by dependent on 的音標是[ba? d??pend?nt ?n] ，基本翻譯是“取決于”。速記技巧是：by可以作為介詞，表示“被……”，dependent on可以理解為“取決于……”。

by 的詞源：

by 是英語中使用頻率非常高的介詞之一，其詞源可以追溯到古英語中的 bite（咬）這個詞。

by 的變化形式：

by 在英語中可以有多種變化形式，包括過去式、過去分詞、現在分詞、復數形式等。其中最常見的形式是 by，它的意思是“通過”、“在旁邊”、“在……旁邊”等。

相關單詞：

1. by chance 偶然

2. by bus 乘公共汽車

3. by mail 郵寄

4. by accident 意外地

5. by law 依法

6. by hand 用手

7. by heart 熟記

8. by mistake 錯誤地

9. by turns 輪流

10. by oneself 單獨地

舉例說明其使用場景和語境：

在日常生活中，我們經常會使用 by 這個介詞來表示位置、方式、時間等方面的關系。例如，當我們需要表達“在旁邊”時，就可以使用 by 這個介詞，比如“我在桌子旁邊吃飯”。此外，by chance 表示“偶然”，它常常用于表示事情的發生是出乎意料的。例如，“他偶然遇到了他的老朋友”這句話就可以用 by chance 來表達。總之，by 這個介詞在英語中應用廣泛，是學習英語時需要掌握的重要詞匯之一。

短語：

1. depend on 取決于

2. depend on sb for sth 依靠某人

3. depend on sth (to do sth) 取決于某事

4. be dependent on sb 依賴某人

5. be dependent on sth 依賴某物

6. be dependent on (doing) sth 依賴于(做)某事

7. be dependent on sb/sth for sth 對某人/某物有依賴

例句：

1. I will do what I can to ensure that my future is dependent on me, not on others.

2. She is completely dependent on her parents for everything.

3. The success of our project depends on the weather.

4. We are dependent on the government for funding.

5. The company is dependent on its sales to stay afloat.

6. The success of this project depends on our ability to work together as a team.

7. We need to ensure that we are not dependent on one person for everything.

英文小作文：

Success is not solely dependent on our own efforts, but also on the support of others. We need to be able to rely on the people around us to help us achieve our goals, but we also need to be able to support them in return. When we are dependent on others for everything, it can be difficult to maintain our own independence and self-confidence, but it can also be a valuable experience that teaches us to rely on ourselves more than we ever thought possible. In the end, success is about balance and cooperation, and it is only through working together that we can achieve our goals and dreams.