形容词
1. There is no essential difference between the two drafts.
两份草稿没有本质上的不同。
2. Hard work is essential to success.
成功必须努力工作。
3. Food is essential to life.
食物是维持生命不可或缺的。
名词
1. The book deals with the essentials of English grammar.
这本书论述英语语法的要点。
2. Our course deals with the essentials of management.
我们的课程讲述管理的基本要点。