请认真阅读下述材料，并按要求作答[图1]请根据上述材料完成下列任务：
简要分析上述文本的语言知识重点、难点。
Key points:Words: The meaning and the pronunciation of the words such as “light, heavy, big, small...”.Target language: “It’s heavy/small/big and light...”.Difficult Points:How to give suggestions when shopping and describe things’ feature by using the correct sentence structure “It is…”.
