老师：hello， boys and girls im miss lee nice to see you here today， we continue to talk about unit three animal world please get ready of your book and your pen。
老师：本节课的主题是 animal groups and features。在这节课中，我们将一起阅读关于动物种类及其基本特征的语篇，然后通过学习，同学们能够判断某种动物的种类并说明理由。
老师：hey class i know you can name a lot of。 Animals now, but how many known species of animals are there in the world today? Have a guess. Well, the answer is 1.5 million. That's really a large number, right? But how do we classify animals? Animal kingdom can be divided into two main groups. One is the vertebrates, which means animals of this kind are with backbones. And the other kind is the invertebrates, which contains animals without backbones. And for vertebrates, there are five groups of animals. What are they? Think about it. Well, for vertebrates, there are mammals, fish, birds, amphibians and reptiles. And for invertebrates, there are insects and many others, like jellyfish, snails, starfish and so on. What do you know about these animals? Let's listen to what some of my students say.
学生：Mammals have hair. Mothers feed milk to babies.
学生：Birds have two wings. They can fly. Mother's lay eggs.
学生：Reptiles have four legs. They are cold blooded animals.
学生：Fish have fins. They live in water.
老师：Mothers lay eggs.
学生：Insects have wings and many legs and most of them can fly. Amphibians have wet skin. They live on land and in water.
老师：Good try. I really like your answers. Look, here is a chart for you. What are the main features of these kinds of animals? Now first, let's read the text. You can take out your chart and take some notes. Here we go.
学生：Mammals. Mammals have warm blood. Mammals are covered with hair or fur. Mother mammals feed milk to their babies.
学生：Birds, all birds have feathers. All birds have two wings. Mother birds lay eggs.
学生：Reptiles, reptiles have cold blood. All reptiles have scales. Mother reptiles lay eggs. Most reptiles have four legs. A snake is a reptile with no legs.
学生：Insects, all insects have six legs. Mother insects lay eggs. Most insects can fly. Most insects have wings.
学生：Amphibians, amphibians have moist skin. Amphibians live on land and in water. Mother amphibians laid eggs. Fish, fish have cold blood. Fish have fins. Fish use skills to breathe. Fish spend their whole life in water.
老师：Okay, you must have taken some notes. Now let's learn about them together. Look at the picture. There are two bears. What kind of animals are bears? Yes, bears are mammals. And mammals have warm blood. What's the meaning of having warm blood? It means that the body temperature of this kind of animal stays almost the same, whether it is cold or hot. See, the body temperature of the bear nearly change whether it is in winter or in summer. Besides be
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