fell down的音標是[fe?ld dow?n]，基本翻譯是“跌倒；落下；砍倒”，速記技巧是：f（副詞標志）e（發e的音）ll（弱讀）d（動詞詞尾）。

fell down的英文詞源為：

fell：來自中古英語 fele，意為“落下，跌倒”。

down：來自古英語 dūn，意為“向下”。

fell down的變化形式有：

fell：原形，作為動詞使用。

fallen：fell的過去式和過去分詞，作為形容詞使用，表示“跌倒的，墜落的”。

相關單詞有：

1. trip and fall：絆倒和跌倒，表示因不小心而跌倒。

2. stumble down：跌跌撞撞地走下來，表示走不穩或跌跌撞撞的樣子。

3. fall off：從…上跌落，表示物體或數量減少或下降。

4. plunge down：猛烈地落下，表示突然或猛烈地跌倒或墜落。

5. collapse down：倒塌下來，表示建筑物、物體等倒塌或崩潰。

6. sink down：沉下去，表示逐漸陷入或消失。

7. drop down：落下，掉下，表示物體從高處落下。

8. slide down：滑下來，表示沿著斜面或坡道向下移動。

9. fall prey to：成為…的犧牲品，表示因某種原因而受害或失敗。

10. fall ill/sick：生病，表示身體不適或生病的狀態。

fell down在英文中有跌倒、墜落之意，常用于描述物體或人的運動狀態。同時，它也有失敗、垮臺之意，常用于描述某種情況或趨勢的發展。

常用短語：

1. fall down in tears

2. fall down on one"s face

3. fall flat

4. fall off

5. fall behind

6. fall out

7. fall into pieces

例句：

1. She fell down in tears when she failed the exam.

2. He fell flat on his face when he tried to climb the mountain.

3. The painting fell off the wall when the wind blew.

4. I fell behind in my studies and couldn"t catch up.

5. They fell out with each other and haven"t spoken since.

6. His nerves fell into pieces when he heard the news.

7. The building fell into ruins after the earthquake.

英文小作文：

標題：The Impact of Failure

Failure is a part of life, and it can be a very painful experience. However, it can also be a valuable lesson that teaches us valuable life lessons. When we fall down, we learn to pick ourselves up and move forward, stronger and wiser.

Sometimes, we may feel like giving up when things don"t go our way, but we must remember that failure is not the end of the world. It"s a chance to learn from our mistakes and become better people in the long run.

On the other hand, failure can also bring us closer to our goals if we learn from it and use it as motivation to keep pushing forward. It"s a reminder that we need to work harder and be more determined to achieve our dreams.

In conclusion, failure is a part of life that we cannot avoid, but it doesn"t have to define us. We can use it as an opportunity to grow and become stronger individuals who are ready to face any challenge that comes our way.