Unit3 At the zoo-Part A Lets talk.Teaching aims: 1.Be able to master the new words: tall,short,fat,thin. 2.Be able to understand ,say and read sentences: Look at. Its so.3.Be able to understand the context in Draw and say.4.Be able to use sentence in life.5.Let students love animals.Key points： 1.Be able to master the new words: tall,short,fat,thin. 2.Be able to understand ,say and read sentences: Look at. Its so.Difficulty points: Be able to use sentence structure in life.Teaching aids: PPT,tape-recorder.Learning methods:listen,look,say and act.Teaching procedures: Step 1 Warming up1.Greeting2.Lets do(Act like a bird .) Step 2 Presentation & Practice1.Brain storming：animals2.Show the picture of a giraffe,teach “tall”“short”3.Show the picture of a monkey,teach “fat”“thin”4.Play a game :act and guess,choose two students to act,the other guess. 5.Listen and answer :Who is tall? Who is short and fat?6.Listen and follow the tape.7.Read the dialogue together,read it group by group.8.Work in pairs and act the dialogue.9.Teach “Look at.”“Its so.”,show many animals and make new sentences.10.Draw and say:let students draw an animal, work in groups of four and talk about their pictures.Then choose some groups to show. Step 3 Summary1. Summarize the words and sentences.2. Summarize the winner.Step 4 Homework1. Listen to the tape and follow it 3 times.2. Talk about the animals with your par