一、 长短句原则

As a creature, I eat; as a man, I read. Although one action is to meet the primary need of my body and the other is to satisfy the intellectual need of mind, they are in a way quite similar.

强烈建议：在文章第一段(开头)用一长一短，且先长后短;在文章主体部分，要先用一个短句解释主要意思，然后在阐述几个要点的时候采用先短后长的句群形式，定会让主体部分妙笔生辉!文章结尾一般用一长一短就可以了。

二、 主题句原则

To begin with, you must work hard at your lessons and be fully prepared before the exam(主题句). Without sufficient preparation, you can hardly expect to answer all the questions correctly.

三、 一二三原则

1)to begin with, then, furthermore, finally(强烈推荐)

2)to start with, next, in addition, finally(强烈推荐)

3)first and foremost, besides, last but not least(强烈推荐)

4)most important of all, moreover, finally

5)on the one hand, on the other hand(适用于两点的情况)

6)for one thing, for another thing(适用于两点的情况)

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