Unit 7How much are these socks?Period 2Teaching aims:1.Key words: black, white, red, green, blue, yellow, long, short, small and big.2.Talk about the prices.3.Listening.Guide 1.Read those words and pick out the words about colors.2.Match these words with the correct colors.3.Read the words in groups.Self check: Describe the pictures.white socksyellow T-shirtBlack bagred shortsblue hatgreen sweaterGuide Find the differences and learn the new words.This hat is_. That hat is_.big smallThis pencil is_. This pencil is_.longshort Guide 2b1.Listen to the conversations and circle the things you hear.2c2.Listen again. Fill in the price tags.The answers to 2a and 2b:green T-shirt black bag red shorts green sweater big blue hat blue and yellow socks8 2 9 7 5 2 当堂检测：Pairwork. Ask and answer questions about the things in 2a.EXAMPLE: A:How much is the big blue hat? B:Its 5 dollors.2e Role-play the conversation Firstly, let the students listen to the conversation and answer the following questions:What dose Mary want?What colour dose she want?How much is each thing?Dose she buy them?Role-play the conversation and then recite it 当堂作业：翻译官。1.多少钱2.红色的毛衣3.黑裤子4.蓝袜子5.白帽子6.-那个白色的包多少钱? -9美元。7.-那些蓝色的袜子多少钱? -3美元。8.这件白毛衣8美元。