essential的音標為[??sen?l]，基本翻譯為“基本的，最重要的；本質的”，速記技巧為“e”發[i?]音，s發[s]音，l發[?]音。

Essential這個詞的詞源可以追溯到拉丁語和希臘語，意為“基本的，必要的”。它的變化形式有形容詞（essential）、副詞（essentially）和名詞（essence）。

相關單詞：

1. Inessential：這個詞是由essential派生出的形容詞，意為“不重要的，非本質的”。例如，“This is an inessential detail, but it adds to the overall picture.”

2. Essence：這個詞的含義包括“本質，實質”，例如“The essence of a problem is often found in its root cause.”

3. Essentialism：這個詞是一個名詞，意為“基本主義，基本主義觀點”，它強調對事物本質的理解和追求。

在英語中，essential這個詞的使用非常廣泛，可以用于描述事物的本質、重要性、必要性等。例如，“This is an essential part of the process that cannot be ignored.”此外，這個詞也經常用于描述人的性格、品質等，例如，“He is an essential person who embodies the core values of our company.”

以上內容僅供參考，建議根據實際使用情況來選擇使用。

常用短語：

1. essential to（對...是至關重要的）

例句：Reading is essential to academic success. 閱讀對于學術成功至關重要。

2. essential elements（必不可少的要素）

例句：The essential elements of a good meal are fresh ingredients and love. 一頓好菜必不可少的要素是新鮮的食材和愛心。

3. essential qualities（必不可少的品質）

例句：The essential qualities of a leader are courage, integrity, and compassion. 領導者的必不可少的品質是勇氣、正直和同情心。

4. in essence（本質上）

例句：In essence, we are all connected by the same human spirit. 本質上，我們都是被同樣的人類精神所連接的。

5. essential knowledge（必不可少的知識）

例句：The essential knowledge for success in business is effective communication. 在商業中取得成功必不可少的知道是有效的溝通。

6. essential services（必不可少的服務）

例句：The essential services provided by the government are education and healthcare. 政府提供的必不可少的服務是教育和醫療保健。

7. essential for（對...必不可少）

例句：Sleep is essential for physical and mental health. 睡眠對身心健康必不可少。

英文小作文：

The Essence of Life

Life is a beautiful journey filled with ups and downs, challenges and opportunities. Although we encounter many obstacles along the way, there are some essential things that we cannot do without. Firstly, health is the most precious asset we have. Without good health, we cannot pursue our dreams or enjoy life to the fullest. Secondly, education is crucial for personal development and success. It opens our minds to new ideas and helps us acquire the skills we need to navigate through life"s challenges. Thirdly, meaningful relationships are essential for happiness and well-being. Having supportive friends and family who care about us can make a huge difference in our lives. Finally, having a sense of purpose and meaning in our lives is crucial. Knowing what we want to achieve and why we exist gives us a sense of direction and motivation in times of struggle. In essence, these are the essential things that make life worth living. Without them, we would be lost and empty. Therefore, it is important to prioritize them and make sure they remain a part of our daily lives.