gnawed的音標為[n??d]，基本翻譯為“咬碎；啃；嚼”，速記技巧為：gnawed=n（牛）+ow（像貓）+d（吃）。

“gnawed”這個詞源可以追溯到古英語“nāwan”，意為“咬，啃”。它的詞形變化主要包括加前綴或后綴，如“gnawing”（啃食的）和“gnawed-ness”（啃食的本質）。

相關單詞：

1. “gnaw” - 基本詞義為“啃，咬”，可以引申為“折磨，焦慮”等含義，例如：“He was gnawed by guilt over his mistake.”（他因自己的錯誤而備受內心的折磨）。

2. “gnawing” - 加前綴“gn-”構成，意為“啃食的，持續不斷的”，例如：“There was a gnawing feeling of unease in his stomach.”（他胃里有一種持續不斷的焦慮感）。

3. “gnawed-ness” - 加后綴“-ness”構成，意為“啃食的本質”，例如：“The gnawed-ness of hunger was evident in his face.”（饑餓的啃食本質在他的臉上顯露無遺）。

至于變化形式和相關單詞的描述，可以參考以下內容：

“gnawed”作為動詞形式，可以表示啃食、咬的動作，還可以表示持續不斷的焦慮、擔憂等情緒。例如：“The children were gnawing at their nails with worry.”（孩子們因為擔憂而焦慮不安）。

相關單詞“gnawing”和“gnawed-ness”在句子中可以充當形容詞或名詞，表達不同的含義。例如，“The gnawing feeling of insecurity persisted throughout the night.”（那種持續不斷的無安全感的感覺整夜都在折磨著他）。

總之，“gnawed”這個詞源豐富，含義廣泛，可以表達多種不同的意思，并且在句子中可以充當不同的詞性，具有很高的使用價值。

常用短語：

1. gnaw at

2. gnaw one"s nails

3. gnaw one"s brain

4. gnaw one"s heart

5. gnaw one"s conscience

6. gnaw one"s guts

7. gnaw one"s thoughts

例句：

1. She was gnawing at her nails, trying to relieve her nervousness.

2. He couldn"t stop gnawing his brain over what he had done.

3. I can"t seem to gnaw my heart over what I should have done.

4. She was feeling guilty and couldn"t stop gnawing her conscience.

5. The tension was gnawing at my guts, making me feel sick.

6. I can"t seem to gnaw my thoughts into any sense of direction.

英文小作文：

My biggest fear is that I will be stuck in a situation where I am unable to make a decision, and I am constantly gnawing at my thoughts, trying to find a solution that will satisfy me. However, I know that this is a futile effort, as it is only through facing my fears and making the right decision that I will be able to move forward and achieve my goals. Therefore, I must learn to stop gnawing at my thoughts and face the challenges that lie ahead of me with courage and determination.