by itself音標為["ba? ?z ?self]，基本翻譯為“本身；自動地；自行”，速記技巧為“by+反身代詞=by itself”。

by itself 的英文詞源是 by + itself，表示“獨自地，自動地”。其變化形式有：

- itself：反身代詞，表示“它自己，自己本身”，用于加強或突出自己或另一個人或物的語氣。

- by oneself：表示“獨自地，單獨地”，強調動作的獨立完成和獨自完成的過程。

相關單詞有：

- independent：獨立的，自主的，表示不依賴于他人或團體而存在或行動。

- isolation：孤立，隔離，表示與外界隔絕或被排斥在外。

- autonomy：自治，自主權，表示擁有自主權或獨立性的狀態。

- self-reliance：自力更生，自助，表示依靠自己的力量和能力解決問題。

- loner：獨行者，獨居者，表示獨自行動或生活的人。

- solo：獨奏，獨唱，表示獨自表演或演奏的場合。

- singleton：獨身者，單身者，表示獨自生活或沒有伴侶的人。

- solitude：孤獨，獨處，表示獨自一人或與外界隔絕的狀態。

- self-centered：以自我為中心的，表示過分關注自己的利益和需求。

- self-esteem：自尊心，自信，表示對自己價值和能力的自我評價和認可。

常用短語：

1. by chance

2. by oneself

3. by accident

4. by choice

5. by turns

6. by means of

7. by implication

例句：

1. I met my friend by chance on the street.

2. She did it all by herself without any help.

3. Accidentally, I found the lost key.

4. We chose our activities by choice from a variety of options.

5. They switched positions by turns.

6. She used to read books by means of an e-reader.

7. The implication here is that we should be responsible for our own actions.

英文小作文：

Self-reliance is Important

In today"s society, we live in a world where we rely on many things to get by, from technology to social media to other people. However, there is one thing that we cannot rely on for success or happiness, and that is other people. Instead, we must rely on ourselves to get through life"s challenges and accomplish our goals.

By itself, self-reliance is not enough, but it is a fundamental building block of success and happiness. It requires us to be responsible for our own actions, to make decisions and take responsibility for our own outcomes. It means being able to handle challenges and adversity on our own, without relying on others to bail us out or rescue us.

In this way, self-reliance is a powerful tool that can help us achieve our goals and live fulfilling lives. It teaches us to be independent, confident and resourceful, and it helps us to develop resilience and perseverance in the face of setbacks and difficulties. By relying on ourselves, we can achieve anything we set our minds to.