舉例、比較、換言--四級作文主體段落三大殺手锏

　　一、舉實例

　　In order to attract more customers, advertisers have adopted every possible stimulative factor in making ads, such as sound, light, colours, cartoon films and human performance. For instance, to advertise a certain food, advertisers will ask an actor or actress to sit at a table and devour the seemingly delicious food while they film him or her.

　　二、做比較

　　方法：寫完一個要點，比較與之相似的；又寫完一個要點，再比較與之相反的；

　　相似的比較：in comparison, likewise, similarly, in the same manner

　　相反的比較：on the other hand, conversely, whereas, while, instead, nevertheless, in contrast, on the contrary, compared with ,

　　三、換言之

　　I am enthusiastic about you. That is to say, I love you.

　　I am wild about you. In other words, I have fallen in love with you.

　　結尾

　　結尾需要靈活創造。一般的習慣是，一些記敘文和描寫文經常采用自然結尾的方法；但說理性和邏輯性較強的說明文和議論文則往往都有結束語，以便使文章首尾呼應，結構完整。