctor. Now, boys and girls, this is our learning aims. Let's have a look. Okay.
老师：Okay, boys and girls. Now let's begin our class. First, look, please guess. Is this a man or a woman? Yes, this is a man. So what's wrong with the man? Okay, he has a cough now. Next, let's guess.
老师：Yes, I think this is a woman. So what's wrong with the woman? Oh, she has a headache, right? Next, this is a man, I think. Do you think? So? What's wrong with the man? Yes, he has a toothache, I write. Okay, the last one, let's have a look. Oh, what's wrong with the man? Yes, he has a fever.
老师：Now, boys and girls, what should they do? Yes, they should see the doctor. Doctors can help them, right? Yes. Now, look, who's this boy? He is your old friend, Liu Tao. Yes. Is Liu Tao happy? No. What's wrong with Liu Tao? Maybe he has a headache. Maybe he has a cold. Yes. Maybe he's ill right now, let's have a look. Look at this picture. What's this? Let me tell you. This is a thermometer. What's Liu Tao's temperature? A or b? Now, this time, let's listen. Then tell me. A or B. Okay.
学生：You have a fever. Your temperature is 102 degrees Fahrenheit. 102. It's 39 degrees centigrade.
老师：Okay? Now, boys and girls, what's Liu Tao's temperature? A or B? Yes, we choose a. So do you know what's wrong with Liu Tao? Let me tell you. He has a fever. Why? Look, because 102 degrees Fahrenheit equals 39 degrees centigrade. Now, boys and girls, read after me. Okay? Temperature, temperature, temperature. Look at the circle. We call the circle degree, degree, degree. Now look here, F means Fahrenheit, Fahrenheit, Fahrenheit. Here, C means centigrade, centigrade, centigrade, 1:02. We call it 102,102,102. Do you know? Okay, this time, please read after me. Okay? Your temperature is 102 degrees Fahrenheit. 102. It's 39 degrees centigrade. Okay, boys and girls, it's your turn. You can read it by yourselves.
老师：So, are you clear? 102 degrees Fahrenheit equals 39 degrees centigrade. Okay? Now boys and girls, this time centigrade. Please listen. Sound knowledge. Centigrade and Fahrenheit. Let's go on listening. Centigrade and Fahrenheit are both scales to measure temperature. They were discovered by different scientists. Santa Grade was named by the Swedish astronomer Andres Celsius in 1954. Fahrenheit was developed by a German physicist, Daniel Gabriel Fahrenheit in 1724.
老师：They are used in different countries. Most countries in the world use centigrade such as China, Japan, and so on. Fahrenheit is only used in the US and some other countries such as the UK, Canada, and so on. They can be converted by the above formulas. Okay? Now, boys and
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