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【设计意图】让孩子们在刚开始上课前利用自由交流，复习前两节课的句型Do you have a/any...和Does ...have...?一般疑问句，简单的课堂中的交流，为学习新知做好铺垫。
Step2 Revision
1. Do they have animal friends?
复习Nancy’s animal friend and Mike’s animal
2. T: I have an animal friend too.
This is my animal friend. He is brown and he is fat. He has two big and round(圆的) eyes. He has a small nose and a big mouth. He has four short legs, but he can run fast(快的). He also has a short tail. He likes sleeping very much. I love my animal friend.
Do you love your animal friends?
Ss: …
T: Animals are our friends. We should love and protect them.
【设计意图】复习课文内容，帮助学生进一步掌握本单元的句型，顺便对学生进行情感教育，引导学生热爱和保护我们的动物朋友。
Step3 Presentation and practice
Cartoon time
Let’s watch
T: Today, we will meet a new friend. Let’s watch the cartoon and find out who is the new friend.
S: 螃蟹.
Teach: crab.
T: Can you describe it? (师提示从颜色，体型等方面描述)
2. Let’s read
Listen to the radio carefully and answer the following questions.
How many legs does the crab have?
How many arms does the crab have?
3. Let’s find
阅读故事，理解大意。教师安排学生阅读故事，画出含有It has ....，让学生有目的地阅读故事。
Say the sentences with” It has ...”
It has ten legs.
It has eight legs.
It has big arms.
It has a big body too.
4. Think and circle
Sam isn’t happy at last. Why?