grown-up的音標是[ɡra?n-?p]，基本翻譯是“成年人；長大的人”。速記技巧是：可以聯想到grow（生長）這個單詞，-up表示向上，所以grown-up可以理解為已經長成的人。

Grown-up這個詞的詞源可以追溯到古英語，它是由兩個詞組成的，一個是grow（生長，發育），另一個是up（向上）。這個詞的意思是“成年人，長大的人”。

變化形式：在英語中，grown-up的形式是名詞，沒有明確的過去式、過去分詞、現在分詞、復數形式或第三人稱單數形式。

相關單詞：

1. Adult：這個詞也是由兩個詞組成的，ad（to）和ult（ultimate，最終）組成，表示成年人。這個詞在英語中非常常見，可以指任何年齡在成年標準以上的人。

2. Maturity：這個詞來源于拉丁語，意思是“成熟”，在英語中通常用來形容人的成熟和穩重。

3. Matron：這個詞來源于拉丁語，意思是“成年女性”，通常用來形容成年女性，尤其是那些有成熟魅力的女性。

4. Grown-up child：這個短語用來形容已經長大的孩子。

5. Grown-up responsibility：這個短語用來形容成年人應該承擔的責任。

6. Grown-up world：這個短語用來形容成年人的世界，通常與成熟和責任有關。

7. Upbringing：這個詞來源于古英語，意思是“成長的過程”，通常用來形容一個人成年前的成長環境。

8. Adult child：這個單詞用來形容成年人的孩子。

9. Grown-up issues：這個短語用來形容成年人面臨的復雜問題。

10. Grown-up decision：這個短語用來形容需要成年人做出決策的情況。

以上這些單詞和短語都與grown-up這個詞有關，描述了成年人生活的各個方面。

常用短語：

1. grown-up world

2. become a grown-up

3. grow up

4. adulthood

5. responsible for oneself

6. take care of oneself

7. adulthood responsibilities

例句：

1. I"m ready to enter the grown-up world.

2. She grew up to be a strong and independent woman.

3. He"s finally reached adulthood and is able to take care of himself.

4. As we grow up, we must learn to take responsibility for our own actions.

5. It"s time to start taking adulthood responsibilities.

6. She had to learn to take care of herself as a single mother.

7. We all have to grow up and face the responsibilities of adulthood sooner or later.

英文小作文：

Growing up is a challenging and exciting process, filled with both joy and challenges. As we grow up, we learn to take responsibility for ourselves, make our own decisions, and face the responsibilities of adulthood, such as paying bills, managing our own finances, and taking care of our own physical and emotional well-being. At the same time, we also gain independence, freedom, and the opportunity to pursue our dreams and goals. However, growing up also means saying goodbye to childhood and the safety net of parents" support, which can be both frightening and exhilarating. Despite the challenges, I believe that growing up is worth it because it allows us to become more self-reliant, confident, and capable individuals who can make a difference in the world.