1)添加修饰成分使文章更丰满。 (运用更富内涵的词，短语或句型） 2)变换更高级和丰富的句式。如：定语从句，独立主格结构，非谓语等
2. 补加语句: Specific examples，Causes/ purposes， results/meaning，Ways/conditions
1)列举实例来补充说明。 2）增加心理描写及背景渲染。 3）结尾发挥，写你的感受，评价，愿望，倡议等。
Discuss the principles
1.which information should be extended(哪些信息需要扩展)
2. from what aspects to extend the details(从哪方面扩展)
3. extend effective details (有效扩展) 4. know the logic of the details(逻辑性)
3. 增添过渡：如， besides, meanwhile，in brief, on the contrary, as a result , on condition that…
Instance exercise:
（2018 全国卷I） 假定你是李华,你的新西兰朋友Terry将去
中国朋友家做客,发邮件向你询问有关习俗。 请你回复邮件,内容包括： 1.到达时间2.合适的礼物3.餐桌礼仪 注意:1.词数100左右；
2.可以适当增加细节,以使行文连贯。
Apply the rules to writing!
Dear Terry, How are you doing? In your last letter, you asked me about being a guest to a Chinese friend’s home. Now, I am writing to inform you of some relevant details. To begin with, according to our tradition, you are supposed to arrive early, so that you can help the family prepare the dinner, which is meaningful and interesting. Besides, you’d better bring some gifts, like a book or a Chinese knot. What’s more, when you are enjoying the meal, you need to avoid making noises while chewing food. Hopefully, these suggestions would be helpful for you. I have the confidence that you will have a great time. Best wishes!
