主旨段
主旨段是全文表情达意最重要的一段，因此内容应该很详实。主要分两步走。
第一步：围绕主题，进一步阐述图片中关于主题所表现出的两个or三个方面。
A、After carefully thinking and reflection , we come to understand the enlightening picture step by step . I believe that this thought-provoking picture conveys two layers of meanings. For one thing 方面1-SVO. For another 方面2-SVO. This simple picture wakes up the whole of the society.
B、Having scrutinized the details of the pictures, we can discuss the implications subtly conveyed from it. For one thing 方面1-SVO. For another 方面2-SVO.This simple picture wakes up the whole of the society.
第二步：围绕主题，进一步阐述图片中出现的现象的两个原因。
方面。
A、There are several driving forces this trend/phenomenon. The main reason is no other than that 原因1-SVO .What’s more,原因2-SVO.原因3-SVO also plays a role in this case.
B、To account for the above mentioned phenomenon (issue, tendency) various reasons (causes) have been put forward. In the very beginning 原因1-SVO.And then 原因2-SVO.What is more, last but 原因2-SVO.
